import cv2
import numpy as np

num, num2, num3 = 150, 261, 800
font = {
    'family': 'Times New Roman',
    'weight': 'normal',
    'size': 20,
}

img_ori = cv2.imread('I:/result_pic/original/original%d.png' % (num))
img_con = cv2.imread('I:/result_pic/container/container%d.png' % (num))
img_sec = cv2.imread('I:/result_pic/secret/secret%d.png' % (num))

err = cv2.absdiff(img_ori, img_con)     #差值的绝对值

import matplotlib.pyplot as plt
fig = plt.figure('res_%d_%d_%d' % (num, num2, num3))
  #关闭坐标轴

plt.subplot(3, 6, 1)     #将窗口分为两行两列四个子图，则可显示四幅图片
plt.title('original', font)   #第一幅图片标题
plt.imshow(img_ori)
plt.axis('off')

plt.subplot(3, 6, 2)     #将窗口分为两行两列四个子图，则可显示四幅图片
plt.title('secret', font)   #第一幅图片标题
plt.imshow(img_sec)
plt.axis('off')

plt.subplot(3, 6, 3)
plt.title('container', font)
plt.imshow(img_con)
plt.axis('off')

plt.subplot(3, 6, 4)
plt.title('residual', font)
plt.imshow(err)
plt.axis('off')

plt.subplot(3, 6, 5)
plt.title('residualx10', font)
plt.imshow(err*10)
plt.axis('off')

plt.subplot(3, 6, 6)
plt.title('residualx20', font)
plt.imshow(err*20)
plt.axis('off')

##################

img_ori = cv2.imread('I:/result_pic/original/original%d.png' % (num2))
img_con = cv2.imread('I:/result_pic/container/container%d.png' % (num2))
img_sec = cv2.imread('I:/result_pic/secret/secret%d.png' % (num2))
err = cv2.absdiff(img_ori, img_con)

plt.subplot(3, 6, 7)     #将窗口分为两行两列四个子图，则可显示四幅图片
plt.imshow(img_ori)
plt.axis('off')

plt.subplot(3, 6, 8)     #将窗口分为两行两列四个子图，则可显示四幅图片
plt.imshow(img_sec)
plt.axis('off')

plt.subplot(3, 6, 9)
plt.imshow(img_con)
plt.axis('off')

plt.subplot(3, 6, 10)
plt.imshow(err)
plt.axis('off')

plt.subplot(3, 6, 11)
plt.imshow(err*10)
plt.axis('off')

plt.subplot(3, 6, 12)
plt.imshow(err*20)
plt.axis('off')

##################

img_ori = cv2.imread('I:/result_pic/original/original%d.png' % (num3))
img_con = cv2.imread('I:/result_pic/container/container%d.png' % (num3))
img_sec = cv2.imread('I:/result_pic/secret/secret%d.png' % (num3))
err = cv2.absdiff(img_ori, img_con)

plt.subplot(3, 6, 13)     #将窗口分为两行两列四个子图，则可显示四幅图片
plt.imshow(img_ori)
plt.axis('off')

plt.subplot(3, 6, 14)     #将窗口分为两行两列四个子图，则可显示四幅图片
plt.imshow(img_sec)
plt.axis('off')

plt.subplot(3, 6, 15)
plt.imshow(img_con)
plt.axis('off')

plt.subplot(3, 6, 16)
plt.imshow(err)
plt.axis('off')

plt.subplot(3, 6, 17)
plt.imshow(err*10)
plt.axis('off')

plt.subplot(3, 6, 18)
plt.imshow(err*20)
plt.axis('off')



fig.tight_layout()#调整整体空白
plt.subplots_adjust(wspace=0.1)#调整子图间距
plt.show()   #显示