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core: workaround transform() inplace calls

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This commit is contained in:
Alexander Alekhin 2019-10-01 16:52:14 +03:00
parent ba0b3983c6
commit 77346d7286
1 changed files with 6 additions and 0 deletions
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6
modules/core/src/matmul.dispatch.cpp
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@ -442,6 +442,12 @@ void transform(InputArray _src, OutputArray _dst, InputArray _mtx)
_dst.create( src.size(), CV_MAKETYPE(depth, dcn) );
Mat dst = _dst.getMat();
if (src.data == dst.data) // inplace case
{
CV_Assert(scn == dcn);
src = src.clone(); // TODO Add performance warning
}
int mtype = depth == CV_32S || depth == CV_64F ? CV_64F : CV_32F;
AutoBuffer<double> _mbuf;
double* mbuf;