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ISCAS
1999
IEEE

Vector median-rational hybrid filters for multichannel image processing

13 years 8 months ago
Vector median-rational hybrid filters for multichannel image processing
In this letter, a new class of nonlinear filters called vector median-rational hybrid filters (VMRHF's) for multispectral image processing is introduced and applied to the color image filtering problem. These filters are based on rational functions (RF's) offering a number of advantages. First, a rational function is a universal approximator and a good extrapolator. Second, it can be trained by a linear adaptive algorithm. Third, it produces the best approximation (w.r.t. a given cost function) for some specific functions. The output is the result of a vector rational operation over the output of three subfilters, such as two vector median (VM) subfilters and one center weighted vector median filter (CWVMF). These filters exhibit desirable properties, such as edge and details preservation and accurate chromaticity estimation.
Lazhar Khriji, Moncef Gabbouj
Added 03 Aug 2010
Updated 03 Aug 2010
Type Conference
Year 1999
Where ISCAS
Authors Lazhar Khriji, Moncef Gabbouj
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