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Digital Elevation Models from Stereo, Video and Multi-View Imagery captured by small Satellites

d'Angelo, Pablo and Reinartz, Peter (2021) Digital Elevation Models from Stereo, Video and Multi-View Imagery captured by small Satellites. In: The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, XLIII, pp. 77-82. ÎSPRS 2021, 04.-10. July 2021, Nice, France (virtual event). doi: 10.5194/isprs-archives-XLIII-B2-2021-77-2021. ISSN 1682-1750.

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Official URL: https://www.int-arch-photogramm-remote-sens-spatial-inf-sci.net/XLIII-B2-2021/77/2021/

Abstract

Small satellites play an increasing role in earth observation. This article evaluates different possibilities of utilizing data from Planet s SkySat and PlanetScope satellites constellations for derivation of digital elevation models. While SkySat provides high resolution image data with a ground sampling distance of up to 50 cm, the PlanetScope constellation consisting of Dove 3U cubesats provide images with a resolution of around 4 m. The PlanetScope acquisition strategy was not designed for stereo acquisitions, but for daily acquisition of nadir viewing imagery. Multiple different products can be acquired by the SkySat satellites: Collects covering an area of usually 12 by 6 km, tri-stereo collects and video products with a framerate of 30 Hz. This study evaluates DSM generation using a Semi-Global Matching from multi date stereo pairs for SkySat and PlanetScope, and the dedicated Video and tri-stereo SkySat acquisitions. DSMs obtained by merging many PlanetScope across track stereo pairs show an normalized median deviation against LiDaR first pulse data of 5.2 meter over diverse landcover at the test sites around the city of Terrassa in Catalonia, Spain. SkySat tri-stereo products with 80 cm resolution reach an NMAD of 1.3 m over Terrassa.

Item URL in elib:https://elib.dlr.de/145946/
Document Type:Conference or Workshop Item (Poster)
Title:Digital Elevation Models from Stereo, Video and Multi-View Imagery captured by small Satellites
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
d'Angelo, PabloPablo.Angelo (at) dlr.dehttps://orcid.org/0000-0001-8541-3856
Reinartz, Peterpeter.reinartz (at) dlr.dehttps://orcid.org/0000-0002-8122-1475
Date:July 2021
Journal or Publication Title:The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:No
Volume:XLIII
DOI :10.5194/isprs-archives-XLIII-B2-2021-77-2021
Page Range:pp. 77-82
ISSN:1682-1750
Status:Published
Keywords:digital surface models, dense matching, small satellite, stereo, multi-view
Event Title:ÎSPRS 2021
Event Location:Nice, France (virtual event)
Event Type:international Conference
Event Dates:04.-10. July 2021
Organizer:International Society for Photogrammetry and Remote Sensing (ISPRS)
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):R - Optical remote sensing
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > Photogrammetry and Image Analysis
Deposited By: d'Angelo, Dr. Pablo
Deposited On:24 Nov 2021 13:13
Last Modified:24 Nov 2021 13:13

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