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Restore match template for newer IPP and ICV packages #4

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Restore match template for newer IPP and ICV packages #4

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4 changes: 3 additions & 1 deletion hal/ipp/src/matchtemplate_ipp.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -114,10 +114,12 @@ int ipp_hal_matchTemplate(const uchar* src_data, size_t src_step, int src_width,
if(templ.size().area()*4 > img.size().area())
return CV_HAL_ERROR_NOT_IMPLEMENTED;

#if IPP_VERSION_X100 < 202610
// CV_8U SQDIFF/SQDIFF_NORMED suffer from float32 catastrophic cancellation
// in IPP's internal accumulators; fall through to the double-precision path instead.
// in IPP's internal accumulators (older versions); fall through to the double-precision path instead.
if(depth == CV_8U && (method == cv::TM_SQDIFF || method == cv::TM_SQDIFF_NORMED))
return CV_HAL_ERROR_NOT_IMPLEMENTED;
#endif

if(method == cv::TM_SQDIFF)
{
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