Paper Info
Title
Geometric Accuracy Assessment Of Deimos-2 Panchromatic Stereo Pairs: Sensor Orientation And Digital Surface Model Production
Abstract
Accurate elevation data, which can be extracted from very high-resolution (VHR) satellite images, are vital for many engineering and land planning applications. In this way, the main goal of this work is to evaluate the capabilities of VHR Deimos-2 panchromatic stereo pairs to obtain digital surface models (DSM) over different land covers (bare soil, urban and agricultural greenhouse areas). As a step prior to extracting the DSM, different orientation models based on refined rational polynomial coefficients (RPC) and a variable number of very accurate ground control points (GCPs) were tested. The best sensor orientation model for Deimos-2 L1B satellite images was the RPC model refined by a first-order polynomial adjustment (RPC1) supported on 12 accurate and evenly spatially distributed GCPs. Regarding the Deimos-2 based DSM, its completeness and vertical accuracy were compared with those obtained from a WorldView-2 panchromatic stereo pair by using exactly the same methodology and semiglobal matching (SGM) algorithm. The Deimos-2 showed worse completeness values (about 6% worse) and vertical accuracy results (RMSEZ 42.4% worse) than those computed from WorldView-2 imagery over the three land covers tested, although only urban areas yielded statistically significant differences (p < 0.05).
Year
DOI
Venue
2020
10.3390/s20247234
SENSORS
Keywords
DocType
Volume
Deimos-2, VHR satellite images, geometric accuracy, sensor orientation model, digital surface model
Journal
20
Issue
ISSN
Citations 
24
1424-8220
0
PageRank 
References 
Authors
0.34
0
4
Name
Order
Citations
PageRank
Manuel A. Aguilar1315.01
Rafael Jiménez-Lao200.34
Abderrahim Nemmaoui3274.89
F. J. Aguilar48310.62