Title :
Maximum likelihood estimation of the number of looks in SAR images
Author :
Foucher, Samuel ; Boucher, Jean-Marc ; Bénie, Goze Bertin
Author_Institution :
Ecole Nat. Superieure des Telecommun. de Bretagne, Brest, France
Abstract :
The number of effective looks in a SAR image is an essential parameter for determining the speckle level in the image. In particular, it permits the evaluation of the speckle standard normalized deviation in the image. This value is at the center of the majority of speckle filtering techniques. We propose to use a maximum likelihood approach based on a method of functional density estimation in order to estimate this parameter
Keywords :
filtering theory; maximum likelihood estimation; radar imaging; radar theory; speckle; statistical analysis; synthetic aperture radar; SAR images; effective looks; functional density estimation; maximum likelihood estimation; parameter estimation; speckle filtering; speckle level; standard normalized deviation; Degradation; Filtering; Image resolution; Maximum likelihood detection; Maximum likelihood estimation; Parameter estimation; Radiometry; Scattering; Spatial resolution; Speckle;
Conference_Titel :
Microwaves, Radar and Wireless Communications. 2000. MIKON-2000. 13th International Conference on
Conference_Location :
Wroclaw
Print_ISBN :
83-906662-3-5
DOI :
10.1109/MIKON.2000.914020
