缝合器的OpenCV断言失败

Question

I'm writing a program that takes a video as input and return a panorama image. I'm executing this code:

vector< Mat > vImg;
Mat rImg;
Mat img;



VideoCapture cap("../Debug/vid/vid.avi");

if (!cap.isOpened())
{
    cout << "Can't open video";
    waitKey(0);
    return ;
}


//default stitcher
Stitcher stitcher = Stitcher::createDefault(true);

//set orb finder
Ptr<FeaturesFinder> finder=new OrbFeaturesFinder();
stitcher.setFeaturesFinder(finder); 

//set seam resolution
stitcher.setSeamEstimationResol(0.08);

//set confidence threshold
stitcher.setPanoConfidenceThresh(0.5);

//set warper
Ptr<WarperCreator> warper = new cv::PlaneWarper();
stitcher.setWarper(warper);

//set exposure compensation
Ptr<ExposureCompensator> exposure_compensator = ExposureCompensator::createDefault(ExposureCompensator::GAIN);
stitcher.setExposureCompensator(exposure_compensator);


//set seam finder
Ptr<SeamFinder> seam_finder = new DpSeamFinder(DpSeamFinder::COLOR_GRAD);
stitcher.setSeamFinder(seam_finder);

//set matcher
Ptr<FeaturesMatcher> matcher = new BestOf2NearestMatcher(true);
stitcher.setFeaturesMatcher(matcher);


//sett wave correction
stitcher.setWaveCorrection(true);

cap >> img;
vImg.push_back(img);
vImg.push_back(img);    



int counter = 1;



while (counter < total_frames)
{

    Mat img_loop;

    cap >> img_loop;


    vImg.at(1) = img_loop;



    stitcher.stitch(vImg, rImg);


    if (rImg.rows>0 && rImg.cols>0)
    {
        imshow("debug", rImg);      


        vImg.at(0) = rImg;
    }



    rImg = NULL;


    counter ++;

}

but it gives to me the "Assertion Failed (dims <=2 && data ...)" error. What the problem could be?

I'm using visual studio 2013 community, opencv 2.4.10 and windows 7 x64

EDIT Added the "call stack"

    KernelBase.dll!_RaiseException@16() 
Unknown>        msvcr120d.dll!_CxxThrowException(void *pExceptionObject, const_s__ThrowInfo * pThrowInfo) Riga 154  C++
    opencv_core2410d.dll!774ec7f8() Sconosciuto

EDIT I notice that if I stitch 2 identical images it gives me error. It is normal?

Answer 1

If the problem is about memory allocation, You can try to declare your vector as a static.

static vector<Mat> vImg;

I am not sure about that but i faced this problem while allocating huge array and this trick solved my problem instead of using pointers.

I hope it helps.

Answer 2

I resolved implementing manualing the stitching pipeline. Thanks to you all!