Opencv4.7 builds successfully, but cannot run the mcc example

reoskfjd · September 18, 2023, 5:20am

I get an error about “Exception occurred. Segmentation fault”.
After I try adding “net.enableWinograd(false);”, I can run the sample code.

github.com/opencv/opencv

Segmentation fault for cv::dnn::readNetFromONNX.forward()

opened 07:17AM - 03 Jan 23 UTC

closed 07:37PM - 09 Jan 23 UTC

UNeedCryDear

bug optimization category: dnn

### System Information OpenCV version: 4.7.0 from https://github.com/opencv/o…pencv/archive/refs/tags/4.7.0.zip Operating System / Platform: Win10 22H2 Compiler & compiler version:VS2019 -MSVC14.2 ### Detailed description ONNX export from yolov5-seg.pt: https://drive.google.com/file/d/1tV2moQxNfLzNf6yXm5Zev5CVj2o9zuaz/view?usp=share_link Some wrong happened in ```runWinograd63()```https://github.com/opencv/opencv/blob/9208dcb07c015e1fda44e40bb07b43c700b4bf46/modules/dnn/src/layers/fast_convolution/fast_convolution.cpp#L420 Wwhen running here finally, an error is reported: the vector is out of range. https://github.com/opencv/opencv/blob/9208dcb07c015e1fda44e40bb07b43c700b4bf46/modules/dnn/src/layers/fast_convolution/winograd_3x3s1_f63.cpp#L1047 ![image](https://user-images.githubusercontent.com/52729998/210313011-b8f04a22-3344-4470-98bc-fd03ec8cadd1.png) @lioneldaniel told me that it was caused by this PR https://github.com/opencv/opencv/pull/22593, so how to solve this problem？ https://github.com/UNeedCryDear/yolov5-seg-opencv-onnxruntime-cpp/issues/6#issue-1515845995 ### Steps to reproduce test code: ```cpp #include <iostream> #include <opencv2/opencv.hpp> using namespace cv; using namespace std; string model_path = "./yolov5s-seg.onnx"; Net net=readNetFromONNX(model_path ); net.setPreferableBackend(cv::dnn::DNN_BACKEND_DEFAULT); net.setPreferableTarget(cv::dnn::DNN_TARGET_CPU); Mat test_img=Mat::zeros(Size(640,640),CV_8UC3); Mat blob; blobFromImage(test_img, blob, 1 / 255.0, cv::Size(640, 640), cv::Scalar(0, 0, 0), true, false); net.setInput(blob); vector<string> output_layer_names{ "output0","output1" }; net.forward(net_output_img, output_layer_names); ... ``` The above code can run correctly in versions 4.5.0~4.6.0, but an error occurred in 4.7.0. ### Issue submission checklist - [X] I report the issue, it's not a question - [X] I checked the problem with documentation, FAQ, open issues, forum.opencv.org, Stack Overflow, etc and have not found any solution - [X] I updated to the latest OpenCV version and the issue is still there - [X] There is reproducer code and related data files (videos, images, onnx, etc)

Does Winograd have anything to do with computer equipment? Why can it run if it is set to false?

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Opencv4.7 builds successfully, but cannot run the mcc example

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