python crop图片 && 将灰度图或者彩图转成二进制文件

import cv2 import numpy as np img = cv2.imread("140_pre_img.jpg", cv2.IMREAD_GRAYSCALE) region = img[284:335, 448: 520] cv2.imwrite('2.jpg', region) region.tofile(open("1.BIN", 'wb')) ------------------------------------------------------------------------------------- import cv2 import numpy as np x = cv2.imread("lane.jpg") x.tofile(open("1.BIN", 'wb'))