Accurate Positioning of SPOT Image Using Aerial Sequence Imagery

Author

Ji, Shunping

Author_Institution

Sch. of Remote Sensing & Inf. Eng., Wuhan Univ., Wuhan, China

fYear

2010

fDate

23-25 Sept. 2010

Firstpage

1

Lastpage

4

Abstract

Propose a multi-source image matching method for SPOT 5 and aerial imagery after aero-triangulation to achieve accurate positioning of new SPOT images. Firstly, GCPs are extracted as matching points from GCP database constructed by aero-triangulation results. Secondly, the initial position of matching points on SPOT image is predicted based on original RPC parameters, and preliminary registration of aerial GCPs and SPOT image are achieved by block-by-block rectification. Thirdly cross-correlation matching strategy is carried out to get corresponding points. At last matching errors are eliminated using RANSAC algorithm, and accurate RPC parameters are obtained to achieve accurate positioning of SPOT. The experiments verified the method can automatically achieve precise positioning of SPOT-5 image with existing aerial triangulation results, and no outside work for GCPs is needed.

Keywords

correlation methods; feature extraction; geophysical image processing; image matching; random processes; GCP database; GCP extraction; RANSAC algorithm; RPC parameter; SPOT 5 image; SPOT image positioning; aerial imagery; aerial sequence imagery; aero-triangulation; block-by-block rectification; cross-correlation matching; multisource image matching; Accuracy; Computational modeling; Image matching; Image resolution; Pixel; Remote sensing; Satellites;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications Networking and Mobile Computing (WiCOM), 2010 6th International Conference on

Conference_Location

Chengdu

Print_ISBN

978-1-4244-3708-5

Electronic_ISBN

978-1-4244-3709-2

Type

conf

DOI

10.1109/WICOM.2010.5601004

Filename

5601004