Telecommunications and Radio Engineering

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Robust Detail Preserving Image Filter by Means of Use of DSP TMS320C6701

Francisco Javier Gallegos-Funes, M.Sc., Ph.D.
National Polytechnic Institute of Mexico, Mexico

Vladimir Il'ich Ponomarev
State Airspace University (Kharkov Aviation Institute), Ukraine; and National Polytechnic Institute, Mexico

Victor Filippovich Kravchenko
Institute of Radio Engineering and Electronics, Russian Academy of Sciences, Moscow, Russia

Luis Nino-de-Rivera, Dr. Sci.
SEPI ESIME Culhuacan, National Polytechnic Institute (IPN), Av. Santa Ana No. 1000, C.P. 04430 Mexico D.F. MEXICO

ABSTRACT

In this paper, we present a robust filtering algorithm for image processing that provides preservation of fine details, impulsive noise removal and multiplicative noise suppression by means of use of DSP TMS320C6701. The designed filter is the consequential connection of two filters. The first filter (RM-KNN type) realizes the preservation of fine details by means of the use of the redescending M-estimators combined with the Wilcoxon estimator to provide impulsive noise rejection. The second filter (M type) uses the first filter to provide multiplicative noise suppression. Finally, the outputs of these filters are mixed similarly to the Lee filter. The proposed filter demonstrated excellent fine detail preservation and noise removal ability.