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<div class="title">DetectionPostProcess.cpp</div> </div>
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<a href="_detection_post_process_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">//</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">// Copyright © 2017 Arm Ltd. All rights reserved.</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">// SPDX-License-Identifier: MIT</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">//</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span>  </div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="preprocessor">#include "<a class="code" href="_detection_post_process_8hpp.html">DetectionPostProcess.hpp</a>"</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span>  </div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="preprocessor">#include <<a class="code" href="_assert_8hpp.html">armnn/utility/Assert.hpp</a>></span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="preprocessor">#include <<a class="code" href="_ignore_unused_8hpp.html">armnn/utility/IgnoreUnused.hpp</a>></span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="preprocessor">#include <<a class="code" href="_numeric_cast_8hpp.html">armnn/utility/NumericCast.hpp</a>></span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>  </div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor">#include <algorithm></span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor">#include <numeric></span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>  </div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="keyword">namespace </span><a class="code" href="namespacearmnn.html">armnn</a></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> {</div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>  </div>
<div class="line"><a name="l00018"></a><span class="lineno"><a class="line" href="namespacearmnn.html#ae8ed5c640761fb6744aec0ee16388417"> 18</a></span> std::vector<unsigned int> <a class="code" href="namespacearmnn.html#ae8ed5c640761fb6744aec0ee16388417">GenerateRangeK</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> k)</div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> {</div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>  std::vector<unsigned int> range(k);</div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>  std::iota(range.begin(), range.end(), 0);</div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>  <span class="keywordflow">return</span> range;</div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> }</div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>  </div>
<div class="line"><a name="l00025"></a><span class="lineno"><a class="line" href="namespacearmnn.html#a2748f45e58b1c612d473043f711d1434"> 25</a></span> <span class="keywordtype">void</span> <a class="code" href="namespacearmnn.html#a2748f45e58b1c612d473043f711d1434">TopKSort</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> k, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span>* indices, <span class="keyword">const</span> <span class="keywordtype">float</span>* values, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> numElement)</div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> {</div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  std::partial_sort(indices, indices + k, indices + numElement,</div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  [&values](<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i, <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> j) { <span class="keywordflow">return</span> values[i] > values[j]; });</div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> }</div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  </div>
<div class="line"><a name="l00031"></a><span class="lineno"><a class="line" href="namespacearmnn.html#abf6aad7bc221f8ad22b4d99cd020373b"> 31</a></span> <span class="keywordtype">float</span> <a class="code" href="namespacearmnn.html#abf6aad7bc221f8ad22b4d99cd020373b">IntersectionOverUnion</a>(<span class="keyword">const</span> <span class="keywordtype">float</span>* boxI, <span class="keyword">const</span> <span class="keywordtype">float</span>* boxJ)</div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> {</div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  <span class="comment">// Box-corner format: ymin, xmin, ymax, xmax.</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> yMin = 0;</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> xMin = 1;</div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> yMax = 2;</div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> xMax = 3;</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  <span class="keywordtype">float</span> areaI = (boxI[yMax] - boxI[yMin]) * (boxI[xMax] - boxI[xMin]);</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  <span class="keywordtype">float</span> areaJ = (boxJ[yMax] - boxJ[yMin]) * (boxJ[xMax] - boxJ[xMin]);</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <span class="keywordtype">float</span> yMinIntersection = std::max(boxI[yMin], boxJ[yMin]);</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  <span class="keywordtype">float</span> xMinIntersection = std::max(boxI[xMin], boxJ[xMin]);</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="keywordtype">float</span> yMaxIntersection = std::min(boxI[yMax], boxJ[yMax]);</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="keywordtype">float</span> xMaxIntersection = std::min(boxI[xMax], boxJ[xMax]);</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  <span class="keywordtype">float</span> areaIntersection = std::max(yMaxIntersection - yMinIntersection, 0.0f) *</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  std::max(xMaxIntersection - xMinIntersection, 0.0f);</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="keywordtype">float</span> areaUnion = areaI + areaJ - areaIntersection;</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <span class="keywordflow">return</span> areaIntersection / areaUnion;</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> }</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  </div>
