Title :
Multi-Temporal Polarimetric SAR and Optical Data Fusion for Land Cover Mapping in Southwest China
Author :
Xu, Maosong ; Xia, Zhongsheng ; Zhang, Fengli ; Li, Kun ; Xie, Chou
Author_Institution :
Acad. of Forestry Inventory, Planning & Designing, State Forestry Adm. (SFA), Beijing, China
Abstract :
Zhazuo area located in Guizhou Province of southwest China was selected as the test site of this study. Based on six polarimetric RADARSAT-2 images, this paper presents the analysis on polarimetric and temporal variation backscattering behavior of typical targets such as residential areas, farmlands, forests and water bodies within the test site. The multi-temporal polarimetric SAR data fusion, as well as SAR and optical data fusion was conducted to improve the land cover classification. The analysis shows that there are significant differences of polarimetric backscattering and temporal variation behavior among different land cover types. The fusion of the multi-temporal polarimetric SAR data highlights the significant reduction of speckle noises, better land cover discrimination and improved visual appearance of SAR image. The fusion of SAR images with QuickBird data efficiently improves the land cover classification. This study demonstrates that high-precision land cover thematic mapping with SAR data in combination with optical remote sensing image in cloudy and rainy areas is feasible.
Keywords :
geophysical image processing; image classification; radar polarimetry; remote sensing by radar; sensor fusion; synthetic aperture radar; terrain mapping; Guizhou province; QuickBird data; Zhazuo area; data fusion; farmlands; forests; land cover classification; land cover mapping; multitemporal polarimetric SAR data; optical data; optical remote sensing image; polarimetric RADARSAT-2 images; polarimetric backscattering; residential areas; southwest China; temporal variation backscattering behavior; water bodies; Adaptive optics; Backscatter; Optical imaging; Optical polarization; Optical sensors; Remote sensing; Visualization;
Conference_Titel :
Multimedia Technology (ICMT), 2010 International Conference on
Conference_Location :
Ningbo
Print_ISBN :
978-1-4244-7871-2
DOI :
10.1109/ICMULT.2010.5631333