树莓派python3+opencv调用usb摄像头显示和图像预处理并进行保存

camera.pypython #!/usr/bin/env python3 # -*- coding:utf-8 -*- import cv2 import numpy as np name = 0 cap = cv2.VideoCapture(0) cap.set(3,640) cap.set(4,480) ret, frame = cap.read() rows, cols, chan

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