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• W2994604001 startingPage "124430" @default.
• W2994604001 abstract "A Structure from Motion (SfM) photogrammetry-based methodology for precise mapping of large wood (LW) accumulations in fluvial systems is presented. The technique may be useful for routine inventory and rapid volume estimation of complex LW structures that tend to divert or obstruct flow in rivers. Our methodology is validated by means of laboratory experiments, ranging from elementary to complex arrangements of LW components and organic fine material (OFM). Seven experimental setups were used as the basis for (i) manual approximations of 2.5D and 3D geometric reference volumes, (ii) 2.5D volume models based on mesh geometry, (iii) a closed (‘watertight’) 3D mesh from an unorganized point cloud and (iv) estimates of porosity. A commercially available SfM photogrammetry software package, Pix4Dmapper, was used for point cloud and simplified mesh generation. In order to obtain more precise volumes, 3D surface models are required. Accordingly, we generated 3D watertight mesh models of the unorganized point cloud using the screened Poisson Surface Reconstruction (PSR) technique. The Pix4D volume tool (2.5D) resulted in an overestimation (2.9 to 52.7%) of the geometric volume (3D), due to the convex hull approximation of the geometry normal to the surface plane. PSR (3D) resulted in more precise volumes, showing deviations from the geometric volume (3D) in a range of −15.9 to +10.6%, as the algorithm could capture concavities and involuted surfaces on the accumulation. Assuming that the difference between 3D and 2.5D volume models represents many of the voids visible within or on the surface of the deposit, this volume can be used as an estimate of porosity. Our assessment suggests that image-based SfM methodology is well-suited for further investigations in LW research, due to its time and cost efficiency in comparison with other conventional surveying techniques. The methodology can be used to generate high quality point cloud and mesh models of log jam formations; these may be used by river managers and researchers to quantify accumulation volume and thus gain a better understanding of LW composition and the influence of wood geometry on hydraulic flow conditions." @default.
• W2994604001 created "2019-12-13" @default.
• W2994604001 creator A5023597412 @default.
• W2994604001 creator A5028087208 @default.
• W2994604001 creator A5053317469 @default.
• W2994604001 date "2020-02-01" @default.
• W2994604001 modified "2023-10-10" @default.
• W2994604001 title "Large wood (LW) 3D accumulation mapping and assessment using structure from Motion photogrammetry in the laboratory" @default.
• W2994604001 cites W1563480203 @default.
• W2994604001 cites W1578345594 @default.
• W2994604001 cites W1788256887 @default.
• W2994604001 cites W186090363 @default.
• W2994604001 cites W1934902175 @default.
• W2994604001 cites W1965711210 @default.
• W2994604001 cites W1965722128 @default.
• W2994604001 cites W1965862534 @default.
• W2994604001 cites W1971829049 @default.
• W2994604001 cites W1972848619 @default.
• W2994604001 cites W1982818760 @default.
• W2994604001 cites W1985167150 @default.
• W2994604001 cites W1991325732 @default.
• W2994604001 cites W1992642990 @default.
• W2994604001 cites W1996798935 @default.
• W2994604001 cites W1998943389 @default.
• W2994604001 cites W2005212539 @default.
• W2994604001 cites W2013276429 @default.
• W2994604001 cites W2013336075 @default.
• W2994604001 cites W2014327108 @default.
• W2994604001 cites W2014383059 @default.
• W2994604001 cites W2014780519 @default.
• W2994604001 cites W2017851049 @default.
• W2994604001 cites W2019557217 @default.
• W2994604001 cites W2024395588 @default.
• W2994604001 cites W2027254180 @default.
• W2994604001 cites W2027543751 @default.
• W2994604001 cites W2035419249 @default.
• W2994604001 cites W2038339669 @default.
• W2994604001 cites W2043482313 @default.
• W2994604001 cites W2043689596 @default.
• W2994604001 cites W2047405824 @default.
• W2994604001 cites W2048503694 @default.
• W2994604001 cites W2050475749 @default.
• W2994604001 cites W2050499851 @default.
• W2994604001 cites W2051612069 @default.
• W2994604001 cites W2055803058 @default.
• W2994604001 cites W2063712217 @default.
• W2994604001 cites W2063887975 @default.
• W2994604001 cites W2068113804 @default.
• W2994604001 cites W2069853858 @default.
• W2994604001 cites W2070897170 @default.
• W2994604001 cites W2077907027 @default.
• W2994604001 cites W2082045605 @default.
• W2994604001 cites W2083607136 @default.
• W2994604001 cites W2084595284 @default.
• W2994604001 cites W2085424268 @default.
• W2994604001 cites W2085998260 @default.
• W2994604001 cites W2092326028 @default.
• W2994604001 cites W2092396370 @default.
• W2994604001 cites W2092578925 @default.
• W2994604001 cites W2093572647 @default.
• W2994604001 cites W2110432750 @default.
• W2994604001 cites W2113748593 @default.
• W2994604001 cites W2120619026 @default.
• W2994604001 cites W2132424470 @default.
• W2994604001 cites W2143175817 @default.
• W2994604001 cites W2149388057 @default.
• W2994604001 cites W2158098588 @default.
• W2994604001 cites W2161304919 @default.
• W2994604001 cites W2171321227 @default.
• W2994604001 cites W2175890440 @default.
• W2994604001 cites W2199470297 @default.
• W2994604001 cites W2207055384 @default.
• W2994604001 cites W2256682908 @default.
• W2994604001 cites W2289470768 @default.
• W2994604001 cites W2296684195 @default.
• W2994604001 cites W2299446122 @default.
• W2994604001 cites W2366389387 @default.
• W2994604001 cites W2401529287 @default.
• W2994604001 cites W2413910992 @default.
• W2994604001 cites W2462010885 @default.
• W2994604001 cites W2498722300 @default.
• W2994604001 cites W2513055333 @default.
• W2994604001 cites W2526838437 @default.
• W2994604001 cites W2532365185 @default.
• W2994604001 cites W2547184547 @default.
• W2994604001 cites W2547685746 @default.
• W2994604001 cites W2553533500 @default.
• W2994604001 cites W2566809385 @default.
• W2994604001 cites W2607557515 @default.
• W2994604001 cites W2612034739 @default.
• W2994604001 cites W2620993408 @default.
• W2994604001 cites W2694961595 @default.
• W2994604001 cites W2742929170 @default.
• W2994604001 cites W2755860212 @default.
• W2994604001 cites W2761129952 @default.
• W2994604001 cites W2768157880 @default.
• W2994604001 cites W2769881629 @default.
• W2994604001 cites W2780432105 @default.

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