Opencv二值图像的分布直方图

Mat img;
int color[];
int main()
{
    VideoCapture video();
    if (!video.isOpened())
    {
        return -;
    }
    Mat img;
    Mat img1, img2, img3;
    Mat grayimg1, grayimg2, grayimg3;
    Mat binaryimg;
    video >> img;
    cvtColor(img, grayimg1, CV_BGR2GRAY);
    while ()
    {
        video >> img;

        cvtColor(img, grayimg2, CV_BGR2GRAY);
        absdiff(grayimg2, grayimg1, grayimg3);
        medianBlur(binaryimg, binaryimg, );
        threshold(grayimg3, binaryimg, , , CV_THRESH_BINARY_INV);

        imshow("gray", grayimg3);
        imshow("binary", binaryimg);
        //----------------------------------------------
        int nRow = binaryimg.rows;
        int nCol = binaryimg.cols;
        //imshow("img", binaryimg);
        memset(color, , sizeof(color));
        for (int i = ; i < nRow; i++)
        {
            uchar *data = binaryimg.ptr<uchar>(i);
            for (int j = ; j < nCol; j++)
            {
                if (*data == )
                    color[j]++;
                *data++;
            }
        }

        int high = ;
        Mat histimg(high, nCol, CV_8UC3);

        for (int j = ; j < nCol; j += )
        {
            if (color[j] < )
                color[j] = ;
            //else
                //color[j] = 400;
            line(histimg, Point(j, high - color[j]), Point(j, high), Scalar(, , ), );
        }

        for (int j = ; j<nCol; j++)
        {

        }
        imshow("Hist", histimg);
        //--------------------------------------------------------
        if(waitKey() > )
        {
            break;
        }
    }
    waitKey();
    return ;
}