import cv2 as cv import numpy as np def extrace_object_demo(): capture = cv.VideoCapture("C:/Users/weiqiangwen/Desktop/sest/QQ视频_2703CD4E8BBCC4F5B071A7A61FA35AB7.mp4") #在读取时有可能出现ret=false用播放器打开一次视频就好了。应该是转码问题 while(True): ret,frame = capture.read() print (ret) print (frame) if ret == False: break; hsv = cv.cvtColor(frame, cv.COLOR_BGR2HSV) ##转成hsv码 lower_hsv = np.array([37, 43, 46]) ##绿色最低值 upper_hsv = np.array([77, 255, 255]) ##绿色最高值 mask=cv.inRange(hsv,lowerb=lower_hsv,upperb=upper_hsv) ##得到二值图像 cv.imshow("video",frame) cv.imshow("masl",mask) c = cv.waitKey(40) if c ==27: ##27位退出 break; def color_space_demo(image): gray = cv.cvtColor(image, cv.COLOR_BGR2GRAY) cv.imshow("gray", gray) hsv = cv.cvtColor(image, cv.COLOR_BGR2HSV) cv.imshow("hsv", hsv) yuv = cv.cvtColor(image, cv.COLOR_BGR2YUV) cv.imshow("yuv", yuv) Ycrcb = cv.cvtColor(image, cv.COLOR_BGR2YCrCb) cv.imshow("ycrcb", Ycrcb) print("--------- Hello Python ---------") src = cv.imread("C:/Users/weiqiangwen/Desktop/sest/morph02.png") cv.namedWindow("input image", cv.WINDOW_AUTOSIZE) cv.imshow("input image", src) color_space_demo(src) b,g,r =cv.split(src) ##rgb分离 cv.imshow("blue",b) cv.imshow("green",g) cv.imshow("red",r) src= cv.merge([b,g,r]) ##3通道合并 cv.imshow("merg",src) extrace_object_demo() cv.waitKey(0) cv.destroyAllWindows()
opcv第二天视频文件打开及色彩分离合并
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转载自blog.csdn.net/qq_32340685/article/details/83314000
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