Dr. Niangang Jiao Profile

Dr. Niangang Jiao

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Proceedings Article | 21 June 2024 Paper

Analysis of the fluence of multi-sources DEM in remote sensing image ortho-rectification

Rui Liu, Jingxing Zhu, Niangang Jiao, Feng Wang, Hongjian You, Yuming Xiang

Proceedings Volume 13167, 1316705 (2024) https://doi.org/10.1117/12.3029617

KEYWORDS: Remote sensing, Image processing, Error analysis

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Digital Elevation Models (DEMs) depict the configuration of the Earth surface, which is essential for remote sensing image ortho-rectification. Nowadays, the ALOS DEM, ASTER GDEM and SRTM DEM are the most commonly used models, produced based on different remote sensing datasets. Geolocation errors may be introduced with different producing methods and datasets. Therefore, multi-sources remote sensing images covering various terrain in China are experimented for the analysis of ortho-rectification accuracy using different DEMs. Based on the rational function model, the geolocation error of original imagery can be reduced greatly with the grounds control points, and different DEMs are used for the ortho-rectification of different imagery. The accuracy is experimented and verified using high-precision reference images. Experimental results show that ortho-rectificated images with the ALOS DEM can achieve better accuracy compared with the SRTM DEM and ASTER GDEM, which is significant for geometric processing of remote sensing images.

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