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Title
A tiger cannot change its stripes: Using a three-dimensional model to match images of living tigers and tiger skins
Author(s)
Hiby L., Lovell P., Patil N., Kumar N.S., Gopalaswamy A.M., Karanth K.U.
Published
2009
Publisher
Biology Letters
Published Version DOI
https://doi.org/10.1098/rsbl.2009.0028
Abstract
The tiger is one of many species in which individuals can be identified by surface patterns. Camera traps can be used to record individual tigers moving over an array of locations and provide data for monitoring and studying populations and devising conservation strategies. We suggest using a combination of algorithms to calculate similarity scores between pattern samples scanned from the images to automate the search for a match to a new image. We show how using a three-dimensional surface model of a tiger to scan the pattern samples allows comparison of images that differ widely in camera angles and body posture. The software, which is free to download, considerably reduces the effort required to maintain an image catalogue and we suggest it could be used to trace the origin of a tiger skin by searching a central database of living tigers' images for matches to an image of the skin. © 2009 The Royal Society.
Keywords
algorithm; conservation planning; database; felid; image analysis; pattern recognition; software; three-dimensional modeling; algorithm; article; body posture; camera; nonhuman; priority journal; skin surface; three dimensional imaging; tiger; Animal Identification Systems; Animals; Conservation of Natural Resources; Crime; Models, Biological; Photography; Pigments, Biological; Skin; Tigers
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PUB10407