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Diffstat (limited to 'tests/validation/CPP/QuantizationLayer.cpp')
-rw-r--r-- | tests/validation/CPP/QuantizationLayer.cpp | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/tests/validation/CPP/QuantizationLayer.cpp b/tests/validation/CPP/QuantizationLayer.cpp new file mode 100644 index 0000000000..d61e75a3a9 --- /dev/null +++ b/tests/validation/CPP/QuantizationLayer.cpp @@ -0,0 +1,85 @@ +/* + * Copyright (c) 2017 ARM Limited. + * + * SPDX-License-Identifier: MIT + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to + * deal in the Software without restriction, including without limitation the + * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or + * sell copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in all + * copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ +#include "QuantizationLayer.h" + +namespace arm_compute +{ +namespace test +{ +namespace validation +{ +namespace reference +{ +void compute_min_max(const SimpleTensor<float> &src, float *min, float *max) +{ + // Set min and max to first pixel + float tmp_min = src[0]; + float tmp_max = src[0]; + + // Look for min and max values + for(int i = 1; i < src.num_elements(); ++i) + { + if(src[i] < tmp_min) + { + tmp_min = src[i]; + } + if(src[i] > tmp_max) + { + tmp_max = src[i]; + } + } + + *min = tmp_min; + *max = tmp_max; +} + +template <typename T, typename std::enable_if<is_floating_point<T>::value, int>::type> +SimpleTensor<uint8_t> quantization_layer(const SimpleTensor<T> &src) +{ + // Create reference + SimpleTensor<uint8_t> dst{ src.shape(), DataType::U8 }; + + // Compute min and max of the tensor using Min-Max layer + float min = 0.f; + float max = 0.f; + + compute_min_max(src, &min, &max); + + const float range = max - min; + + for(int i = 0; i < src.num_elements(); ++i) + { + // map values to range [0.0, 1.0] + const float normalized = (src[i] - min) / range; + dst[i] = static_cast<uint8_t>(std::min(255.0f, normalized * 256.0f)); + } + + return dst; +} + +template SimpleTensor<uint8_t> quantization_layer(const SimpleTensor<float> &src); +} // namespace reference +} // namespace validation +} // namespace test +} // namespace arm_compute |