Fast non-local Lee filter for SAR image despeckling using directional projection

Author

Zhong, Hua ; Lu, Lu ; Jiao, Lc

Author_Institution

Key Lab. of Intell. Perception & Image Understanding of Minist. of Educ., Xidian Univ., Xi´´an, China

Volume

2

fYear

2011

fDate

24-27 Oct. 2011

Firstpage

1600

Lastpage

1603

Abstract

This paper combines the Lee filter with the non-local mean filter, and a new similarity measure is derived based on the statistics of speckle noise, which extended the non-local means from the additive noise to the multiplicative noise. Also directional projection is adopted to accelerate the process of similarity computation. The results show its effectiveness. Experimental results illustrate that the proposed method can effectively smooth the speckle while preserving the details with reduced complexity.

Keywords

filtering theory; image denoising; radar imaging; speckle; statistical analysis; synthetic aperture radar; Lee filter; SAR; additive noise; directional projection; image despeckling; multiplicative noise; non-local mean filter; similarity measure; speckle noise; statistics; Complexity theory; Information filters; Noise; Noise measurement; Speckle; Synthetic aperture radar; Lee Filter similarity measure directional projection; non-local means; synthetic aperture radar;

fLanguage

English

Publisher

ieee

Conference_Titel

Radar (Radar), 2011 IEEE CIE International Conference on

Conference_Location

Chengdu

Print_ISBN

978-1-4244-8444-7

Type

conf

DOI

10.1109/CIE-Radar.2011.6159870

Filename

6159870