1、調(diào)用攝像頭并錄制視頻

from cv2 import cv2 #捕獲攝像頭幀 cameraCapture = cv2.VideoCapture(0) fps = 30 size=(int(cameraCapture.get(cv2.CAP_PROP_FRAME_WIDTH)),int(cameraCapture.get(cv2.CAP_PROP_FRAME_HEIGHT))) videoWriter=cv2.VideoWriter('C:/Users/admin/Desktop/test/video/2.avi',cv2.VideoWriter_fourcc('X','V','I','D'),fps,size) success,frame = cameraCapture.read() numFrameRemaining = 10 * fps #攝像頭捕獲持續(xù)時(shí)間 while success and numFrameRemaining > 0:videoWriter.write(frame)success,frame = cameraCapture.read()numFrameRemaining -= 1 cameraCapture.release()

2、調(diào)用攝像頭，通過OpenCV窗口顯示畫面

from cv2 import cv2 #判斷窗口點(diǎn)擊事件 clicked = False def onMouse(event,x,y,flags,param):global clickedif event == cv2.EVENT_LBUTTONUP:clicked = True #捕獲序號(hào)為0的攝像頭 cameroCapture = cv2.VideoCapture(0) #創(chuàng)建窗口 cv2.namedWindow('window') #cv2.setMouseCallback('window',onMouse) #讀取幀 success,frame = cameroCapture.read() while success and cv2.waitKey(1) == -1:cv2.imshow('window',frame)success,frame = cameroCapture.read() cv2.destroyWindow('window') cameroCapture.release()

? ? ? ??由于OpenCV并沒有真正提供窗體事件監(jiān)聽，在程序運(yùn)行時(shí)無法通過點(diǎn)擊關(guān)閉窗口，可以通過鍵盤監(jiān)聽cv2.waitKey(1)來判斷，cv2.waitKey(1)=-1時(shí)為沒有輸入，即程序運(yùn)行時(shí)可以通過按下任意鍵結(jié)束運(yùn)行或終止調(diào)試。

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