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Subject: Re: [Boost-users] Does anyone know how to detect image offset?
From: Falco Hirschenberger (hirsch_at_[hidden])
Date: 2009-06-09 05:56:06

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In reply to: blp330: "[Boost-users] Does anyone know how to detect image offset?"

You can find the offset with subpixel accuracy (useful when you have
antialiased or interpolated images) by using Phase correlation.

http://en.wikipedia.org/wiki/Phase_correlation

You have to apply 3 FFTs, which makes it rather computationally expensive,
but the method is very stable to noise.

Greetings, Falco

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