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4/28/20081Spatial filtering fundamentalsSpring 2008ELEN 4304/5365 DIP1by Gleb V. Tcheslavski: [email protected]Mechanics of spatial filteringConsidering frequency domain filtering, the effect of LPF applied to an image is to blur (smooth) it. Similar smoothing effect can beto an image is to blur (smooth) it. Similar smoothing effect can be achieved by using spatial filters(spatial masks, kernels, templates,or windows).We discussed that a spatial filter consists of a neighborhoodand a pre-defined operationperformed on the image pixels defining the neighborhood. The result of filtering – a new pixel with coordinated of the neighborhood’s center and the value defined by the operation.Spring 2008ELEN 4304/5365 DIP2If the operation is linear, the filter is said to be a linear spatial filter.
has intentionally blurred sections.
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