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[Feature Request] Extend transpose operator for MatND, Mat with channels and extend API Β· Issue #19751 Β· opencv/opencv Β· GitHub
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- OpenCV => 4.5.0
- Operating System / Platform => Linux, Windows
- Compiler => any C++
Detailed description
In image preprocessing and postprocessing tasks for neural networks, the transpose operation is often used, for example, from the NumPy library: img.transpose(1, 2, 0)
. Unfortunately, when we work in C++, we have no way to repeat this operation using OpenCV in one step. As a workaround, I use reshaping and memory copying, which reduces performance a lot.
I think it is possible to implement this since this ability already exists in https://docs.opencv.org/master/d2/d3c/classcv_1_1dnn_1_1PermuteLayer.html
Steps to reproduce
cv::Mat frame = cv::imread(img_path);
cv::cuda::GpuMat gpu_frame(frame), result;
cv::cuda::transpose(gpu_frame, result);
Issue submission checklist
- I report the issue, it's not a question
- I checked the problem with documentation, FAQ, open issues,
forum.opencv.org, Stack Overflow, etc and have not found solution - I updated to latest OpenCV version and the issue is still there
- There is reproducer code and related data files: videos, images, onnx, etc
ameerazam0 and AleksandrPanovrogday
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