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Evaluating Elevation Change Thresholds between Structure-from-Motion DEMs Derived from Historical Aerial Photos and 3DEP LiDAR Data

Remote sensing (Basel, Switzerland), 2020-05, Vol.12 (10), p.1625 [Peer Reviewed Journal]

2020. This work is licensed under http://creativecommons.org/licenses/by/3.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. ;ISSN: 2072-4292 ;EISSN: 2072-4292 ;DOI: 10.3390/rs12101625

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Title:
Evaluating Elevation Change Thresholds between Structure-from-Motion DEMs Derived from Historical Aerial Photos and 3DEP LiDAR Data
Author: Chirico, Peter ; DeWitt, Jessica ; Bergstresser, Sarah
Subjects: Accuracy ; Aerial photography ; Archives & records ; Assessments ; Cameras ; Datasets ; DEM accuracy ; Digital imaging ; digital surface model (DSM) thresholding ; Elevation ; Evaluation ; Geological surveys ; Geomorphology ; historical aerial image photogrammetry ; Historical structures ; Lidar ; Mapping ; Motion perception ; root of sum in quadrature (RSiQ) ; Software ; structure from motion (SfM) ; Studies ; Terrain models ; Thresholds ; topographic change ; Topography ; Vegetation ; Watersheds
Is Part Of: Remote sensing (Basel, Switzerland), 2020-05, Vol.12 (10), p.1625
Description: This study created digital terrain models (DTMs) from historical aerial images using Structure from Motion (SfM) for a variety of image dates, resolutions, and photo scales. Accuracy assessments were performed on the SfM DTMs, and they were compared to the United States Geological Survey’s three-dimensional digital elevation program (3DEP) light detection and ranging (LiDAR) DTMs to evaluate geomorphic change thresholds based on vertical accuracy assessments and elevation change methodologies. The results of this study document a relationship between historical aerial photo scales and predicted vertical accuracy of the resultant DTMs. The results may be used to assess geomorphic change thresholds over multi-decadal timescales depending on spatial scale, resolution, and accuracy requirements. This study shows that if elevation changes of approximately ±1 m are to be mapped, historical aerial photography collected at 1:20,000 scale or larger would be required for comparison to contemporary LiDAR derived DTMs.
Publisher: Basel: MDPI AG
Language: English
Identifier: ISSN: 2072-4292
EISSN: 2072-4292
DOI: 10.3390/rs12101625
Source: ROAD: Directory of Open Access Scholarly Resources
ProQuest Central
DOAJ Directory of Open Access Journals

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Evaluating Elevation Change Thresholds between Structure-from-Motion DEMs Derived from Historical Aerial Photos and 3DEP LiDAR Data

2020. This work is licensed under http://creativecommons.org/licenses/by/3.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License. ;ISSN: 2072-4292 ;EISSN: 2072-4292 ;DOI: 10.3390/rs12101625

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