将两个Mat图像合并为一个 [英] Merge two Mat images into one

问题描述

我有问题。我有一张图片。然后，我必须将图像分成两个相等的部分。我这样做是这样的（代码已编译，一切都很好）：

I have a problem. I have an image. Then I have to split the image into two equal parts. I made this like that (the code is compiled, everything is good):

Mat image_temp1 = image(Rect(0, 0, image.cols, image.rows/2)).clone();
Mat image_temp2 = image(Rect(0, image.rows/2, image.cols, image.rows/2)).clone();

然后我必须独立更改每个部分，最后合并为一个。我不知道如何正确地做到这一点。如何将图像的这两个部分合并为一个图像？

示例： http ：//i.stack.imgur.com/CLDK7.jpg

Then I have to change each part independently and finally to merge into one. I have no idea how to make this correctly. How I should merge this 2 parts of image into one image?
Example: http://i.stack.imgur.com/CLDK7.jpg

推荐答案

有几种方法可以做到这一点，但我发现的最好方法是使用 cv :: hconcat（mat1，mat2，dst）进行水平合并或 cv :: vconcat（mat1 ，mat2，dst）（垂直）。

There is several way to do this, but the best way I found is to use cv::hconcat(mat1, mat2, dst) for horizontal merge orcv::vconcat(mat1, mat2, dst) for vertical.

别忘了照顾空矩阵合并的情况！

Don't forget to take care of empty matrix merge case !

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