cv2实现像素与jpg图片之间的转换

代码如下：

# -*- encoding: utf-8 -*-
import cv2
import numpy as np

path = './/face'
data = np.loadtxt('Data/data.csv')
print(data.shape)
for i in range(data.shape[0]):
    face_array = data[i, :].reshape((48, 48))
    cv2.imwrite(path + '//' + '{}.jpg'.format(i), face_array)