termuxpython打开摄像头-OpenCV-Python入门教程2-打开摄像头.pdf

termuxpython打开摄像头_OpenCV-Python⼊门教程2-打开摄 像头 ⼀、打开摄像头 import cv2 #打开摄像头并灰度化显⽰ capture =cv2.VideoCapture(0)while(True):#获取⼀帧 ret, frame =capture.read()#将这帧转换为灰度图 gray =cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY) cv2.imshow('frame', gray)#如果输⼊q，则退出 if cv2.waitKey(1) == ord('q'):break cv2.VideoCapture(0)创建VideoCapture对象，参数0表⽰摄像头编号，如果你有两个摄像头，也可以传⼊1 #获取捕获的分辨率#propId可以直接写数字，也可以⽤OpenCV的符号表⽰ width, height = capture.get(3), capture.get(4)print(width, height)#以原分辨率的⼀倍来捕获 capture.set(cv2.CAP_PROP_FRAME_WIDTH, wi