Bilateral filter

Bilateral filter

A bilateral filter is an edge-preserving filter useful for imaging. Whereas many filters are convolutions in the image domain, a bilateral filter also operates in the image's range -- pixel values. Rather than replace a pixel's value with simply a weighted average of its neighbors, a pixel's value is replaced by a weighted average of its neighbors in "x", "y", and intensity. This preserves sharp edges by systematically excluding pixels from the other side of the discontinuity.

External links

* [http://people.csail.mit.edu/sparis/bf_course/ A Gentle Introduction to Bilateral Filtering and its Applications] , SIGGRAPH 2007 course by Sylvain Paris.
* [http://homepages.inf.ed.ac.uk/rbf/CVonline/LOCAL_COPIES/MANDUCHI1/Bilateral_Filtering.html Bilateral Filtering]
* [http://scien.stanford.edu/class/psych221/projects/06/imagescaling/bilati.html Bilateral Filtering Introduction]


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