<div class="line"><a name="l00050"></a><span class="lineno"><a class="line" href="namespacearmnn.html#ac8c641d4a69c9a85c487cfbc7ea4d73c"> 50</a></span> std::vector<unsigned int> <a class="code" href="namespacearmnn.html#ac8c641d4a69c9a85c487cfbc7ea4d73c">NonMaxSuppression</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> numBoxes,</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keyword">const</span> std::vector<float>& boxCorners,</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="keyword">const</span> std::vector<float>& scores,</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="keywordtype">float</span> nmsScoreThreshold,</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> maxDetection,</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keywordtype">float</span> nmsIouThreshold)</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> {</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="comment">// Select boxes that have scores above a given threshold.</span></div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  std::vector<float> scoresAboveThreshold;</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  std::vector<unsigned int> indicesAboveThreshold;</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i = 0; i < numBoxes; ++i)</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  {</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="keywordflow">if</span> (scores[i] >= nmsScoreThreshold)</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  {</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  scoresAboveThreshold.push_back(scores[i]);</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  indicesAboveThreshold.push_back(i);</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  }</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  }</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  </div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="comment">// Sort the indices based on scores.</span></div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> numAboveThreshold = armnn::numeric_cast<unsigned int>(scoresAboveThreshold.size());</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  std::vector<unsigned int> sortedIndices = <a class="code" href="namespacearmnn.html#ae8ed5c640761fb6744aec0ee16388417">GenerateRangeK</a>(numAboveThreshold);</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <a class="code" href="namespacearmnn.html#a2748f45e58b1c612d473043f711d1434">TopKSort</a>(numAboveThreshold, sortedIndices.data(), scoresAboveThreshold.data(), numAboveThreshold);</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  </div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="comment">// Number of output cannot be more than max detections specified in the option.</span></div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> numOutput = std::min(maxDetection, numAboveThreshold);</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  std::vector<unsigned int> outputIndices;</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  std::vector<bool> visited(numAboveThreshold, <span class="keyword">false</span>);</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  </div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="comment">// Prune out the boxes with high intersection over union by keeping the box with higher score.</span></div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i = 0; i < numAboveThreshold; ++i)</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  {</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <span class="keywordflow">if</span> (outputIndices.size() >= numOutput)</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  {</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  }</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="keywordflow">if</span> (!visited[sortedIndices[i]])</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  {</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  outputIndices.push_back(indicesAboveThreshold[sortedIndices[i]]);</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> j = i + 1; j < numAboveThreshold; ++j)</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  {</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> iIndex = indicesAboveThreshold[sortedIndices[i]] * 4;</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> jIndex = indicesAboveThreshold[sortedIndices[j]] * 4;</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keywordflow">if</span> (<a class="code" href="namespacearmnn.html#abf6aad7bc221f8ad22b4d99cd020373b">IntersectionOverUnion</a>(&boxCorners[iIndex], &boxCorners[jIndex]) > nmsIouThreshold)</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  {</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  visited[sortedIndices[j]] = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  }</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  }</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  }</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  }</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <span class="keywordflow">return</span> outputIndices;</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span> }</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  </div>
