image with lower psnr , appearing visually good

[nanmehta]

No description provided.

[nanmehta]

can u please tell me the reason, though esrgan has good results visually, but the psnr is low as compaired to psnr results

[peteryuX]

Hey, @nan-rock. Higher PSNR dose not mean better visual quality but fidelity.

[nanmehta]

okay .. and thanks for the code

[nanmehta]

hey,i need your help. when i am using imresize_np() to generte set 14 low resolution images, my images are getting distorted.
this is my code
`path="D:/SR_testing_datasets/Set14"
savepath="d:"
for img_name in os.listdir(path):
raw_img = cv2.imread(os.path.join(path, img_name))
shape=raw_img.shape
#print(shape)
new_image=imresize_np(raw_img, (2)).astype(np.uint8)
#print("new",new_image.shape)

            #new_image=tf.image.resize( raw_img, [shape[0]+1,shape[1]+1], method ='bilinear'4
            result_img_path = os.path.join(savepath,img_name)
            #print(  result_img_path)
            #print(result_img_path)
            #print(os.listdir(result_img_path))
            a=cv2.imwrite(result_img_path, new_image)
            print(a)  `

[peteryuX]

Try np.clip() value to 0 - 255 before astype to uint8

[nanmehta]

thanks a lot sir.
wish u good luck.

[nanmehta]

hello sir, is the result evaluated on y channel or RGB