| // |
| // Copyright © 2020 Arm Ltd and Contributors. All rights reserved. |
| // SPDX-License-Identifier: MIT |
| // |
| |
| #include "ImageUtils.hpp" |
| #include "BoundingBox.hpp" |
| #include "Types.hpp" |
| |
| #include <armnn/Logging.hpp> |
| |
| static cv::Scalar GetScalarColorCode(std::tuple<int, int, int> color) |
| { |
| return cv::Scalar(std::get<0>(color), std::get<1>(color), std::get<2>(color)); |
| } |
| |
| void AddInferenceOutputToFrame(od::DetectedObjects& decodedResults, cv::Mat& inputFrame, |
| std::vector<std::tuple<std::string, common::BBoxColor>>& labels) |
| { |
| for(const od::DetectedObject& object : decodedResults) |
| { |
| int confidence = static_cast<int>(object.GetScore() * 100); |
| int baseline = 0; |
| std::string textStr; |
| std::tuple<int, int, int> colorCode(255, 0, 0); //red |
| |
| if (labels.size() > object.GetId()) |
| { |
| auto label = labels[object.GetId()]; |
| textStr = std::get<0>(label) + " - " + std::to_string(confidence) + "%"; |
| colorCode = std::get<1>(label).colorCode; |
| } |
| else |
| { |
| textStr = std::to_string(object.GetId()) + " - " + std::to_string(confidence) + "%"; |
| } |
| |
| cv::Size textSize = getTextSize(textStr, cv::FONT_HERSHEY_DUPLEX, 1.0, 1, &baseline); |
| |
| const od::BoundingBox& bbox = object.GetBoundingBox(); |
| |
| if (bbox.GetX() + bbox.GetWidth() > inputFrame.cols) |
| { |
| cv::Rect r(bbox.GetX(), bbox.GetY(), inputFrame.cols - bbox.GetX(), bbox.GetHeight()); |
| |
| cv::rectangle(inputFrame, r, GetScalarColorCode(colorCode), 2, 8, 0); |
| } |
| else if (bbox.GetY() + bbox.GetHeight() > inputFrame.rows) |
| { |
| cv::Rect r(bbox.GetX(), bbox.GetY(), bbox.GetWidth(), inputFrame.rows - bbox.GetY()); |
| |
| cv::rectangle(inputFrame, r, GetScalarColorCode(colorCode), 2, 8, 0); |
| } |
| else |
| { |
| cv::Rect r(bbox.GetX(), bbox.GetY(), bbox.GetWidth(), bbox.GetHeight()); |
| |
| cv::rectangle(inputFrame, r, GetScalarColorCode(colorCode), 2, 8, 0); |
| } |
| |
| int textBoxY = std::max(0 ,bbox.GetY() - textSize.height); |
| |
| cv::Rect text(bbox.GetX(), textBoxY, textSize.width, textSize.height); |
| |
| cv::rectangle(inputFrame, text, GetScalarColorCode(colorCode), -1); |
| |
| cv::Scalar color; |
| |
| if(std::get<0>(colorCode) + std::get<1>(colorCode) + std::get<2>(colorCode) > 127) |
| { |
| color = cv::Scalar::all(0); |
| } |
| else |
| { |
| color = cv::Scalar::all(255); |
| } |
| |
| cv::putText(inputFrame, |
| textStr , |
| cv::Point(bbox.GetX(), textBoxY + textSize.height -(textSize.height)/3), |
| cv::FONT_HERSHEY_DUPLEX, |
| 0.5, |
| color, |
| 1); |
| } |
| } |
| |
| |
| void ResizeFrame(const cv::Mat& frame, cv::Mat& dest, const common::Size& aspectRatio) |
| { |
| if(&dest != &frame) |
| { |
| double longEdgeInput = std::max(frame.rows, frame.cols); |
| double longEdgeOutput = std::max(aspectRatio.m_Width, aspectRatio.m_Height); |
| const double resizeFactor = longEdgeOutput/longEdgeInput; |
| cv::resize(frame, dest, cv::Size(0, 0), resizeFactor, resizeFactor, DefaultResizeFlag); |
| } |
| else |
| { |
| const std::string warningMessage{"Resize was not performed because resized frame references the source frame."}; |
| ARMNN_LOG(warning) << warningMessage; |
| } |
| } |
| |
| /** Pad a frame with zeros (add rows and columns to the end) */ |
| void PadFrame(const cv::Mat& src, cv::Mat& dest, const int bottom, const int right) |
| { |
| if(&dest != &src) |
| { |
| cv::copyMakeBorder(src, dest, 0, bottom, 0, right, cv::BORDER_CONSTANT); |
| } |
| else |
| { |
| const std::string warningMessage |
| { |
| "Pad was not performed because destination frame references the source frame." |
| }; |
| ARMNN_LOG(warning) << warningMessage; |
| } |
| } |
| |
| void ResizeWithPad(const cv::Mat& frame, cv::Mat& dest, cv::Mat& cache, const common::Size& destSize) |
| { |
| ResizeFrame(frame, cache, destSize); |
| PadFrame(cache, dest,destSize.m_Height - cache.rows,destSize.m_Width - cache.cols); |
| } |