<div class="line"><a name="l00103"></a><span class="lineno"><a class="line" href="namespacearmnn.html#ae8dcbb74cf0c855724f12833a55a5684"> 103</a></span> <span class="keywordtype">void</span> <a class="code" href="namespacearmnn.html#ae8dcbb74cf0c855724f12833a55a5684">AllocateOutputData</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> numOutput,</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> numSelected,</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <span class="keyword">const</span> std::vector<float>& boxCorners,</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <span class="keyword">const</span> std::vector<unsigned int>& outputIndices,</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <span class="keyword">const</span> std::vector<unsigned int>& selectedBoxes,</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="keyword">const</span> std::vector<unsigned int>& selectedClasses,</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <span class="keyword">const</span> std::vector<float>& selectedScores,</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <span class="keywordtype">float</span>* detectionBoxes,</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="keywordtype">float</span>* detectionScores,</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  <span class="keywordtype">float</span>* detectionClasses,</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="keywordtype">float</span>* numDetections)</div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span> {</div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i = 0; i < numOutput; ++i)</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  {</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> boxIndex = i * 4;</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="keywordflow">if</span> (i < numSelected)</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  {</div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> boxCornorIndex = selectedBoxes[outputIndices[i]] * 4;</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  detectionScores[i] = selectedScores[outputIndices[i]];</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  detectionClasses[i] = armnn::numeric_cast<float>(selectedClasses[outputIndices[i]]);</div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  detectionBoxes[boxIndex] = boxCorners[boxCornorIndex];</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  detectionBoxes[boxIndex + 1] = boxCorners[boxCornorIndex + 1];</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  detectionBoxes[boxIndex + 2] = boxCorners[boxCornorIndex + 2];</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  detectionBoxes[boxIndex + 3] = boxCorners[boxCornorIndex + 3];</div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  }</div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <span class="keywordflow">else</span></div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  {</div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  detectionScores[i] = 0.0f;</div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  detectionClasses[i] = 0.0f;</div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  detectionBoxes[boxIndex] = 0.0f;</div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  detectionBoxes[boxIndex + 1] = 0.0f;</div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  detectionBoxes[boxIndex + 2] = 0.0f;</div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  detectionBoxes[boxIndex + 3] = 0.0f;</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  }</div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  }</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  numDetections[0] = armnn::numeric_cast<float>(numSelected);</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span> }</div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  </div>
<div class="line"><a name="l00141"></a><span class="lineno"><a class="line" href="namespacearmnn.html#ae76ce23fa9fc18e56448d52b37dd3f32"> 141</a></span> <span class="keywordtype">void</span> <a class="code" href="namespacearmnn.html#ae76ce23fa9fc18e56448d52b37dd3f32">DetectionPostProcess</a>(<span class="keyword">const</span> <a class="code" href="classarmnn_1_1_tensor_info.html">TensorInfo</a>& boxEncodingsInfo,</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <span class="keyword">const</span> <a class="code" href="classarmnn_1_1_tensor_info.html">TensorInfo</a>& scoresInfo,</div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  <span class="keyword">const</span> <a class="code" href="classarmnn_1_1_tensor_info.html">TensorInfo</a>& anchorsInfo,</div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  <span class="keyword">const</span> <a class="code" href="classarmnn_1_1_tensor_info.html">TensorInfo</a>& detectionBoxesInfo,</div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  <span class="keyword">const</span> <a class="code" href="classarmnn_1_1_tensor_info.html">TensorInfo</a>& detectionClassesInfo,</div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  <span class="keyword">const</span> <a class="code" href="classarmnn_1_1_tensor_info.html">TensorInfo</a>& detectionScoresInfo,</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  <span class="keyword">const</span> <a class="code" href="classarmnn_1_1_tensor_info.html">TensorInfo</a>& numDetectionsInfo,</div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  <span class="keyword">const</span> <a class="code" href="structarmnn_1_1_detection_post_process_descriptor.html">DetectionPostProcessDescriptor</a>& desc,</div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  <a class="code" href="classarmnn_1_1_decoder.html">Decoder<float></a>& boxEncodings,</div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  <a class="code" href="classarmnn_1_1_decoder.html">Decoder<float></a>& scores,</div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  <a class="code" href="classarmnn_1_1_decoder.html">Decoder<float></a>& anchors,</div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  <span class="keywordtype">float</span>* detectionBoxes,</div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  <span class="keywordtype">float</span>* detectionClasses,</div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  <span class="keywordtype">float</span>* detectionScores,</div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  <span class="keywordtype">float</span>* numDetections)</div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span> {</div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  <a class="code" href="namespacearmnn.html#a44affeeb090c3c6a3062830562672e84">IgnoreUnused</a>(anchorsInfo, detectionClassesInfo, detectionScoresInfo, numDetectionsInfo);</div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  </div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  <span class="comment">// Transform center-size format which is (ycenter, xcenter, height, width) to box-corner format,</span></div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  <span class="comment">// which represents the lower left corner and the upper right corner (ymin, xmin, ymax, xmax)</span></div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  std::vector<float> boxCorners(boxEncodingsInfo.