使用opencv是否可以在同一窗口上显示黑白和彩色图像? [英] Is it possible to have black and white and color image on same window by using opencv?

问题描述

是否可以使用 opencv 库在同一窗口上显示黑白和彩色图像?如何在同一个窗口中同时显示这两个图像?

Is it possible to have black-and-white and color image on same window by using opencv libraray? How can I have both of these images on same window?

推荐答案

是的，这里有一个例子，在评论中说明:

Yes it is, here is an example, expaination in the comments:

import cv
#open color and b/w images
im = cv.LoadImageM('1_tree_small.jpg')
im2 = cv.LoadImageM('1_tree_small.jpg',cv.CV_LOAD_IMAGE_GRAYSCALE)
#set up our output and b/w in rgb space arrays:
bw = cv.CreateImage((im.width,im.height), cv.IPL_DEPTH_8U, 3)
new = cv.CreateImage((im.width*2,im.height), cv.IPL_DEPTH_8U, 3)
#create a b/w image in rgb space
cv.Merge(im2, im2, im2, None, bw)
#set up and add the color image to the left half of our output image
cv.SetImageROI(new, (0,0,im.width,im.height))
cv.Add(new, im, new)
#set up and add the b/w image to the right half of output image
cv.SetImageROI(new, (im.width,0,im.width,im.height))
cv.Add(new, bw, new)
cv.ResetImageROI(new)
cv.ShowImage('double', new)
cv.SaveImage('double.jpg', new)
cv.WaitKey(0)

它在 python 中，但很容易转换成任何东西..

Its in python, but easy to convert to whatever..

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