Abstract
The aim of this study is to derive the scaling behavior of gravel-bed roughness of terrestrial laser scanning (TLS) from airborne laser scanning (ALS). We use the fractal dimension, which can be estimated from the slope of log-log variogram of laser scanning data, to represent gravel-bed roughness. The study area is located near the confluence of the Nan-Shih River and Pei-Shih River, northern Taiwan. Two gravel-bed sites with the extent of 6m × 6m were acquired by FARO photon 80, and then in-situ digital surface models (DSMs) were generated with 1 cm × 1cm resolution. ALS survey was conducted by an Optech ALTM 3070 at the density of 247 points/m2. The point cloud data were collected by ALS, which showed smoothed surface of TLS counterparts. In this study, we used the deconvolution procedure to derive the variograms of TLS-derived DSM from the variograms of ALS data. Hence, we could establish the link between the gravel-bed roughness of TLS-derived DSM and ALS data. The results will lead a better understanding of gravel-bed roughness using ALS data for the large-scale areas.
Original language | English |
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Title of host publication | 34th Asian Conference on Remote Sensing 2013, ACRS 2013 |
Publisher | Asian Association on Remote Sensing |
Pages | 1635-1640 |
Number of pages | 6 |
Volume | 2 |
ISBN (Print) | 9781629939100 |
Publication status | Published - 2013 |
Event | 34th Asian Conference on Remote Sensing 2013, ACRS 2013 - Bali, Indonesia Duration: 2013 Oct 20 → 2013 Oct 24 |
Other
Other | 34th Asian Conference on Remote Sensing 2013, ACRS 2013 |
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Country/Territory | Indonesia |
City | Bali |
Period | 13-10-20 → 13-10-24 |
All Science Journal Classification (ASJC) codes
- Computer Networks and Communications