<a class="code" href="classarmnn_1_1_tensor_info.html#a8846406ac37fbd2204f0be16ee05d5b7">GetNumElements</a>());</div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  </div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> numBoxes = boxEncodingsInfo.<a class="code" href="classarmnn_1_1_tensor_info.html#a8b5d0f8a24e9d9238f412260a552acf8">GetShape</a>()[1];</div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  <span class="keyword">const</span> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> numScores = scoresInfo.<a class="code" href="classarmnn_1_1_tensor_info.html#a8846406ac37fbd2204f0be16ee05d5b7">GetNumElements</a>();</div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  </div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i = 0; i < numBoxes; ++i)</div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  {</div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  <span class="comment">// Y</span></div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  <span class="keywordtype">float</span> boxEncodingY = boxEncodings.<a class="code" href="classarmnn_1_1_decoder.html#ac729108381e2340bea12877971713ecb">Get</a>();</div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  <span class="keywordtype">float</span> anchorY = anchors.<a class="code" href="classarmnn_1_1_decoder.html#ac729108381e2340bea12877971713ecb">Get</a>();</div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  </div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  ++boxEncodings;</div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  ++anchors;</div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  </div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  <span class="comment">// X</span></div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  <span class="keywordtype">float</span> boxEncodingX = boxEncodings.<a class="code" href="classarmnn_1_1_decoder.html#ac729108381e2340bea12877971713ecb">Get</a>();</div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  <span class="keywordtype">float</span> anchorX = anchors.<a class="code" href="classarmnn_1_1_decoder.html#ac729108381e2340bea12877971713ecb">Get</a>();</div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  </div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  ++boxEncodings;</div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  ++anchors;</div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  </div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  <span class="comment">// H</span></div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  <span class="keywordtype">float</span> boxEncodingH = boxEncodings.<a class="code" href="classarmnn_1_1_decoder.html#ac729108381e2340bea12877971713ecb">Get</a>();</div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  <span class="keywordtype">float</span> anchorH = anchors.<a class="code" href="classarmnn_1_1_decoder.html#ac729108381e2340bea12877971713ecb">Get</a>();</div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  </div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  ++boxEncodings;</div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  ++anchors;</div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  </div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  <span class="comment">// W</span></div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  <span class="keywordtype">float</span> boxEncodingW = boxEncodings.<a class="code" href="classarmnn_1_1_decoder.html#ac729108381e2340bea12877971713ecb">Get</a>();</div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  <span class="keywordtype">float</span> anchorW = anchors.<a class="code" href="classarmnn_1_1_decoder.html#ac729108381e2340bea12877971713ecb">Get</a>();</div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  </div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  ++boxEncodings;</div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  ++anchors;</div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  </div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  <span class="keywordtype">float</span> yCentre = boxEncodingY / desc.<a class="code" href="structarmnn_1_1_detection_post_process_descriptor.html#a7a2156ec7d9c012ce00bbcc6afcb9028">m_ScaleY</a> * anchorH + anchorY;</div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  <span class="keywordtype">float</span> xCentre = boxEncodingX / desc.<a class="code" href="structarmnn_1_1_detection_post_process_descriptor.html#ae64523937ea910030ad66fee6fddd51f">m_ScaleX</a> * anchorW + anchorX;</div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  </div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  <span class="keywordtype">float</span> halfH = 0.5f * expf(boxEncodingH / desc.<a class="code" href="structarmnn_1_1_detection_post_process_descriptor.html#aa61510cbd529870182e918ac6e8b9d72">m_ScaleH</a>) * anchorH;</div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  <span class="keywordtype">float</span> halfW = 0.5f * expf(boxEncodingW / desc.<a class="code" href="structarmnn_1_1_detection_post_process_descriptor.html#ab509802c659de19929f18bad14a35c58">m_ScaleW</a>) * anchorW;</div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  </div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> indexY = i * 4;</div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> indexX = indexY + 1;</div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> indexH = indexX + 1;</div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> indexW = indexH + 1;</div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  </div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  <span class="comment">// ymin</span></div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  boxCorners[indexY] = yCentre - halfH;</div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  <span class="comment">// xmin</span></div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  boxCorners[indexX] = xCentre - halfW;</div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  <span class="comment">// ymax</span></div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  boxCorners[indexH] = yCentre + halfH;</div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  <span class="comment">// xmax</span></div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  boxCorners[indexW] = xCentre + halfW;</div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  </div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  <a class="code" href="_assert_8hpp.html#a5698be69cbd5dfe6c28fcd9867e8cbed">ARMNN_ASSERT</a>(boxCorners[indexY] < boxCorners[indexH]);</div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  <a class="code" href="_assert_8hpp.html#a5698be69cbd5dfe6c28fcd9867e8cbed">ARMNN_ASSERT</a>(boxCorners[indexX] < boxCorners[indexW]);</div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  }</div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  </div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> numClassesWithBg = desc.<a class="code" href="structarmnn_1_1_detection_post_process_descriptor.html#a3a04b0ccee4bb2f21721ee5045e83df4">m_NumClasses</a> + 1;</div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  </div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  <span class="comment">// Decode scores</span></div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  std::vector<float> decodedScores;</div>
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  decodedScores.reserve(numScores);</div>
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  </div>
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i = 0u; i < numScores; ++i)</div>
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  {</div>
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  decodedScores.emplace_back(scores.<a class="code" href="classarmnn_1_1_decoder.html#ac729108381e2340bea12877971713ecb">Get</a>());</div>
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  ++scores;</div>
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  }</div>
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  </div>
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  <span class="comment">// Perform Non Max Suppression.</span></div>
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  <span class="keywordflow">if</span> (desc.<a class="code" href="structarmnn_1_1_detection_post_process_descriptor.html#a7ed9bc7c26df67d274d5dd4cd83adf0f">m_UseRegularNms</a>)</div>
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  {</div>
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  <span class="comment">// Perform Regular NMS.</span></div>
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  <span class="comment">// For each class, perform NMS and select max detection numbers of the highest score across all classes.</span></div>
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  std::vector<float> classScores(numBoxes);</div>
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  </div>
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  std::vector<unsigned int> selectedBoxesAfterNms;</div>
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  selectedBoxesAfterNms.reserve(numBoxes);</div>
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  </div>
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  std::vector<float> selectedScoresAfterNms;</div>
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  selectedBoxesAfterNms.reserve(numScores);</div>
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  </div>
<div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  std::vector<unsigned int> selectedClasses;</div>
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  </div>
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> c = 0; c < desc.<a class="code" href="structarmnn_1_1_detection_post_process_descriptor.html#a3a04b0ccee4bb2f21721ee5045e83df4">m_NumClasses</a>; ++c)</div>
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  {</div>
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  <span class="comment">// For each boxes, get scores of the boxes for the class c.</span></div>
<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i = 0; i < numBoxes; ++i)</div>
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  {</div>
<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  classScores[i] = decodedScores[i * numClassesWithBg + c + 1];</div>
<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  }</div>
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  std::vector<unsigned int> selectedIndices = <a class="code" href="namespacearmnn.html#ac8c641d4a69c9a85c487cfbc7ea4d73c">NonMaxSuppression</a>(numBoxes,</div>
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  boxCorners,</div>
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  classScores,</div>
<div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  desc.<a class="code" href="structarmnn_1_1_detection_post_process_descriptor.html#a4392dd6b4862cc9cf95ae8f1001ba592">m_NmsScoreThreshold</a>,</div>
<div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  desc.<a class="code" href="structarmnn_1_1_detection_post_process_descriptor.html#a7e2f87544b8bc7e497e1dec8d3ca4055">m_DetectionsPerClass</a>,</div>
<div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  desc.<a class="code" href="structarmnn_1_1_detection_post_process_descriptor.html#a53c8a7f33a40e1e240256bcfcf41b101">m_NmsIouThreshold</a>);</div>
<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  </div>
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i = 0; i < selectedIndices.size(); ++i)</div>
<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  {</div>
<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  selectedBoxesAfterNms.push_back(selectedIndices[i]);</div>
<div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  selectedScoresAfterNms.push_back(classScores[selectedIndices[i]]);</div>
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  selectedClasses.push_back(c);</div>
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  }</div>
<div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  }</div>
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  </div>
