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Investigating the geomorphological potential of freely available and accessible structure‐from‐motion photogrammetry using a smartphone
TLDR
Results for the river bank survey demonstrate that centimetre-precision DTMs can be achieved at close range (10 m or less), using a smartphone camera and a fully automated package, and improve to sub-centimetre precision with either higher-resolution images or by applying specific post-processing techniques to the smartphone DTMs.
Structure from motion (SFM) photogrammetry
Topographic data measurement is a fundamental aspect of many geomorphic research applications, particularly those including landform monitoring and investigation of changes in topography. However,
Characterization of the Structure of River-Bed Gravels Using Two-Dimensional Fractal Analysis
This paper is concerned with the application of fractal analysis to understand the structure of water-worked gravel-bed river surfaces. High resolution digital elevation models, acquired using
Three-dimensional measurement of river channel flow processes using acoustic doppler velocimetry
This paper describes and assesses: (i) the use of a new instrument for the determination of three-dimensional flow velocities in natural rivers, the acoustic Doppler velocimeter (ADV); and (ii) a
Effective application of automated digital photogrammetry for geomorphological research: Earth Surf
Developments in digital photogrammetry have provided geomorphologists with an automated tool to generate digital elevation models (DEMs) at exceedingly high densities. Although such software tools
Through‐Water Close Range Digital Photogrammetry in Flume and Field Environments
Measurement of the structure of gravel‐bed river surfaces is crucial for understanding both bed roughness and the sediment entrainment process. This paper describes the use of close range digital
Evaluation of Lidar and Medium Scale Photogrammetry for Detecting Soft‐Cliff Coastal Change
Lidar and photogrammetry have both been evaluated for detecting shortterm coastal change using the Black Ven mudslide, Dorset as a case study. A lidar‐generated digital elevation model (DEM) was
Developments in monitoring and modelling small‐scale river bed topography
Recent research in fluvial geomorphology has emphasized the spatially distributed feedbacks amongst river channel topography, flow hydraulics and sediment transport. Although understanding of the
Metric capabilities of low‐cost digital cameras for close range surface measurement
This paper examines the potential of low‐cost digital cameras for close range surface measurement using feature‐based image matching methods. This is achieved through extracting digital elevation
High spatial resolution data acquisition for the geosciences: kite aerial photography
TLDR
The results demonstrate that the method can extract a high number of sampling points at high accuracy, provided that there is suitable image texture across the site, and final judgment concerning the suitability of derived data is dependent upon an understanding of measurement variability and user quantification of acceptable accuracy.
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