ToxId: an efficient algorithm to solve occlusions when tracking multiple animals

Video analysis of animal behaviour is widely used in fields such as ecology, ecotoxicology, and evolutionary research. However, when tracking multiple animals, occlusion and crossing are problematic, especially when the identity of each individual needs to be preserved. We present a new algorithm, T...

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Bibliographic Details
Published in:Scientific reports 2017-11, Vol.7 (1), p.14774-8, Article 14774
Main Authors: Rodriguez, Alvaro, Zhang, Hanqing, Klaminder, Jonatan, Brodin, Tomas, Andersson, Magnus
Format: Article
Language:English
Subjects:
631/114/1564
639/705/1042
Algorithms
Animal Migration
Animals
Behavior, Animal
Datasets as Topic
Ecotoxicology
Humanities and Social Sciences
Learning
Memory
multidisciplinary
Occlusion
Science
Science (multidisciplinary)
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Summary:Video analysis of animal behaviour is widely used in fields such as ecology, ecotoxicology, and evolutionary research. However, when tracking multiple animals, occlusion and crossing are problematic, especially when the identity of each individual needs to be preserved. We present a new algorithm, ToxId , which preserves the identity of multiple animals by linking trajectory segments using their intensity histogram and Hu-moments. We verify the performance and accuracy of our algorithm using video sequences with different animals and experimental conditions. The results show that our algorithm achieves state-of-the-art accuracy using an efficient approach without the need of learning processes, complex feature maps or knowledge of the animal shape. ToxId is also computationally efficient, has low memory requirements, and operates without accessing future or past frames.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-017-15104-2