python convert mat file to png

Took a lot of effort to do this, always got various errors, now it's finally resolved

from PIL import Image
import matplotlib.pyplot as plt
import glob
import os
import numpy as np
import mat73

# 数据矩阵转图片的函数
def MatrixToImage(data):
    data = data*255
    new_im = Image.fromarray(data.astype(np.uint8))
    return new_im

def mkdir(path):
    folder = os.path.exists(path)
    if not folder:  # 判断是否存在文件夹如果不存在则创建为文件夹
        os.makedirs(path)  # makedirs 创建文件时如果路径不存在会创建这个路径
        print("--- create new folder...  ---")
    else:
        print("---  There is this folder!  ---")

# Get all png files under the input folder
input_img_path = glob.glob("I:/CCCC--数据集/去噪/dnd_2017/input/*.mat")
save_path = "blur13x13/"


mkdir(save_path)  # 调用函数
i = 0

for file in input_img_path:
    file_name = file.split('\\')[-1]

    try:
        mat = mat73.loadmat(file)
        new_name = str(mat.keys())
        key_name = list(mat.keys())[-1]
        key_name = mat[key_name]
        print(key_name.shape)
        new_im = MatrixToImage(key_name)
        plt.imshow(key_name,  interpolation='nearest')
        new_im.save(save_path+'{}.png'.format(file_name))
    except Exception as e:
        pass

    i = i + 1
    print("The", i, "picture is currently being processed")
    continue

The complete code is as above, you only need to modify the input mat folder path~