python鐢熸垚jpg_python灏唒ng鍥剧墖杞负jpg?

import cv2

imgpath = "./0.png"#图片路径
saveimg = r"./0.bgr"转化为bgr后要保存的路径

img = cv2.imread(imgpath)
save_img_size = 416

if img is None:
    print("img is none")
else:
    img = cv2.resize(img, (save_img_size, save_img_size))
    (B, G, R) = cv2.split(img)
    with open(saveimg, 'wb') as fp:
        for i in range(save_img_size):
            for j in range(save_img_size):
                fp.write(B[i, j])
        for i in range(save_img_size):
            for j in range(save_img_size):
                fp.write(G[i, j])
        for i in range(save_img_size):
            for j in range(save_img_size):
                fp.write(R[i, j])

    print("save success")