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  <span class="comment">// Select max detection numbers of the highest score across all classes</span></div>
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> numSelected = armnn::numeric_cast<unsigned int>(selectedBoxesAfterNms.size());</div>
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> numOutput = std::min(desc.<a class="code" href="structarmnn_1_1_detection_post_process_descriptor.html#ae72089bcab60ac175557f4241b16a014">m_MaxDetections</a>, numSelected);</div>
<div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  </div>
<div class="line"><a name="l00273"></a><span class="lineno"> 273</span>  <span class="comment">// Sort the max scores among the selected indices.</span></div>
<div class="line"><a name="l00274"></a><span class="lineno"> 274</span>  std::vector<unsigned int> outputIndices = <a class="code" href="namespacearmnn.html#ae8ed5c640761fb6744aec0ee16388417">GenerateRangeK</a>(numSelected);</div>
<div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  <a class="code" href="namespacearmnn.html#a2748f45e58b1c612d473043f711d1434">TopKSort</a>(numOutput, outputIndices.data(), selectedScoresAfterNms.data(), numSelected);</div>
<div class="line"><a name="l00276"></a><span class="lineno"> 276</span>  </div>
<div class="line"><a name="l00277"></a><span class="lineno"> 277</span>  <a class="code" href="namespacearmnn.html#ae8dcbb74cf0c855724f12833a55a5684">AllocateOutputData</a>(detectionBoxesInfo.<a class="code" href="classarmnn_1_1_tensor_info.html#a8b5d0f8a24e9d9238f412260a552acf8">GetShape</a>()[1], numOutput, boxCorners, outputIndices,</div>
<div class="line"><a name="l00278"></a><span class="lineno"> 278</span>  selectedBoxesAfterNms, selectedClasses, selectedScoresAfterNms,</div>
<div class="line"><a name="l00279"></a><span class="lineno"> 279</span>  detectionBoxes, detectionScores, detectionClasses, numDetections);</div>
<div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  }</div>
<div class="line"><a name="l00281"></a><span class="lineno"> 281</span>  <span class="keywordflow">else</span></div>
<div class="line"><a name="l00282"></a><span class="lineno"> 282</span>  {</div>
<div class="line"><a name="l00283"></a><span class="lineno"> 283</span>  <span class="comment">// Perform Fast NMS.</span></div>
<div class="line"><a name="l00284"></a><span class="lineno"> 284</span>  <span class="comment">// Select max scores of boxes and perform NMS on max scores,</span></div>
<div class="line"><a name="l00285"></a><span class="lineno"> 285</span>  <span class="comment">// select max detection numbers of the highest score</span></div>
<div class="line"><a name="l00286"></a><span class="lineno"> 286</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> numClassesPerBox = std::min(desc.<a class="code" href="structarmnn_1_1_detection_post_process_descriptor.html#a9ae2c9796692ebeafe19a4d3f09c8ea8">m_MaxClassesPerDetection</a>, desc.<a class="code" href="structarmnn_1_1_detection_post_process_descriptor.html#a3a04b0ccee4bb2f21721ee5045e83df4">m_NumClasses</a>);</div>
<div class="line"><a name="l00287"></a><span class="lineno"> 287</span>  std::vector<float> maxScores;</div>
<div class="line"><a name="l00288"></a><span class="lineno"> 288</span>  std::vector<unsigned int>boxIndices;</div>
<div class="line"><a name="l00289"></a><span class="lineno"> 289</span>  std::vector<unsigned int>maxScoreClasses;</div>
<div class="line"><a name="l00290"></a><span class="lineno"> 290</span>  </div>
<div class="line"><a name="l00291"></a><span class="lineno"> 291</span>  <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> box = 0; box < numBoxes; ++box)</div>
<div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  {</div>
<div class="line"><a name="l00293"></a><span class="lineno"> 293</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> scoreIndex = box * numClassesWithBg + 1;</div>
<div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  </div>
<div class="line"><a name="l00295"></a><span class="lineno"> 295</span>  <span class="comment">// Get the max scores of the box.</span></div>
<div class="line"><a name="l00296"></a><span class="lineno"> 296</span>  std::vector<unsigned int> maxScoreIndices = <a class="code" href="namespacearmnn.html#ae8ed5c640761fb6744aec0ee16388417">GenerateRangeK</a>(desc.<a class="code" href="structarmnn_1_1_detection_post_process_descriptor.html#a3a04b0ccee4bb2f21721ee5045e83df4">m_NumClasses</a>);</div>
<div class="line"><a name="l00297"></a><span class="lineno"> 297</span>  <a class="code" href="namespacearmnn.html#a2748f45e58b1c612d473043f711d1434">TopKSort</a>(numClassesPerBox, maxScoreIndices.data(),</div>
<div class="line"><a name="l00298"></a><span class="lineno"> 298</span>  decodedScores.data() + scoreIndex, desc.<a class="code" href="structarmnn_1_1_detection_post_process_descriptor.html#a3a04b0ccee4bb2f21721ee5045e83df4">m_NumClasses</a>);</div>
<div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  </div>
<div class="line"><a name="l00300"></a><span class="lineno"> 300</span>  <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i = 0; i < numClassesPerBox; ++i)</div>
<div class="line"><a name="l00301"></a><span class="lineno"> 301</span>  {</div>
<div class="line"><a name="l00302"></a><span class="lineno"> 302</span>  maxScores.push_back(decodedScores[scoreIndex + maxScoreIndices[i]]);</div>
<div class="line"><a name="l00303"></a><span class="lineno"> 303</span>  maxScoreClasses.push_back(maxScoreIndices[i]);</div>
<div class="line"><a name="l00304"></a><span class="lineno"> 304</span>  boxIndices.push_back(box);</div>
<div class="line"><a name="l00305"></a><span class="lineno"> 305</span>  }</div>
<div class="line"><a name="l00306"></a><span class="lineno"> 306</span>  }</div>
<div class="line"><a name="l00307"></a><span class="lineno"> 307</span>  </div>
<div class="line"><a name="l00308"></a><span class="lineno"> 308</span>  <span class="comment">// Perform NMS on max scores</span></div>
<div class="line"><a name="l00309"></a><span class="lineno"> 309</span>  std::vector<unsigned int> selectedIndices = <a class="code" href="namespacearmnn.html#ac8c641d4a69c9a85c487cfbc7ea4d73c">NonMaxSuppression</a>(numBoxes, boxCorners, maxScores,</div>
