Articles | Volume 17, issue 12
https://doi.org/10.5194/tc-17-5299-2023
https://doi.org/10.5194/tc-17-5299-2023
Research article
 | 
14 Dec 2023
Research article |  | 14 Dec 2023

Co-registration and residual correction of digital elevation models: a comparative study

Tao Li, Yuanlin Hu, Bin Liu, Liming Jiang, Hansheng Wang, and Xiang Shen

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Latest update: 29 Jun 2024
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Short summary
Raw DEMs are often misaligned with each other due to georeferencing errors, and a co-registration process is required before DEM differencing. We present a comparative analysis of the two classical DEM co-registration and three residual correction algorithms. The experimental results show that rotation and scale biases should be considered in DEM co-registration. The new non-parametric regression technique can eliminate the complex systematic errors, which existed in the co-registration results.