cvtColor断言失败（OpenCV与C ++） [英] cvtColor assertion failed ( OpenCV with C++ )

问题描述

我有一个

  cv :: Mat image; 
  

对象，我从一个文件加载图像，它正确读取所有。 p>

现在我写了一个函数将它转换为灰色。

  cv :: cvtColor（image，image，CV_RGB2GRAY）; 
  

此错误出现：

  OpenCV错误：断言失败（scn == 3 || scn == 4）在cvtColor，文件/build/buildd/opencv-2.3.1/modules/imgproc/src/color.cpp ，line 2834 
在抛出cv :: Exception的实例后调用终止
 what（）：/build/buildd/opencv-2.3.1/modules/imgproc/src/color.cpp:2834 ：error：（-215）scn == 3 || scn == 4在函数cvtColor 
  

可能是什么问题？

这是我如何读取图像（通过imagehandler类有成员cv :: Mat m_image）

  imagehandler :: imagehandler（const std :: string& fileName）
：m_image（imread（fileName，CV_LOAD_IMAGE_COLOR））
 {
 if（！m_image.data）
 {
 cout<< 加载失败<< fileName<< endl; 
} 
 
} 
  

解决方案

尝试使用其他dst图片：

  cv :: Mat grayImage; 
 cv :: cvtColor（image，grayImage，CV_RGB2GRAY）; 
  

I have a

cv::Mat image;

object, which I loaded an image to from a file, it reads it correctly and all.

Now I have written a function to transform it to grey color.

cv::cvtColor(image, image, CV_RGB2GRAY);

And this error comes up:

OpenCV Error: Assertion failed (scn == 3 || scn == 4) in cvtColor, file /build/buildd/opencv-2.3.1/modules/imgproc/src/color.cpp, line 2834
terminate called after throwing an instance of 'cv::Exception'
  what():  /build/buildd/opencv-2.3.1/modules/imgproc/src/color.cpp:2834: error: (-215) scn == 3 || scn == 4 in function cvtColor

what could be the problem?

This is how I read the image (through an imagehandler class which has a member cv::Mat m_image)

imagehandler::imagehandler(const std::string& fileName)
: m_image(imread(fileName, CV_LOAD_IMAGE_COLOR))
{
        if(!m_image.data)
{
    cout << "Failed loading " << fileName << endl;
}

}

解决方案

Try using different dst image:

cv::Mat grayImage;
cv::cvtColor(image, grayImage, CV_RGB2GRAY);

这篇关于cvtColor断言失败（OpenCV与C ++）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！