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Proceedings Paper

Gel tomography for 3D acquisition of plant root systems
Author(s): Kevin N. Montgomery; Anthony Gerard Heyenga
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Paper Abstract

A system for three-dimensional, non-destructive acquisition of the structure of plant root systems is described. The plants are grown in a transparent medium (a 'gel pack') and are then placed on a rotating stage. The stage is rotated in 5-degree increments while images are captured using either traditional photography or a CCD camera. The individual images are then used as input to a tomographic (backprojection) algorithm to recover the original volumetric data. This reconstructed volume is then used as input to a 3D-reconstruction system. The software performs segmentation and mesh generation to derive a tessellated mesh of the root structure. This mesh can then be visualized using computer graphics, or used to derive measurements of root thickness and length. For initial validation studies, a wire model of known length and gauge was used as a calibration sample. The use of the transparent gel- pack media, together with the gel tomography software, allows the plant biologist a method for non-destructive visualization and measurement of root structure that has previously been unattainable.

Paper Details

Date Published: 6 March 1998
PDF: 3 pages
Proc. SPIE 3313, Three-Dimensional Image Capture and Applications, (6 March 1998); doi: 10.1117/12.302442
Show Author Affiliations
Kevin N. Montgomery, NASA Ames Research Ctr. (United States)
Anthony Gerard Heyenga, NASA Ames Research Ctr. (United States)

Published in SPIE Proceedings Vol. 3313:
Three-Dimensional Image Capture and Applications
Richard N. Ellson; Joseph H. Nurre, Editor(s)

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