Ignite: Error with SSIM calculation?

Created on 20 Nov 2020  ยท  2Comments  ยท  Source: pytorch/ignite

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Hi!

Thank you for creating such a great library. I wanted to use SSIM metric calculation implemented in ignite. However, at first glance, the implementation lacks the s term calculation that can be found in the original paper. At this moment, l and c terms are used only. Can you clarify whether the implementation is wrong or if am I missing something?

Best regards
Kacper

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Most helpful comment

@vfdev-5 @ydcjeff My bad, there's a derivation in Eq. 13 in the paper that simplifies some terms and leads to the already implemented equation. Sorry for raising the alarm unnecessarily.

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@ydcjeff could you please take a look ?

@vfdev-5 @ydcjeff My bad, there's a derivation in Eq. 13 in the paper that simplifies some terms and leads to the already implemented equation. Sorry for raising the alarm unnecessarily.

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