How to use the cv::cuda::minMaxLoc function in Python

cudawarped · March 22, 2022, 6:29pm

The python bindings haven’t been added correctly.

You can fix this by manually adding CV_OUT to the output arguments and re-compiling, see below

cudawarped/opencv_contrib/blob/ea450e63787d133c4cfccd8c45b2a6a5392ce6af/modules/cudaarithm/include/opencv2/cudaarithm.hpp#L640

      
        
            @param minVal Pointer to the returned minimum value. Use NULL if not required.
            @param maxVal Pointer to the returned maximum value. Use NULL if not required.
            @param minLoc Pointer to the returned minimum location. Use NULL if not required.
            @param maxLoc Pointer to the returned maximum location. Use NULL if not required.
            @param mask Optional mask to select a sub-matrix.
            
            
The function does not work with CV_64F images on GPU with the compute capability \< 1.3.
            
            
@sa minMaxLoc
             */
            CV_EXPORTS_W void minMaxLoc(InputArray src, CV_OUT double* minVal, CV_OUT double* maxVal, CV_OUT Point* minLoc, CV_OUT Point* maxLoc,
                                      InputArray mask = noArray());
            /** @overload */
            CV_EXPORTS_W void findMinMaxLoc(InputArray src, OutputArray minMaxVals, OutputArray loc,
                                          InputArray mask = noArray(), Stream& stream = Stream::Null());
            
            
/** @brief Counts non-zero matrix elements.
            
            
@param src Single-channel source image.
            
            
The function does not work with CV_64F images on GPUs with the compute capability \< 1.3.

Topic		Replies	Views
How does VideoCapture with CUDA work? Python cuda , videoio	2	4185	February 21, 2023
Looking for CUDA functions Python java , cuda	8	990	August 3, 2023
Getting location points with "cv::cuda::findMinMaxLoc" function	1	449	January 4, 2021
User error of cuda::TemplateMatching? or actual Memory leak? C++ cuda	2	350	August 14, 2023
Src.empty() in function 'cvtColor' Python	2	1234	June 16, 2021

How to use the cv::cuda::minMaxLoc function in Python

Related topics