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A geometric framework for channel network extraction from lidar: Nonlinear diffusion and geodesic paths

Publication ,  Journal Article
Passalacqua, P; Do Trung, T; Foufoula-Georgiou, E; Sapiro, G; Dietrich, WE
Published in: Journal of Geophysical Research: Earth Surface
January 1, 2010

[1] A geometric framework for the automatic extraction of channels and channel networks from high-resolution digital elevation data is introduced in this paper. The proposed approach incorporates nonlinear diffusion for the preprocessing of the data, both to remove noise and to enhance features that are critical to the network extraction. Following this preprocessing, channels are defined as curves of minimal effort, or geodesies, where the effort is measured on the basis of fundamental geomorphological characteristics such as flow accumulation area and isoheight contours curvature. The merits of the proposed methodology, and especially the computational efficiency and accurate localization of the extracted channels, are demonstrated using light detection and ranging (lidar) data of the Skunk Creek, a tributary of the South Fork Eel River basin in northern California. Copyright 2010 by the American Geophysical Union.

Duke Scholars

Published In

Journal of Geophysical Research: Earth Surface

EISSN

2169-9011

Publication Date

January 1, 2010

Volume

115

Issue

1

Related Subject Headings

  • 41 Environmental sciences
  • 37 Earth sciences
  • 04 Earth Sciences
 

Citation

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Passalacqua, P., Do Trung, T., Foufoula-Georgiou, E., Sapiro, G., & Dietrich, W. E. (2010). A geometric framework for channel network extraction from lidar: Nonlinear diffusion and geodesic paths. Journal of Geophysical Research: Earth Surface, 115(1).
Passalacqua, P., T. Do Trung, E. Foufoula-Georgiou, G. Sapiro, and W. E. Dietrich. “A geometric framework for channel network extraction from lidar: Nonlinear diffusion and geodesic paths.” Journal of Geophysical Research: Earth Surface 115, no. 1 (January 1, 2010).
Passalacqua P, Do Trung T, Foufoula-Georgiou E, Sapiro G, Dietrich WE. A geometric framework for channel network extraction from lidar: Nonlinear diffusion and geodesic paths. Journal of Geophysical Research: Earth Surface. 2010 Jan 1;115(1).
Passalacqua, P., et al. “A geometric framework for channel network extraction from lidar: Nonlinear diffusion and geodesic paths.” Journal of Geophysical Research: Earth Surface, vol. 115, no. 1, Jan. 2010.
Passalacqua P, Do Trung T, Foufoula-Georgiou E, Sapiro G, Dietrich WE. A geometric framework for channel network extraction from lidar: Nonlinear diffusion and geodesic paths. Journal of Geophysical Research: Earth Surface. 2010 Jan 1;115(1).

Published In

Journal of Geophysical Research: Earth Surface

EISSN

2169-9011

Publication Date

January 1, 2010

Volume

115

Issue

1

Related Subject Headings

  • 41 Environmental sciences
  • 37 Earth sciences
  • 04 Earth Sciences