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Dmitry Kurtaev
fa56623458
DNN graph fusion with shared nodes #24463 ### Pull Request Readiness Checklist For now, nodes from matched pattern are removed during the matching process so if nodes are used in similar subgraph, they cannot be found. required for https://github.com/opencv/opencv/pull/24397 **Merge with extra**: https://github.com/opencv/opencv_extra/pull/1115 A part from [model_name ](https://github.com/onnx/models/blob/main/vision/object_detection_segmentation/fcn/model/fcn-resnet101-11.onnx) with two Resize subgraphs with shared nodes:  See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request - [x] I agree to contribute to the project under Apache 2 License. - [x] To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV - [x] The PR is proposed to the proper branch - [x] There is a reference to the original bug report and related work - [x] There is accuracy test, performance test and test data in opencv_extra repository, if applicable Patch to opencv_extra has the same branch name. - [x] The feature is well documented and sample code can be built with the project CMake
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