import cv2 
import matplotlib.pyplot as plt
import numpy as np

def show(image):
    plt.imshow(image)
    plt.axis('off')
    plt.show()

def imread(image):
    image = cv2.imread(image)
    image = cv2.cvtColor(image,cv2.COLOR_BGR2RGB)
    return image

import os
import imghdr

imgType_list = {'jpg','bmp','png','jpeg','rgb','tif'}

def resize_img(path):
    directory = path+'/new'
    if not os.path.exists(directory):
        os.makedirs(directory)
    for file in os.listdir(path):
        file_path = os.path.join(path, file)
        if file.endswith(".jpg"):
            image = imread(file_path)
            img_rs = cv2.resize(image, (0, 0), fx=0.25, fy=0.25, interpolation=cv2.INTER_AREA)
            img_rs = cv2.cvtColor(img_rs,cv2.COLOR_BGR2RGB)
            print(img_rs.shape)
            cv2.imwrite(path+'/new/'+file,img_rs,[int(cv2.IMWRITE_JPEG_QUALITY),100])
            #show(img_rs)
    print('缩小1/4完成')