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Scaling robustness #25

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skinkie opened this issue Sep 1, 2021 · 1 comment
Open

Scaling robustness #25

skinkie opened this issue Sep 1, 2021 · 1 comment

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@skinkie
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skinkie commented Sep 1, 2021

When an input image is scale towards a different dimension (even remaining aspect ratio) the software is unable to extract the watermark. But when the image is scaled back to its original dimension (even being blurry) the watermark can be recovered. Would there be a way to be scale invariant? For example by using features such as SIFT/SURF/ORB as landmarks for embedding?
@3zhang
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3zhang commented Jun 17, 2022

Since you know the original dimension, you can scale back before extraction.

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@skinkie @3zhang