Based on the features of glint and clutter sea-sky blending background as well as point target with one pixel,a fast location algorithm for sea-sky blending area and an extended median-mean filter for all direction ring-neighborhood difference data based on pattern classification were designed as pre-processing methods.

Based on the rank of the sum of 1-norm distances or 2-norm distances from one pixel to the other pixels in the filtering window and combining with an average filter, a vector median filter for color images was developed.

To realise automatic processing,images were processed orderly via color space transform,splitting and merging,region color unification,mathematical morphology and weight vector median filter in this design.

Optimum design of weighted median filters based on genetic algorithms;

Effective adaptive weighted median filter algorithm

The main characters of this dissertation are as follows:(1)Traditional weighted median filter model is formed based on single dimension signal processing.

An algorithm called adaptive weighted median filter algorithm based on similarity function is proposed by the writer of this article.