Comparative Analysis of Speckle Noise Reduction of SAR Image
LI Sheng-cai · Beijing Surveying and Mapping · 2011
Speckle,appearing in synthetic aperture radar(SAR) images as granular noise,is generated by the coherent processing of radar signals.It severely affects the image qualities.To alleviate deleterious effects of speckle,various ways have been devised to suppress it.this paper investigates the problem of speckle suppression comprehensively and thoroughly.It describes the general approaches of speckle reduction filtering,discusses several well-known speckle reduction filter,and compares the algorithms qualitatively.We can conclude that it is difficult to smooth speckle and preserve edge at same time by single filter.