regarding center-surround filter

asked 2015-04-21 05:15:54 -0600

RB gravatar image

updated 2015-04-21 05:16:16 -0600

I am trying to learn and implement the center-surround filter used in image anlysis and processing. of course i made research but the litratures i read offered explanation which still not clear and lacks clariy of te most of that filter's aspects, such as,

1-the min and max raduis f the cener in pixels

2-the min and the max radius of he surround in pixels

3-whether shoud be an over lap or not,

4-how to calculate he surround? questions like that..

kindly please provide a peseudo code or clear explanation of that filter used in image processin.

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Google is your god with problems like this, just look here. Basically you take two Gaussian Kernels and subtract them from each other. The resulting filter is used for filter purposes like whitening. It is also known as the difference of Gaussians approach.

StevenPuttemans gravatar imageStevenPuttemans ( 2015-04-21 06:13:18 -0600 )edit

thanks, bu the problem the research given to introducd this filter as center surround and i downaded and read many paper a n the explained nor mentioed the name DoG.thankx

RB gravatar imageRB ( 2015-04-21 06:59:32 -0600 )edit