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Compare grayscale pictures with SSIM and CW-SSIM #42

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Hs-Cheng opened this issue Jan 19, 2023 · 0 comments
Open

Compare grayscale pictures with SSIM and CW-SSIM #42

Hs-Cheng opened this issue Jan 19, 2023 · 0 comments

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@Hs-Cheng
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Hs-Cheng commented Jan 19, 2023 •
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Hi,

I would like to ask several questions related to SSIM and pyssim.

  1. Can I use SSIM to compare the similarity of two gray scale pictures?
  2. When I compared the following two pictures (please see the attached pictures), SSIM gave me a score of 0.95. However, CW-SSIM only gave me 0.44. I am confused. Could you please try to explain what made the scores differ so much? I would like to ask why I can get a high score with SSIM but a low score with CW-SSIM.

Thank you very much for your assistance.

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