我正在尝试使用OpenCV 2.1将两张图片合并成一张,并将它们相邻放置。在Python中,我正在执行以下操作:
import numpy as np, cv
img1 = cv.LoadImage(fn1, 0)
img2 = cv.LoadImage(fn2, 0)
h1, w1 = img1.height,img1.width
h2, w2 = img2.height,img2.width
# Create an array big enough to hold both images next to each other.
vis = np.zeros((max(h1, h2), w1+w2), np.float32)
mat1 = cv.CreateMat(img1.height,img1.width, cv.CV_32FC1)
cv.Convert( img1, mat1 )
mat2 = cv.CreateMat(img2.height, img2.width, cv.CV_32FC1)
cv.Convert( img2, mat2 )
# Copy both images into the composite image.
vis[:h1, :w1] = mat1
vis[:h2, w1:w1+w2] = mat2
h,w = vis.shape
vis2 = cv.CreateMat(h, w, cv.CV_32FC3)
vis0 = cv.fromarray(vis)
cv.CvtColor(vis0, vis2, cv.CV_GRAY2BGR)
cv.ShowImage('test', vis2)
cv.WaitKey()
两个输入图像分别为:
https://code.ros.org/trac/opencv/browser/trunk/opencv/samples/c/box.png?rev=2270
https://code.ros.org/trac/opencv/browser/trunk/opencv/samples/c/box_in_scene.png?rev=2270
生成的图像为:
尽管大部分图像是白色的,与网站的其他部分难以区分,但这些白色区域对应的是各个图像应该出现的位置。黑色区域则表示没有写入任何图像数据。
为什么我的所有图像数据都转换成了白色?
cv2.vconcat()
和cv2.hconcat()
,参见这里:https://dev59.com/fWUq5IYBdhLWcg3wV_Ai#72177160 - Jeru Luke