Laplacian of gaussian filter use

Posted by maximus on Stack Overflow See other posts from Stack Overflow or by maximus
Published on 2010-03-30T13:01:56Z Indexed on 2010/03/30 13:33 UTC
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This is a formula for LoG filtering: alt text

Also in applications with LoG filtering I see that function is called with only one parameter: sigma(s). I want to try LoG filtering using that formula (previous attempt was by gaussian filter and then laplacian filter with some filter-window size ) But looking at that formula I can't understand how the size of filter is connected with this formula, does it mean that the filter size is fixed? Can you explain how to use it?

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