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From: Prathiba on 16 Apr 2010 09:44
This is an extract of the ieee paper which we are using as reference to our project:
" Extracting Motion Blur Correlation Properties:
Since the motion blur is usually one dimensional, its effect varies according to the direction in the blurred image relative to the motion direction. Since the PSF is varying in the motion direction, it is not correlated perpendicularly to the motion direction. Therefore a whitening filter implemented perpendicularly to the motion direction will not affect the PSF correlation properties. However, such a filter will significantly suppress correlation properties stemming from the original image,which is highly correlated in all directions. On the other hand, implementation of a whitening filter in the motion direction will have a different effect. The PSF has the same effect on all the image points. The points of the original image will become PSF patterns that merge into each other, forming the blurred image. A whitening derivative filter in this direction will form patterns similar to
that of the PSF derivative. Such a filter implemented in both directions will form such patterns surrounded by extremely suppressed decorrelated regions. Therefore these patterns can be evaluated by performing an autocorrelation operation on the blurred image derivative."

what is a whitening filter?? what is a whitening derivative filter???? how do you implement it??? what do they do???????

thanks a ton,in advance
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