Adaptive Speckle Filtering For SAR Images

ABSTRACl The radiometric and textural information is fundamental for areas discrimination. In the presence of speckle, both the two aspects are degraded which makes areas discrimination more difficult. The ideal filter must smooth the noise without eliminating radiometric and textural information. Many filters are developed for speckle reduction. In t his paper, the most known adaptive filters are reconsidered and optimised. A new generalized adaptive filter is developed which can be adapted to preserve any kind of information characterized by the appropriate index. The filters are tested on a 4 Look SAR 580 image.