图像resize

import cv2
import os

# 读取函数，用来读取文件夹中的所有函数，输入参数是文件名
def read_directory(directory_name):
    for filename in os.listdir(directory_name):
        print(filename)
        if "DS_Store" in filename:
            continue
        img = cv2.imread(directory_name + "/" + filename)
        img = cv2.resize(img,(512,512))
        filename = directory_name + "/" + filename
        cv2.imwrite(filename,img)
        # cv2.imshow(filename, img)
        # cv2.waitKey(0)

read_directory("./nolight")