如何替换Mat图像的矩形区域 [英] How to replace a rectangular region of Mat image

问题描述

我正在使用opencv图像处理库.我只想用另一个小图像替换原始Mat图像的矩形区域(小于原始图像).我找不到执行此操作的方向

I am working with opencv image processing library. I just want to replace rectangular region(smaller than the original image) of my original Mat image with another small image. I couldn't find a direction to do this

有人可以帮助我吗?预先感谢

Can anybody help me please. Thanks in advance

推荐答案

这是一种方法，而不是最佳方法.

Here's a way, not claiming its the best way.

Mat m = ... // your smaller mat
Mat submat= matOrig.submat(new Rect(x,y, m.cols(), m.rows()) );
m.copyTo(submat);

假设m不超出matOrig的范围，这应该可以工作.当您获得子垫时，它仍然链接到其源Mat.

That should work assuming m doesn't go out of bounds inside matOrig. When you get a submat, it is still linked to its source Mat.

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