OpenCV错误:断言失败(scn == 3 || scn == 4)在cv :: cvtColor中,文件..\..\..\..\opencv\modules\imgproc\src\color.cpp,第3737行

Question

您好我试图从OpenCV运行此示例代码:

#include "opencv2\opencv.hpp"

using namespace cv;

int main(int, char**)
{
    VideoCapture cap(0); // open the default camera
    if (!cap.isOpened())  // check if we succeeded
        return -1;

    Mat edges;
    namedWindow("edges", 1);
    for (;;)
    {
        Mat frame;
        cap >> frame; // get a new frame from camera
        cvtColor(frame, edges, CV_BGR2GRAY);
        GaussianBlur(edges, edges, Size(7, 7), 1.5, 1.5);
        Canny(edges, edges, 0, 30, 3);
        imshow("edges", edges);
        if (waitKey(30) >= 0) break;
    }
    // the camera will be deinitialized automatically in VideoCapture destructor
    return 0;
}

我目前在Macbook Pro上使用Windows 7 x64 BootCamp.我正在使用Visual Studios 2013和OpenCV 2.4.9运行此代码.

这就是我设置配置属性的方法:

VC++ Directories: Include Directories: H:\opencv\build\include;$(IncludePath)

Linker:General:Additional Library Directories: H:\opencv\build\x64\vc12\lib;%(AdditionalLibraryDirectories)
Linker:Input:Additional Dependencies: opencv_calib3d249.lib;opencv_contrib249.lib;opencv_core249.lib;opencv_features2d249.lib;opencv_flann249.lib;opencv_gpu249.lib;opencv_highgui249.lib;opencv_imgproc249.lib;opencv_legacy249.lib;opencv_ml249.lib;opencv_nonfree249.lib;opencv_objdetect249.lib;opencv_ocl249.lib;opencv_photo249.lib;opencv_stitching249.lib;opencv_superres249.lib;opencv_ts249.lib;opencv_video249.lib;opencv_videostab249.lib;%(AdditionalDependencies)

当我在Release x64模式下单击Local Windows Debugger时,我从Visual Studios收到以下错误:

Project3.exe中0x000007FEFD21B3DD的第一次机会异常:Microsoft C++异常:cv ::内存位置0x000000000019A8A0的异常.

如果存在此异常的处理程序,则可以安全地继续该程序.

当我单击Break而不是(害怕按Continue)时,会弹出一个名为Edges的窗口,并且自绿灯亮起后相机会打开.但我也在命令窗口中收到以下错误:

OpenCV错误:断言失败(scn == 3 || scn == 4)在cv :: cvtColor中,文件........\opencv\modules\imgproc\src\color.cpp,第3737行

我是C++和Visual Studios的新手,任何帮助都会受到赞赏.提前致谢!

Answer 1

从评论中的对话到问题，我们看到VideoCapture给出了灰度框架。所以调用cvtColor导致了崩溃。

...
Mat frame;
cap >> frame; // frame is already CV_8UC1
//cvtColor(frame, edges, CV_BGR2GRAY); // so don't to convert here, or crash!
edges = frame.clone(); 
...