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DNN(Int8): improper UMat constructor is used #20888

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#20892
Closed
DNN(Int8): improper UMat constructor is used#20888
#20892
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bugcategory: dnncategory: ocl
Milestone
4.5.5
@alalek

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@alalek
alalek
opened on Oct 17, 2021

Code

opencv/modules/dnn/src/int8layers/quantization_utils.cpp

Line 55 in 4223495

UMat inputFp32(shape(inputs[0]), CV_32F);

selects this constructor:

opencv/modules/core/include/opencv2/core/mat.hpp

Lines 2427 to 2429 in 4223495

// FIXIT copyData=false is not implemented, drop this in favor of cv::Mat (OpenCV 5.0)
//! builds matrix from std::vector with or without copying the data
template<typename _Tp> explicit UMat(const std::vector<_Tp>& vec, bool copyData=false);

which is not expected by coding context (tried to allocate ND shape).

/cc @vpisarev @SamFC10

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