<div class="line"><a name="l00310"></a><span class="lineno"> 310</span>  desc.<a class="code" href="structarmnn_1_1_detection_post_process_descriptor.html#a4392dd6b4862cc9cf95ae8f1001ba592">m_NmsScoreThreshold</a>,</div>
<div class="line"><a name="l00311"></a><span class="lineno"> 311</span>  desc.<a class="code" href="structarmnn_1_1_detection_post_process_descriptor.html#ae72089bcab60ac175557f4241b16a014">m_MaxDetections</a>,</div>
<div class="line"><a name="l00312"></a><span class="lineno"> 312</span>  desc.<a class="code" href="structarmnn_1_1_detection_post_process_descriptor.html#a53c8a7f33a40e1e240256bcfcf41b101">m_NmsIouThreshold</a>);</div>
<div class="line"><a name="l00313"></a><span class="lineno"> 313</span>  </div>
<div class="line"><a name="l00314"></a><span class="lineno"> 314</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> numSelected = armnn::numeric_cast<unsigned int>(selectedIndices.size());</div>
<div class="line"><a name="l00315"></a><span class="lineno"> 315</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> numOutput = std::min(desc.<a class="code" href="structarmnn_1_1_detection_post_process_descriptor.html#ae72089bcab60ac175557f4241b16a014">m_MaxDetections</a>, numSelected);</div>
<div class="line"><a name="l00316"></a><span class="lineno"> 316</span>  </div>
<div class="line"><a name="l00317"></a><span class="lineno"> 317</span>  <a class="code" href="namespacearmnn.html#ae8dcbb74cf0c855724f12833a55a5684">AllocateOutputData</a>(detectionBoxesInfo.<a class="code" href="classarmnn_1_1_tensor_info.html#a8b5d0f8a24e9d9238f412260a552acf8">GetShape</a>()[1], numOutput, boxCorners, selectedIndices,</div>
<div class="line"><a name="l00318"></a><span class="lineno"> 318</span>  boxIndices, maxScoreClasses, maxScores,</div>
<div class="line"><a name="l00319"></a><span class="lineno"> 319</span>  detectionBoxes, detectionScores, detectionClasses, numDetections);</div>
<div class="line"><a name="l00320"></a><span class="lineno"> 320</span>  }</div>
<div class="line"><a name="l00321"></a><span class="lineno"> 321</span> }</div>
<div class="line"><a name="l00322"></a><span class="lineno"> 322</span>  </div>
<div class="line"><a name="l00323"></a><span class="lineno"> 323</span> } <span class="comment">// namespace armnn</span></div>
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<div class="ttc" id="a_assert_8hpp_html_a5698be69cbd5dfe6c28fcd9867e8cbed"><div class="ttname"><a href="_assert_8hpp.html#a5698be69cbd5dfe6c28fcd9867e8cbed">ARMNN_ASSERT</a></div><div class="ttdeci">#define ARMNN_ASSERT(COND)</div><div class="ttdef"><b>Definition:</b> <a href="_assert_8hpp_source.html#l00014">Assert.hpp:14</a></div></div>
<div class="ttc" id="aclassarmnn_1_1_decoder_html"><div class="ttname"><a href="classarmnn_1_1_decoder.html">armnn::Decoder< float ></a></div></div>
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<div class="ttc" id="anamespacearmnn_html_ae8ed5c640761fb6744aec0ee16388417"><div class="ttname"><a href="namespacearmnn.html#ae8ed5c640761fb6744aec0ee16388417">armnn::GenerateRangeK</a></div><div class="ttdeci">std::vector< unsigned int > GenerateRangeK(unsigned int k)</div><div class="ttdef"><b>Definition:</b> <a href="_detection_post_process_8cpp_source.html#l00018">DetectionPostProcess.cpp:18</a></div></div>
<div class="ttc" id="astructarmnn_1_1_detection_post_process_descriptor_html_a4392dd6b4862cc9cf95ae8f1001ba592"><div class="ttname"><a href="structarmnn_1_1_detection_post_process_descriptor.html#a4392dd6b4862cc9cf95ae8f1001ba592">armnn::DetectionPostProcessDescriptor::m_NmsScoreThreshold</a></div><div class="ttdeci">float m_NmsScoreThreshold</div><div class="ttdoc">NMS score threshold.</div><div class="ttdef"><b>Definition:</b> <a href="_descriptors_8hpp_source.html#l00751">Descriptors.hpp:751</a></div></div>
<div class="ttc" id="astructarmnn_1_1_detection_post_process_descriptor_html_ae64523937ea910030ad66fee6fddd51f"><div class="ttname"><a href="structarmnn_1_1_detection_post_process_descriptor.html#ae64523937ea910030ad66fee6fddd51f">armnn::DetectionPostProcessDescriptor::m_ScaleX</a></div><div class="ttdeci">float m_ScaleX</div><div class="ttdoc">Center size encoding scale x.</div><div class="ttdef"><b>Definition:</b> <a href="_descriptors_8hpp_source.html#l00759">Descriptors.hpp:759</a></div></div>
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<div class="ttc" id="astructarmnn_1_1_detection_post_process_descriptor_html_ae72089bcab60ac175557f4241b16a014"><div class="ttname"><a href="structarmnn_1_1_detection_post_process_descriptor.html#ae72089bcab60ac175557f4241b16a014">armnn::DetectionPostProcessDescriptor::m_MaxDetections</a></div><div class="ttdeci">uint32_t m_MaxDetections</div><div class="ttdoc">Maximum numbers of detections.</div><div class="ttdef"><b>Definition:</b> <a href="_descriptors_8hpp_source.html#l00745">Descriptors.hpp:745</a></div></div>
<div class="ttc" id="aclassarmnn_1_1_tensor_info_html"><div class="ttname"><a href="classarmnn_1_1_tensor_info.html">armnn::TensorInfo</a></div><div class="ttdef"><b>Definition:</b> <a href="_tensor_8hpp_source.html#l00152">Tensor.hpp:152</a></div></div>
<div class="ttc" id="anamespacearmnn_html_ae8dcbb74cf0c855724f12833a55a5684"><div class="ttname"><a href="namespacearmnn.html#ae8dcbb74cf0c855724f12833a55a5684">armnn::AllocateOutputData</a></div><div class="ttdeci">void AllocateOutputData(unsigned int numOutput, unsigned int numSelected, const std::vector< float > &boxCorners, const std::vector< unsigned int > &outputIndices, const std::vector< unsigned int > &selectedBoxes, const std::vector< unsigned int > &selectedClasses, const std::vector< float > &selectedScores, float *detectionBoxes, float *detectionScores, float *detectionClasses, float *numDetections)</div><div class="ttdef"><b>Definition:</b> <a href="_detection_post_process_8cpp_source.html#l00103">DetectionPostProcess.cpp:103</a></div></div>
