Title :
Bias correction and speckle reduction in time-space filtering of multi-temporal SAR images
Author :
Coltuc, D. ; Trouvé, E. ; Bolon, Ph
Author_Institution :
Dept. of Appl. Electron., Univ. "Politehnica", Bucharest, Romania
Abstract :
This paper extends the work on time-space filtering of multi-temporal SAR images presented in Coltuc et al. (2000), by providing theoretical support for bias correction and noise reduction evaluation. The bias value and a lower bound of the coefficient of variation for the residual noise are derived from the speckle probability density function. Theoretical results are compared with experimental measures obtained on multi-temporal SAR images from satellites ERS 1/2
Keywords :
digital filters; noise; radar imaging; remote sensing by radar; spaceborne radar; speckle; synthetic aperture radar; bia correction; multi-temporal SAR images; noise reduction evaluation; residual noise; speckle probability density function; speckle reduction; time-space filtering; Additive noise; Discrete cosine transforms; Filtering; Filters; Frequency; Image reconstruction; Noise reduction; Radar imaging; Reflectivity; Speckle;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2001. IGARSS '01. IEEE 2001 International
Conference_Location :
Sydney, NSW
Print_ISBN :
0-7803-7031-7
DOI :
10.1109/IGARSS.2001.978110
