GCPs selection from multi-source data over mountainous topography

Author

Toutin, Thierry ; Hoja, Daniele ; Hoeppner, Erik ; Remond, A. ; King, Christine

Author_Institution

Canada Centre for Remote Sensing, Ottawa, Ont., Canada

Volume

5

fYear

1998

fDate

6-10 Jul 1998

Firstpage

2339

Abstract

GCP selection in mountainous relief is a difficult process. This paper shows methods using topographic, SAR and visible image data to define ridge points as GCPs. The SAR layover and shadow boundaries method is the best method but it depends of the back and fore slopes versus the look angle. Using SPOT ortho-images the results depend mainly on the visibility of the feature between the SAR and visible images. Simulated SAR is not a good solution since the DEM induces too large planimetric errors

Keywords

geophysical signal processing; geophysical techniques; image registration; radar imaging; remote sensing; remote sensing by radar; synthetic aperture radar; terrain mapping; GCP; SAR; SPOT ortho-image; geophysical measurement technique; ground control point selection; image registration; land surface; layover and shadow boundaries method; mountain; mountainous relief; mountainous topography; multi-source data; optical imaging; photogrammetry; radar remote sensing; ridge point; synthetic aperture radar; terrain mapping; Digital elevation models; Geometry; Image converters; Image sensors; Lighting; Pixel; Radar imaging; Radiometry; Remote sensing; Surfaces;

fLanguage

English

Publisher

ieee

Conference_Titel

Geoscience and Remote Sensing Symposium Proceedings, 1998. IGARSS '98. 1998 IEEE International

Conference_Location

Seattle, WA

Print_ISBN

0-7803-4403-0

Type

conf

DOI

10.1109/IGARSS.1998.702206

Filename

702206