The Definitive Shroud of Turin FAQ

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What is the effect of banding on the face?

A mathematical process, fast Fourier transform (FFT), can be used to detect background banding and minimize its effect in an image. Notice how, in the photograph on the right, FFT filtering seems to change the shape of the face and nose. It also makes the eyes look more normal. The hair is less forward. It doesn't actually change the shape of the face; it merely minimizes background noise so details can emerge.

Face from the Shroud of Turin with the effects of banding Face from the Shroud of Turin with banding minimized
Face as we normally see it Face with the effects of banding minimized

 

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