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OpenCV(Python)基礎 | 跟踪(指定/遮罩)視頻(圖片/相片)中指定顏色 ~ inRange 資料來源: https://mp.weixin.qq.com/s?__biz=MzIwMDU3MDkzNg==&mid=2651312492&idx=1&sn=1a093dc53ee98940b39a7240de401324&chksm=8d08503bba7fd92dadf2d5d2eb57fb3ae35ffb157af450ff849a6e96fa7968d90a7f470a5132&scene=126&sessionid=1607388989&key=e420ad4ff565d51fbc143339165afd922b87f1bcd194e10ff1d91676a9d42592ed36a2c2d7ab8aef114b816ccd7acc2d8374d9437b32cadfe3b6f963fdc30f91c14fbc067ec1e703aa19490353f7dccf1794271a2fe974298065bf88dcaedb0a778bf6c280d6eed99f829a34f32ae5cf37ba6eb1b19a7eb9a1b3a127213d7c4d&ascene=1&uin=MjIwODk2NDgxNw==&devicetype=Windows+10+x64&version=6300002f&lang=zh_TW&exportkey=AmHHv3ajukqYlxGP9h8yslw=&pass_ticket=0gGYf2c03M7ejUVfmjrIHgJkhrMGS61jg/gyZlOfGhQCljXh8cE4NsI+QGQbG5sm&wx_header=0 https://www.bilibili.com/video/BV1QW411F7e7?p=1 API: mask = cv2.inRange(hsv, lower, upper) hsv：rgb圖像轉換為hsv格式的圖像 lower：圖像中低於這個lower的值，圖像值變為0，即變為黑 upper：圖像中高於這個upper的值，圖像值變為0，即變為黑 在lower～upper之間的值變成255，即變為白 inRange用於實現圖片的二值化 code: # 可从视频中跟踪指定颜色，指定颜色置为白，其余置为黑 def extract_object_demo(): capture=cv.VideoCapture("./images/vtest.avi") while(True): ret,frame=capture.read() if ret ==False: break hsv=cv.cvtColor(frame,cv.COLOR_BGR2HSV) lower_hsv = np.array([35, 43, 46]) # 对应的绿色的hsv中h，s，v的最小值 upper_hsv = np.array([77, 255, 255]) #对应的绿色的hsv中的h，s，v最大值 mask=cv.inRange(hsv,lowerb=lower_hsv,upperb=upper_hsv) cv.imshow("video",frame) cv.imshow("mask",mask) c=cv.waitKey(40) if c==27: break