A simple, efficient filter for multitemporal SAR images

Author: Gineste, P.

Source: International Journal of Remote Sensing, Volume 20, Number 13, 1999 , pp. 2565-2576(12)

Publisher: Taylor and Francis Ltd

Buy & download fulltext article:

OR

Price: $61.16 plus tax (Refund Policy)

Abstract:

It has been recently shown how multitemporal data may be used to improve the radiometric resolution of Synthetic Aperture Radar (SAR) images. Yet even the optimal speckle reduction schemes may result in blurred images in featured zones. Structure detection is a prior requirement but complicates further the numerical treatments. Alternatively, it is shown that satisfactory results can be obtained using a simple adaptation of Lee's sigma filter, as illustrated by comparison with theoretically based methods. The proposed methodology combines temporal filtering with a subwindowing approach and appears to be a good compromise that smoothes efficiently the speckle in relatively homogeneous areas while carefully preserving the sharpness of the edges. It may be of particular interest for those concerned with the variations in time of backscatter, especially in an agricultural environment.

Document Type: Research Article

DOI: http://dx.doi.org/10.1080/014311699211930

Publication date: September 10, 1999

More about this publication?
Related content

Key

Free Content
Free content
New Content
New content
Open Access Content
Open access content
Subscribed Content
Subscribed content
Free Trial Content
Free trial content

Text size:

A | A | A | A
Share this item with others: These icons link to social bookmarking sites where readers can share and discover new web pages. print icon Print this page