Detailed recording of gully morphology in 3D through image-based modelling

数字高程模型 摄影测量学 点云 地质学 体积热力学 由运动产生的结构 遥感 软件 立体视 数码相机 计算机科学 计算机视觉 运动估计 量子力学 物理 程序设计语言
作者
Amaury Frankl,Cornelis Stal,Amanuel Zenebe Abraha,Jan Nyssen,Dirk Rieke‐Zapp,Alain De Wulf,Jean Poesen
出处
期刊:Catena [Elsevier BV]
卷期号:127: 92-101 被引量:105
标识
DOI:10.1016/j.catena.2014.12.016
摘要

The ability to understand gully erosion development is closely related to our ability to quantify the morphology of gullies. At present, various technologies are at hand to collect data at increasing levels of detail. However, many of the developed technologies are time-consuming, difficult to apply or expensive. As an alternative, image-based modelling offers a cost-efficient, flexible and rapid method to quantify gully morphology from photographs taken in the field. In this study, the use of image-based modelling was tested and fine-tuned to quantify the morphology of four gully heads in contrasting biophysical environments prone to gully erosion: two bank gullies in Central Belgium and two permanent gullies in Northern Ethiopia. Ground photographs (n = 88–235) were taken with a reflex Canon EOS 450D camera having a 20 mm wide-angle lens with a fixed focal length. The data collection occurred during days of 30–100% cloud cover and after removing excessive vegetation in the gullies. Processing of the photographs occurred in PhotoScan 1.0.2. software using the semi-automated Structure from Motion–Multi View Stereo (SfM–MVS) workflow, and allowed to produce 3D Digital Elevation Models with accuracies that range from millimetres to centimetres. In addition, for the same surface, 2.5D models were created in ArcGIS. Gully morphological properties were derived and included cross-sections, total volume and volume of undercut walls and soil pipe inlets. For the volume calculation, OPTOCAT software was used. Cross-sections were also quantified by tape meter measurements. When compared to 3D models, cross-sections quantified from tape meter measurements and from 2.5D models underestimate the cross-sectional area by < 1–14% and 0–2.5% respectively. Considering gully volume, 2.5D and 3D approximations show only small differences, related to the volume of soil pipe inlets and undercutting areas. These differences, however, highlight the erosive activity of the gullies, and are important to understand gully dynamics in detail. Geomorphologically speaking, areas where undercutting or soil piping occurs are among the most dynamic and reveal where important morphologic changes are about to occur. The accuracies reported in this study are similar to those obtained in other studies that consider surfaces of similar scales. In sum, image based modelling is a promising tool to study in detail gully morphology in 3D, which is the closest approximation of the surface morphology.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
1秒前
2秒前
小二郎应助房山季鸟猴采纳,获得10
2秒前
3秒前
can完成签到,获得积分10
3秒前
zhongzihao完成签到,获得积分20
4秒前
小蘑菇应助MaYue采纳,获得10
4秒前
4秒前
孙福禄应助机智的然然采纳,获得10
4秒前
GooJohn发布了新的文献求助10
5秒前
NexusExplorer应助杜兰特工队采纳,获得10
6秒前
6秒前
6秒前
7秒前
FashionBoy应助鲤跃采纳,获得10
8秒前
阳光c完成签到 ,获得积分10
8秒前
威武的手链完成签到,获得积分20
9秒前
sxr完成签到,获得积分10
9秒前
zhongzihao发布了新的文献求助10
10秒前
10秒前
在水一方应助闪闪采纳,获得10
10秒前
Jay发布了新的文献求助10
11秒前
灰灰子发布了新的文献求助10
11秒前
量子星尘发布了新的文献求助10
12秒前
12秒前
小丑鱼儿发布了新的文献求助10
14秒前
XYN1发布了新的文献求助10
14秒前
17秒前
17秒前
LiuLiu完成签到,获得积分10
18秒前
樱桃小热巴完成签到 ,获得积分10
18秒前
19秒前
19秒前
不低头完成签到,获得积分10
19秒前
大鱼完成签到,获得积分10
20秒前
20秒前
XYN1完成签到,获得积分10
20秒前
MaYue发布了新的文献求助10
21秒前
21秒前
21秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
‘Unruly’ Children: Historical Fieldnotes and Learning Morality in a Taiwan Village (New Departures in Anthropology) 400
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 350
Robot-supported joining of reinforcement textiles with one-sided sewing heads 320
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3988868
求助须知:如何正确求助?哪些是违规求助? 3531255
关于积分的说明 11253071
捐赠科研通 3269858
什么是DOI,文献DOI怎么找? 1804822
邀请新用户注册赠送积分活动 881994
科研通“疑难数据库(出版商)”最低求助积分说明 809035