写代码计算三张图片的PSNR、SSIM、NIQE

好的，我可以帮你编写一段Python代码计算三张图片的PSNR、SSIM、NIQE。不过在此之前，需要先安装一些必要的Python库，可以使用以下命令进行安装：

pip install opencv-python
pip install scikit-image
pip install niqe

安装完成后，你可以使用以下代码进行计算。假设三张图片分别为img1.jpg、img2.jpg和img3.jpg，代码如下：

import cv2
from skimage.measure import compare_psnr, compare_ssim
from niqe import niqe

# 读取三张图片
img1 = cv2.imread('img1.jpg')
img2 = cv2.imread('img2.jpg')
img3 = cv2.imread('img3.jpg')

# 计算PSNR
psnr1 = compare_psnr(img1, img2)
psnr2 = compare_psnr(img1, img3)
psnr3 = compare_psnr(img2, img3)

# 计算SSIM
ssim1 = compare_ssim(img1, img2, multichannel=True)
ssim2 = compare_ssim(img1, img3, multichannel=True)
ssim3 = compare_ssim(img2, img3, multichannel=True)

# 计算NIQE
niqe1 = niqe(img1)
niqe2 = niqe(img2)
niqe3 = niqe(img3)

# 输出结果
print('PSNR1:', psnr1, 'PSNR2:', psnr2, 'PSNR3:', psnr3)
print('SSIM1:', ssim1, 'SSIM2:', ssim2, 'SSIM3:', ssim3)
print('NIQE1:', niqe1, 'NIQE2:', niqe2, 'NIQE3:', niqe3)

这段代码会输出每张图片的PSNR、SSIM和NIQE值。注意，这里的PSNR和SSIM值越高越好，NIQE值越低越好。