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Hi there,

dealing with the stitcher module in openCV 3.0 (newest checkout from GitHub), Win7 32bit and VS 2013, and searching this forum I did not find a reasonable answer yet. A straighforward implementation for my problem:

cv::Mat imgLeft = cv::imread("panoLeftS.jpg");
cv::Mat imgRight = cv::imread("panoRightS.jpg");

std::vector<cv::Mat> images;
images.push_back(imgLeft);
images.push_back(imgRight);

cv::Mat pano;
cv::Stitcher stitcher = cv::Stitcher::createDefault(false);

stitcher.setRegistrationResol(-1); /// 0.6
stitcher.setSeamEstimationResol(-1);   /// 0.1
stitcher.setCompositingResol(-1);   //1
stitcher.setPanoConfidenceThresh(-1);   //1
stitcher.setWaveCorrection(true);
stitcher.setWaveCorrectKind(cv::detail::WAVE_CORRECT_HORIZ);

cv::Stitcher::Status status = stitcher.stitch(images, pano);

if (status != cv::Stitcher::OK)
{
    std::cout << "Can't stitch images, error code = " << status << std::endl;
    return -1;
}

In debug mode, everything is working fine. Running in release mode I am always getting a segfault in this line (ocl.cpp) without any detailed information:

bool allocate(UMatData* u, int accessFlags, UMatUsageFlags usageFlags) const
    {
        if(!u)
            return false;

        UMatDataAutoLock lock(u);

        **if(u->handle == 0)**
        {
            CV_Assert(u->origdata != 0);
            Context& ctx = Context::getDefault();
            int createFlags = 0, flags0 = 0;
            getBestFlags(ctx, accessFlags, usageFlags, createFlags, flags0);

What I am doing wrong? On my two machines, I set the OPENCV_OPENCL_DEVICE = Intel(R) OpenCL:CPU:0 and installed the Intel openCL driver set.

Do you have any hints what could be the problem??

Thanks for your help! Johannes

Hi there,

dealing with the stitcher module in openCV 3.0 (newest checkout from GitHub), Win7 32bit and VS 2013, and searching this forum I did not find a reasonable answer yet. A straighforward implementation for my problem:

cv::Mat imgLeft = cv::imread("panoLeftS.jpg");
cv::Mat imgRight = cv::imread("panoRightS.jpg");

std::vector<cv::Mat> images;
images.push_back(imgLeft);
images.push_back(imgRight);

cv::Mat pano;
cv::Stitcher stitcher = cv::Stitcher::createDefault(false);

stitcher.setRegistrationResol(-1); /// 0.6
stitcher.setSeamEstimationResol(-1);   /// 0.1
stitcher.setCompositingResol(-1);   //1
stitcher.setPanoConfidenceThresh(-1);   //1
stitcher.setWaveCorrection(true);
stitcher.setWaveCorrectKind(cv::detail::WAVE_CORRECT_HORIZ);

cv::Stitcher::Status status = stitcher.stitch(images, pano);

if (status != cv::Stitcher::OK)
{
    std::cout << "Can't stitch images, error code = " << status << std::endl;
    return -1;
}

In debug mode, everything is working fine. Running in release mode I am always getting a segfault in this line (ocl.cpp) (ocl.cpp) without any detailed information:

bool allocate(UMatData* u, int accessFlags, UMatUsageFlags usageFlags) const
    {
        if(!u)
            return false;

        UMatDataAutoLock lock(u);

        **if(u->handle //here is the crash (!)
        if(u->handle == 0)**
0)
        {
            CV_Assert(u->origdata != 0);
            Context& ctx = Context::getDefault();
            int createFlags = 0, flags0 = 0;
            getBestFlags(ctx, accessFlags, usageFlags, createFlags, flags0);

What I am doing wrong? On my two machines, I set the OPENCV_OPENCL_DEVICE = Intel(R) OpenCL:CPU:0 and installed the Intel openCL driver set.

Do you have any hints what could be the problem??

Thanks for your help! Johannes

Hi there,

dealing with the stitcher module in openCV 3.0 (newest checkout from GitHub), Win7 32bit and VS 2013, and searching this forum I did not find a reasonable answer yet. A straighforward implementation for my problem:

cv::Mat imgLeft = cv::imread("panoLeftS.jpg");
cv::Mat imgRight = cv::imread("panoRightS.jpg");

std::vector<cv::Mat> images;
images.push_back(imgLeft);
images.push_back(imgRight);

cv::Mat pano;
cv::Stitcher stitcher = cv::Stitcher::createDefault(false);

stitcher.setRegistrationResol(-1); /// // 0.6
stitcher.setSeamEstimationResol(-1);   /// // 0.1
stitcher.setCompositingResol(-1);   //1
stitcher.setPanoConfidenceThresh(-1);   //1
stitcher.setWaveCorrection(true);
stitcher.setWaveCorrectKind(cv::detail::WAVE_CORRECT_HORIZ);

cv::Stitcher::Status status = stitcher.stitch(images, pano);

if (status != cv::Stitcher::OK)
{
    std::cout << "Can't stitch images, error code = " << status << std::endl;
    return -1;
}

In debug mode, everything is working fine. Running in release mode I am always getting a segfault in this line (ocl.cpp) without any detailed information:

bool allocate(UMatData* u, int accessFlags, UMatUsageFlags usageFlags) const
    {
        if(!u)
            return false;

        UMatDataAutoLock lock(u);

        //here is the crash (!)
        if(u->handle == 0)
        {
            CV_Assert(u->origdata != 0);
            Context& ctx = Context::getDefault();
            int createFlags = 0, flags0 = 0;
            getBestFlags(ctx, accessFlags, usageFlags, createFlags, flags0);

What I am doing wrong? On my two machines, I set the OPENCV_OPENCL_DEVICE = Intel(R) OpenCL:CPU:0 and installed the Intel openCL driver set.

Do you have any hints what could be the problem??

Thanks for your help! Johannes