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Diffstat (limited to 'source/application/main/ImageUtils.cc')
| -rw-r--r-- | source/application/main/ImageUtils.cc | 126 |
1 files changed, 0 insertions, 126 deletions
diff --git a/source/application/main/ImageUtils.cc b/source/application/main/ImageUtils.cc deleted file mode 100644 index 31b9493..0000000 --- a/source/application/main/ImageUtils.cc +++ /dev/null @@ -1,126 +0,0 @@ -/* - * Copyright (c) 2022 Arm Limited. All rights reserved. - * SPDX-License-Identifier: Apache-2.0 - * - * Licensed under the Apache License, Version 2.0 (the "License"); - * you may not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, - * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - */ -#include "ImageUtils.hpp" - -#include <limits> - -namespace arm { -namespace app { -namespace image { - - float Calculate1DOverlap(float x1Center, float width1, float x2Center, float width2) - { - float left_1 = x1Center - width1/2; - float left_2 = x2Center - width2/2; - float leftest = left_1 > left_2 ? left_1 : left_2; - - float right_1 = x1Center + width1/2; - float right_2 = x2Center + width2/2; - float rightest = right_1 < right_2 ? right_1 : right_2; - - return rightest - leftest; - } - - float CalculateBoxIntersect(Box& box1, Box& box2) - { - float width = Calculate1DOverlap(box1.x, box1.w, box2.x, box2.w); - if (width < 0) { - return 0; - } - float height = Calculate1DOverlap(box1.y, box1.h, box2.y, box2.h); - if (height < 0) { - return 0; - } - - float total_area = width*height; - return total_area; - } - - float CalculateBoxUnion(Box& box1, Box& box2) - { - float boxes_intersection = CalculateBoxIntersect(box1, box2); - float boxes_union = box1.w * box1.h + box2.w * box2.h - boxes_intersection; - return boxes_union; - } - - float CalculateBoxIOU(Box& box1, Box& box2) - { - float boxes_intersection = CalculateBoxIntersect(box1, box2); - if (boxes_intersection == 0) { - return 0; - } - - float boxes_union = CalculateBoxUnion(box1, box2); - if (boxes_union == 0) { - return 0; - } - - return boxes_intersection / boxes_union; - } - - void CalculateNMS(std::forward_list<Detection>& detections, int classes, float iouThreshold) - { - int idxClass{0}; - auto CompareProbs = [idxClass](Detection& prob1, Detection& prob2) { - return prob1.prob[idxClass] > prob2.prob[idxClass]; - }; - - for (idxClass = 0; idxClass < classes; ++idxClass) { - detections.sort(CompareProbs); - - for (auto it=detections.begin(); it != detections.end(); ++it) { - if (it->prob[idxClass] == 0) continue; - for (auto itc=std::next(it, 1); itc != detections.end(); ++itc) { - if (itc->prob[idxClass] == 0) { - continue; - } - if (CalculateBoxIOU(it->bbox, itc->bbox) > iouThreshold) { - itc->prob[idxClass] = 0; - } - } - } - } - } - - void ConvertImgToInt8(void* data, const size_t kMaxImageSize) - { - auto* tmp_req_data = static_cast<uint8_t*>(data); - auto* tmp_signed_req_data = static_cast<int8_t*>(data); - - for (size_t i = 0; i < kMaxImageSize; i++) { - tmp_signed_req_data[i] = (int8_t) ( - (int32_t) (tmp_req_data[i]) - 128); - } - } - - void RgbToGrayscale(const uint8_t* srcPtr, uint8_t* dstPtr, const size_t dstImgSz) - { - const float R = 0.299; - const float G = 0.587; - const float B = 0.114; - for (size_t i = 0; i < dstImgSz; ++i, srcPtr += 3) { - uint32_t int_gray = R * (*srcPtr) + - G * (*(srcPtr + 1)) + - B * (*(srcPtr + 2)); - *dstPtr++ = int_gray <= std::numeric_limits<uint8_t>::max() ? - int_gray : std::numeric_limits<uint8_t>::max(); - } - } - -} /* namespace image */ -} /* namespace app */ -} /* namespace arm */
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