Facenet: What is the role of facenet.prewhiten

Created on 22 Aug 2017  路  2Comments  路  Source: davidsandberg/facenet

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

picture tonybaigang

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

picture davidsandberg on 21 Oct 2017
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It subtracts the average and normalizes the range of the pixel values of input images. It makes training a lot easier.

davidsandberg picture davidsandberg on 21 Oct 2017
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Is there a method to reverse the prewhiten-ing to reconstruct the original image?

frankxwang picture frankxwang on 29 Jun 2018
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