<div class="ttc" id="astructarmnn_1_1_detection_post_process_descriptor_html_ab509802c659de19929f18bad14a35c58"><div class="ttname"><a href="structarmnn_1_1_detection_post_process_descriptor.html#ab509802c659de19929f18bad14a35c58">armnn::DetectionPostProcessDescriptor::m_ScaleW</a></div><div class="ttdeci">float m_ScaleW</div><div class="ttdoc">Center size encoding scale weight.</div><div class="ttdef"><b>Definition:</b> <a href="_descriptors_8hpp_source.html#l00763">Descriptors.hpp:763</a></div></div>
<div class="ttc" id="a_ignore_unused_8hpp_html"><div class="ttname"><a href="_ignore_unused_8hpp.html">IgnoreUnused.hpp</a></div></div>
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<div class="ttc" id="a_numeric_cast_8hpp_html"><div class="ttname"><a href="_numeric_cast_8hpp.html">NumericCast.hpp</a></div></div>
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<div class="ttc" id="astructarmnn_1_1_detection_post_process_descriptor_html_a3a04b0ccee4bb2f21721ee5045e83df4"><div class="ttname"><a href="structarmnn_1_1_detection_post_process_descriptor.html#a3a04b0ccee4bb2f21721ee5045e83df4">armnn::DetectionPostProcessDescriptor::m_NumClasses</a></div><div class="ttdeci">uint32_t m_NumClasses</div><div class="ttdoc">Number of classes.</div><div class="ttdef"><b>Definition:</b> <a href="_descriptors_8hpp_source.html#l00755">Descriptors.hpp:755</a></div></div>
<div class="ttc" id="astructarmnn_1_1_detection_post_process_descriptor_html_a53c8a7f33a40e1e240256bcfcf41b101"><div class="ttname"><a href="structarmnn_1_1_detection_post_process_descriptor.html#a53c8a7f33a40e1e240256bcfcf41b101">armnn::DetectionPostProcessDescriptor::m_NmsIouThreshold</a></div><div class="ttdeci">float m_NmsIouThreshold</div><div class="ttdoc">Intersection over union threshold.</div><div class="ttdef"><b>Definition:</b> <a href="_descriptors_8hpp_source.html#l00753">Descriptors.hpp:753</a></div></div>
<div class="ttc" id="anamespacearmnn_html_ae76ce23fa9fc18e56448d52b37dd3f32"><div class="ttname"><a href="namespacearmnn.html#ae76ce23fa9fc18e56448d52b37dd3f32">armnn::DetectionPostProcess</a></div><div class="ttdeci">void DetectionPostProcess(const TensorInfo &boxEncodingsInfo, const TensorInfo &scoresInfo, const TensorInfo &anchorsInfo, const TensorInfo &detectionBoxesInfo, const TensorInfo &detectionClassesInfo, const TensorInfo &detectionScoresInfo, const TensorInfo &numDetectionsInfo, const DetectionPostProcessDescriptor &desc, Decoder< float > &boxEncodings, Decoder< float > &scores, Decoder< float > &anchors, float *detectionBoxes, float *detectionClasses, float *detectionScores, float *numDetections)</div><div class="ttdef"><b>Definition:</b> <a href="_detection_post_process_8cpp_source.html#l00141">DetectionPostProcess.cpp:141</a></div></div>
<div class="ttc" id="astructarmnn_1_1_detection_post_process_descriptor_html_a7e2f87544b8bc7e497e1dec8d3ca4055"><div class="ttname"><a href="structarmnn_1_1_detection_post_process_descriptor.html#a7e2f87544b8bc7e497e1dec8d3ca4055">armnn::DetectionPostProcessDescriptor::m_DetectionsPerClass</a></div><div class="ttdeci">uint32_t m_DetectionsPerClass</div><div class="ttdoc">Detections per classes, used in Regular NMS.</div><div class="ttdef"><b>Definition:</b> <a href="_descriptors_8hpp_source.html#l00749">Descriptors.hpp:749</a></div></div>
<div class="ttc" id="astructarmnn_1_1_detection_post_process_descriptor_html_aa61510cbd529870182e918ac6e8b9d72"><div class="ttname"><a href="structarmnn_1_1_detection_post_process_descriptor.html#aa61510cbd529870182e918ac6e8b9d72">armnn::DetectionPostProcessDescriptor::m_ScaleH</a></div><div class="ttdeci">float m_ScaleH</div><div class="ttdoc">Center size encoding scale height.</div><div class="ttdef"><b>Definition:</b> <a href="_descriptors_8hpp_source.html#l00765">Descriptors.hpp:765</a></div></div>
<div class="ttc" id="aclassarmnn_1_1_decoder_html_ac729108381e2340bea12877971713ecb"><div class="ttname"><a href="classarmnn_1_1_decoder.html#ac729108381e2340bea12877971713ecb">armnn::Decoder::Get</a></div><div class="ttdeci">virtual IType Get() const =0</div></div>
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<div class="ttc" id="anamespacearmnn_html"><div class="ttname"><a href="namespacearmnn.html">armnn</a></div><div class="ttdoc">Copyright (c) 2021 ARM Limited and Contributors.</div><div class="ttdef"><b>Definition:</b> <a href="01__00__quick__start_8dox_source.html#l00006">01_00_quick_start.dox:6</a></div></div>
<div class="ttc" id="anamespacearmnn_html_a2748f45e58b1c612d473043f711d1434"><div class="ttname"><a href="namespacearmnn.html#a2748f45e58b1c612d473043f711d1434">armnn::TopKSort</a></div><div class="ttdeci">void TopKSort(unsigned int k, unsigned int *indices, const float *values, unsigned int numElement)</div><div class="ttdef"><b>Definition:</b> <a href="_detection_post_process_8cpp_source.html#l00025">DetectionPostProcess.cpp:25</a></div></div>
<div class="ttc" id="astructarmnn_1_1_detection_post_process_descriptor_html_a7ed9bc7c26df67d274d5dd4cd83adf0f"><div class="ttname"><a href="structarmnn_1_1_detection_post_process_descriptor.html#a7ed9bc7c26df67d274d5dd4cd83adf0f">armnn::DetectionPostProcessDescriptor::m_UseRegularNms</a></div><div class="ttdeci">bool m_UseRegularNms</div><div class="ttdoc">Use Regular NMS.</div><div class="ttdef"><b>Definition:</b> <a href="_descriptors_8hpp_source.html#l00757">Descriptors.hpp:757</a></div></div>
<div class="ttc" id="anamespacearmnn_html_ac8c641d4a69c9a85c487cfbc7ea4d73c"><div class="ttname"><a href="namespacearmnn.html#ac8c641d4a69c9a85c487cfbc7ea4d73c">armnn::NonMaxSuppression</a></div><div class="ttdeci">std::vector< unsigned int > NonMaxSuppression(unsigned int numBoxes, const std::vector< float > &boxCorners, const std::vector< float > &scores, float nmsScoreThreshold, unsigned int maxDetection, float nmsIouThreshold)</div><div class="ttdef"><b>Definition:</b> <a href="_detection_post_process_8cpp_source.html#l00050">DetectionPostProcess.cpp:50</a></div></div>
<div class="ttc" id="astructarmnn_1_1_detection_post_process_descriptor_html"><div class="ttname"><a href="structarmnn_1_1_detection_post_process_descriptor.html">armnn::DetectionPostProcessDescriptor</a></div><div class="ttdef"><b>Definition:</b> <a href="_descriptors_8hpp_source.html#l00713">Descriptors.hpp:713</a></div></div>
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