OpenCV错误:cv :: cvtColor，文件.. \ .. \ .. \ .. \ opencv \ modules \ imgproc \ src \ color.cpp，第3737行中的断言失败(scn == 3 || scn == 4) [英] OpenCV Error: Assertion failed (scn == 3 || scn == 4) in cv:: cvtColor, file ..\..\..\..\opencv\modules\imgproc\src\color.cpp, line 3737

问题描述

我正在尝试从OpenCV运行以下示例代码:

Hi I am trying to run this sample code from OpenCV:

#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;
}

我当前在Macbook Pro上使用Windows 7 x64 BootCamp.我正在Visual Studios 2013和OpenCV 2.4.9中运行此代码.

I am currently using a Windows 7 x64 BootCamp on a Macbook Pro. I'm running this code with Visual Studios 2013 and OpenCV 2.4.9.

这是我设置配置属性的方式:

This is how I've set up my Config Properties:

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模式下单击本地Windows调试器"时，我从Visual Studios中收到以下错误:

When I click on Local Windows Debugger in Release x64 mode I get the following error from Visual Studios:

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

First-chance exception at 0x000007FEFD21B3DD in Project3.exe: Microsoft C++ exception: cv::Exception at memory location 0x000000000019A8A0.

如果有用于此异常的处理程序，则该程序可能是安全的 继续.

If there is a handler for this exception, the program may be safely continued.

当我单击中断"时(消失后按继续")，会弹出一个名为Edges的窗口，并且由于绿色指示灯会亮起，因此相机也会打开.但是我在命令窗口中也收到以下错误:

When I click Break instead (scared to press Continue), a window named Edges does pop up and the camera does turn on since the green light turns on. But I also get the following error in the command window:

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

OpenCV Error: Assertion failed (scn == 3 || scn == 4) in cv:: cvtColor, file ........\opencv\modules\imgproc\src\color.cpp, line 3737

我对C ++和Visual Studios还是很陌生，任何帮助将不胜感激.提前致谢！

I'm pretty new to C++ and Visual Studios, any help would be appreciated. Thanks in advance!

推荐答案

从注释中的对话到问题，我们看到VideoCapture给出了灰度框架.因此，对cvtColor的调用导致了崩溃.

From the conversation in the comments to the question, we saw that VideoCapture gives frame in grayscale. So the call to cvtColor caused the crash.

...
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(); 
...

这篇关于OpenCV错误:cv :: cvtColor，文件.. \ .. \ .. \ .. \ opencv \ modules \ imgproc \ src \ color.cpp，第3737行中的断言失败(scn == 3 || scn == 4)的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！