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While using warpPerspective with openCL I was having a memory leak. Disabling opencl by using Mat or calling cv::ocl::setUseOpenCL(false) solved the problem. I think I've tracked it down to a line in ocl_warpTransform that uses convertTo from Mat to UMat. Here is code to replicate this. Bug?

    Mat matM(Size(5, 5), CV_32F);
    UMat M0;
    matM.convertTo(M0, CV_32F);

While using warpPerspective with openCL I was having a memory leak. Disabling opencl by using Mat or calling cv::ocl::setUseOpenCL(false) solved the problem. I think I've tracked it down to a line in ocl_warpTransform that uses convertTo from Mat to UMat. Here is code to replicate this. Bug?this.

int main(int, char)
{
    while (true)
    {
        Mat matM(Size(5, 5), CV_32F);
CV_32F),temp;
        UMat M0;
     matM.convertTo(M0, CV_32F);
    }
}

While using warpPerspective with openCL I was having a memory leak. Disabling opencl by using Mat or calling cv::ocl::setUseOpenCL(false) solved the problem. I think I've tracked it down to a line in ocl_warpTransform that uses convertTo from Mat to UMat. Here is code to replicate this.

int main(int, char)
{
    while (true)
    {
        Mat matM(Size(5, 5), CV_32F),temp;
        UMat M0;
        matM.convertTo(M0, CV_32F);
    }
}

I used VS 2015 diagnostics tool (alt-F2). Ran this program and did a memory snapshot at about 2 sec and another one 10 seconds later. Attached is a picture of the changed memory report.

While using warpPerspective with openCL I was having a memory leak. Disabling opencl by using Mat or calling cv::ocl::setUseOpenCL(false) solved the problem. I think I've tracked it down to a line in ocl_warpTransform that uses convertTo from Mat to UMat. Here is code to replicate this.

int main(int, char)
{
    while (true)
    {
        Mat matM(Size(5, 5), CV_32F),temp;
CV_32F);
        UMat M0;
        matM.convertTo(M0, CV_32F);
    }
}

I used VS 2015 diagnostics tool (alt-F2). Ran this program and did a memory snapshot at about 2 sec and another one 10 seconds later. Attached is a picture of the changed memory report.