SEGMENTATION AND SHAPE ANALYSIS

Improved active contour models with application to measurement of leg ulcers

[+] Author Affiliations
Peter Plassmann, Timothy David Jones

University of Glamorgan, School of Computing, Pontypridd, CF37 1DL, United Kingdom

J. Electron. Imaging. 12(2), 317-326 (Apr 01, 2003). doi:10.1117/1.1557159
History: Received May 7, 2002; Revised Sep. 6, 2002; Accepted Sep. 17, 2002; Online April 11, 2003
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Leg ulcers are chronic skin wounds that affect many people and take a long time to heal. The progress of wound healing and the effect of clinical treatments can be monitored partly by measuring the area of the wound. Measurements taken via manually based methods, such as using a computer pointing device to delineate the wound boundary in a digitized image, suffer from variations due to manual dexterity and differences of opinion between observers. Two active contour models are presented, and their measurement performances are compared with that of the existing manual delineation method. The models make use of manual delineation to initialize the solution and are shown to reduce the effect of the inherent variations on the repeatability (precision) of area measurements in most cases. Measurements made by both algorithms are often biased with respect to the manual measurements, although the bias is limited generally to less than 5% of the wound’s area. © 2003 SPIE and IS&T.

© 2003 SPIE and IS&T

Citation

Peter Plassmann and Timothy David Jones
"Improved active contour models with application to measurement of leg ulcers", J. Electron. Imaging. 12(2), 317-326 (Apr 01, 2003). ; http://dx.doi.org/10.1117/1.1557159


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