打印出OpenCV C ++中（Mat）矩阵的值 [英] Print out the values of a (Mat) matrix in OpenCV C++

问题描述

我想使用cout将OpenCV中的矩阵值转储到控制台。我很快就知道，我不明白OpenvCV的类型系统和C ++模板足以完成这个简单的任务。

读者请张贴（或指向我）函数或代码片段打印Mat？

尊敬的，
Aaron

使用新的C ++ Mat接口而不是较旧的CvMat接口是优先的。

解决方案

http://stackoverflow.com/questions/1844736/accesing-a-matrix-element-in-the-mat-object-not-the-cvmat-object-in-opencv-c\">在矩阵元素中获取Mat OpenCV C ++中的对象（而不是CvMat对象）

然后只需循环 cout中的所有元素< <0>

或者更好地使用新的C ++界面（感谢 SSteve ）

  cv :: Mat M; 
 
 cout<< M =<< endl<< < M < endl<< endl; 
  

I want to dump the values of a matrix in OpenCV to the console using cout. I quickly learned that I do not understand OpenvCV's type system nor C++ templates well enough to accomplish this simple task.

Would a reader please post (or point me to) a little function or code snippet that prints a Mat?

Regards, Aaron

PS: Code that uses the newer C++ Mat interface as opposed to the older CvMat interface is preferential.

解决方案

See the first answer to Accesing a matrix element in the "Mat" object (not the CvMat object) in OpenCV C++
Then just loop over all the elements in cout << M.at<double>(0,0); rather than just 0,0

Or better still with the new C++ interface (thanks to SSteve)

cv::Mat M;

cout << "M = "<< endl << " "  << M << endl << endl;

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