批量修改像素并保存

from PIL import Image
import numpy as np
import cv2
import os



path = r'8wei1\'
save_path = r'8wei2\'
for i in os.listdir(path):
    img = np.array(Image.open(path+i))
    for a in range(966):     #图片大小
        for j in range(1296):
            if img[a][j] == 106:   #需要修改的原像素值
                img[a][j] = 1
            if img[a][j] == 180:
                img[a][j] = 2
    # img = Image.fromarray(img)  # *255
    # img.save(save_path+i)
    print(i)
    cv2.imwrite(os.path.join(save_path , i),img)