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학술지 Automated Georegistration of High-Resolution Satellite Imagery Using a RPC Model with Airborne LiDAR Information
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저자
오재홍, 이창노, 어양담, James Bethel
발행일
201210
출처
Photogrammetric Engineering and Remote Sensing, v.78 no.10, pp.1045-1056
ISSN
0099-1112
출판사
AMER SOC PHOTOGRAMMETRY
DOI
https://dx.doi.org/10.14358/PERS.78.10.1045
협약과제
11GC1100, u-GIS 핵심 융,복합 기술 개발, 김경옥
초록
A large amount high-resolution satellite imagery (HRSI) has been available in the commercial market because of its value in creating accurate base maps for various applications. As massive amounts of HRSI are acquired globally by satellites with short revisit times, automated but accurate georegistration is still required despite advances in precise orbit tracking and estimation. Motivated by the attractive properties of airborne lidar data, such as their high resolution and accuracy, this study proposes a new automated method for refining the HRSI with rational polynomial coefficients (RPCs) using airborne lidar information. By projecting the lidar intensity return into the HRSI space, the image matching complexity is reduced to a simple, 2D case. The true challenge is in overcoming the difference between the HRSI and the lidar intensity return to allow for reliable matching. To this end, this paper proposes a new method based on simple relative edge cross correlation (RECC) with a screening method to prevent false matching. To make the approach more robust, data snooping was added for a final detection of outliers. Experiments were performed using three Kompsat-2 images and the potential of the approach was confirmed, showing sub-pixel accuracy. © 2012 American Society for Photogrammetry and Remote Sensing.
KSP 제안 키워드
Airborne LiDAR, Automated method, Cross-Correlation, High-resolution satellite imagery, Image Matching, Intensity return, KOMPSAT-2, LiDAR intensity, Lidar data, Rational polynomial coefficients, Remote sensing(RS)