A new edge preserving wavelet filtering is proposed and it is applied to real SAR images that are generally affected by a multiplicative noise, called speckle, which degrades the quality of these images. The new approach attempts to look for the neighborhood area in the detail images of a wavelet decomposition, that identifies homogeneous areas and edge information by using masks in order to reduce speckle while edges are preserved The improved filtering method uses the Nagao and Matsuyama and Tomita and Tsuji masks to detect edge locations in wavelet subspaces. The information provided by the masks is used to distinguish which of the detail coefficients, are to be shrunk.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Edge preserving wavelet speckle filtering


    Contributors:


    Publication date :

    2002-01-01


    Size :

    279402 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    Edge Preserving Wavelet Speckle Filtering

    Medeiros, F. N. S. / Mascarenhas, N. D. A. / Marques, R. C. P. et al. | British Library Conference Proceedings | 2002


    Using wavelet for filtering speckle and extracting edge from ocean SAR image [4550-46]

    Guo, Z. / Lu, G. | British Library Conference Proceedings | 2001


    Image Enhancement by Edge-preserving Filtering

    Wong, Y.-F. / IEEE; Signal Processing Society | British Library Conference Proceedings | 1994


    Phase-preserving speckle reduction based on soft thresholding in quaternion wavelet domain

    Liu, Y. / Jin, J. / Wang, Q. et al. | British Library Online Contents | 2012


    Saddle-Node Dynamics for Edge-Preserving and Scale-Space Filtering

    Wong, Y.-F. / IEEE; Signal Processing Society | British Library Conference Proceedings | 1994