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image-processing
Johnny
Johnny

Reputation: 1

Band-pass convolution/diff of Gaussians filter

The paper I am reading calls for the use of a band-pass convolution that is performed using a difference of Gaussians filter. How does this image processing operation work?

Upvotes: 0

Views: 1295

Answers (1)

michid
michid

Reputation: 10824

This probably refers to a difference of Gaussians filter. See http://en.wikipedia.org/wiki/Difference_of_Gaussians

In signal processing a filtering is described as the convolution of the original signal with a filter kernel. This is equivalent to transforming signal and filter to the frequency domain, multiply there and transform them back to the spatial domain afterward.

Upvotes: 1

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