Question

我正在Visual Studio Community 2017中制作涉及手识别的节奏游戏。

在该游戏中，有一个功能可以检查屏幕上某个圆圈中是否有手。以下是该函数的代码。

bool check(Mat &show)
{
    //show is the image where the function will detect hands from
    std::vector<Rect> hands;
    Mat grayVer;
    int i;
    long long distance;
    printf("Check function started!\n");
    cvtColor(show, grayVer, COLOR_BGR2GRAY);
    imshow("greyVer", grayVer);
    waitKey(1);
    printf("detecting...\n");
    hand_cascade.detectMultiScale(
       grayVer, hands, 1.1, 3, 0 | CASCADE_SCALE_IMAGE, Size(200, 200));

    if (hands.size() > 0)
        printf("detected hands!\n");
    for (i = 0; i < hands.size(); i++) 
    {
        Point center(hands[i].x + hands[i].width / 2, hands[i].y + hands[i].height / 2);
        ellipse(show, center, 
               Size(hands[i].width / 2, hands[i].height / 2), 0, 0, 360,
               Scalar(255, 0, 255), 4, 8, 0);
        distance = 
           square( xCoor/*the X Coordinate of the circle a hand has to be in*/
             - (hands[i].x + hands[i].width / 2)) + 
           square(yCoor/*the Y Coordinate of the circle a hand has to be in*/
              - (hands[i].y + hands[i].height / 2));
        if (distance > square(
             range/*the size of the circle a hand has to be in*/)) 
        {
            return true;
        }
    }
    return false;
}

构建此代码时没有错误发生。但是，当调用detectMultiScale函数时，程序立即暂停几秒钟并崩溃。同样，该函数有时不会使程序崩溃，但是在结果Vector中什么也不留下。

如果要获取程序的完整文件（Visual Studio项目文件），请单击此Link

OpenCV detectMultiscale崩溃程序

0 个答案: