Title :
Nonlinear Non-Local Averaging for Image De-noising
Author :
Bilcu, Radu Ciprian ; Vehvilainen, Markku
Author_Institution :
Multimedia Technol. Lab., Nokia Res. Center, Visiokatu
Abstract :
The non-local (NL) averaging method for image de-noising was recently introduced. The method shows very good filtering properties for additive Gaussian distributed noise. However, the performances of the NL averaging method for non-Gaussian, especially impulsive, noise is not satisfactory. In this paper, we propose a novel filtering scheme, called nonlinear non-local (NLNL) averaging that has better performances in mixed (Gaussian and impulsive) noise environments. Experiments comparing the performances of the NL, NLNL and other related approach are presented
Keywords :
filtering theory; image denoising; filtering scheme; image denoising; nonlinear nonlocal averaging method; Additive noise; Digital cameras; Digital images; Filters; Gaussian noise; Image denoising; Mobile handsets; Noise reduction; Nonlinear distortion; Working environment noise;
Conference_Titel :
Signal Processing Symposium, 2006. NORSIG 2006. Proceedings of the 7th Nordic
Conference_Location :
Rejkjavik
Print_ISBN :
1-4244-0412-6
Electronic_ISBN :
1-4244-0413-4
DOI :
10.1109/NORSIG.2006.275284
