Application of Improved SRAD in SAR Image De-Speckling
Jin Ke-qiang · 2010
The existence of speckle noise has seriously affected the application of SAR Image,so it is particularly important to reduce speckle.Although Speckle Reducing Anisotropic Diffusion(SRAD) can remove speckle noise as well as preserve edge better,there is still some insufficient sections.On the basis of analyzing SRAD and with the idea of arithmetic of enhanced Lee,the SAR image has been divided in detail into three types of areas: homogeneous area,weak texture area and area with incomplete development noise.Different treatments were used in different types of areas and termination conditions were added into this arithmetic.The experiments have validated that the improved arithmetic have better effect in smoothing and better ability in edge preservation.