Adaptive speckle filters and scene heterogeneity Export

@article{citeulike:389043, abstract = {The presence of speckle in radar images makes the radiometric and textural aspects less efficient for class discrimination. Many adaptive filters have been developed for speckle reduction, the most well known of which are analyzed. It is shown that they are based on a test related to the local coefficient of variation of the observed image, which describes the scene heterogeneity. Some practical criteria are introduced to modify the filters in order to make them more efficient. The filters are tested on a simulated synthetic aperture radar (SAR) image and an SAR-580 image. As was expected, the new filters perform better, i.e. they average the homogeneous areas better and preserve texture information, edges, linear features, and point target responses better at the same time. Moreover, they can be adapted to features other than the coefficient of variation to reduce the speckle while preserving the corresponding information}, author = {Lopes, A. and Touzi, R. and Nezry, E.}, citeulike-article-id = {389043}, citeulike-linkout-0 = {http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=62623}, journal = {Geoscience and Remote Sensing, IEEE Transactions on}, keywords = {filter, sar, speckle}, number = {6}, pages = {992--1000}, posted-at = {2005-11-11 18:19:16}, priority = {5}, title = {Adaptive speckle filters and scene heterogeneity}, url = {http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=62623}, volume = {28}, year = {1990} }

TY - JOUR ID - citeulike:389043 L3 - citeulike-article-id:389043 N2 - The presence of speckle in radar images makes the radiometric and textural aspects less efficient for class discrimination. Many adaptive filters have been developed for speckle reduction, the most well known of which are analyzed. It is shown that they are based on a test related to the local coefficient of variation of the observed image, which describes the scene heterogeneity. Some practical criteria are introduced to modify the filters in order to make them more efficient. The filters are tested on a simulated synthetic aperture radar (SAR) image and an SAR-580 image. As was expected, the new filters perform better, i.e. they average the homogeneous areas better and preserve texture information, edges, linear features, and point target responses better at the same time. Moreover, they can be adapted to features other than the coefficient of variation to reduce the speckle while preserving the corresponding information IS - 6 JF - Geoscience and Remote Sensing, IEEE Transactions on EP - 1000 TI - Adaptive speckle filters and scene heterogeneity VL - 28 SP - 992 KW - filter KW - sar KW - speckle AU - Lopes, A AU - Touzi, R AU - Nezry, E PY - 1990/// UR - http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=62623 ER -