Title :
Automatic segmentation of multiple VHF-band SAR images to improve stem volume retrieval
Author :
Folkesson, Klas ; Smith, Gary ; Ulander, Lars M H
Author_Institution :
Dept. of Radio & Space Sci., Chalmers Univ. of Technol., Goteborg
Abstract :
Ground slope effects have been identified as a limiting factor for stem volume retrieval from VHF-band SAR images since the ground-trunk dihedral scattering, which dominates the measured signal, is highly affected by surface relief and slope. To mitigate this problem coregistered SAR images from different flight headings have been acquired. These images are segmented to find regions with homogenous backscatter amplitude that are used with additional topography data to correct for the ground slope
Keywords :
geophysical signal processing; image processing; radar cross-sections; remote sensing by radar; synthetic aperture radar; terrain mapping; topography (Earth); automatic segmentation; coregistered SAR images; flight heading; ground slope effect; ground-trunk dihedral scattering; homogenous backscatter amplitude; multiple VHF-band SAR images; stem volume retrieval; surface relief/slope; synthetic aperture radar; topography data; Backscatter; Image retrieval; Image segmentation; Laser radar; Optical scattering; Radar scattering; Remote sensing; Space technology; Surfaces; Volume measurement;
Conference_Titel :
Geoscience and Remote Sensing Symposium, 2004. IGARSS '04. Proceedings. 2004 IEEE International
Conference_Location :
Anchorage, AK
Print_ISBN :
0-7803-8742-2
DOI :
10.1109/IGARSS.2004.1369078
