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What is the role of facenet.prewhiten #433

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tonybaigang opened this Issue Aug 22, 2017 · 2 comments

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@tonybaigang

tonybaigang commented Aug 22, 2017

I saw the code of compare.py and found the function prewhiten.
What is the role of facenet.prewhiten?

@davidsandberg

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davidsandberg commented Oct 21, 2017

It subtracts the average and normalizes the range of the pixel values of input images. It makes training a lot easier.

@frankxwang

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frankxwang commented Jun 28, 2018

Is there a method to reverse the prewhiten-ing to reconstruct the original image?

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