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Publication

A computer vision-based method for spatial-temporal action recognition of tail-biting behaviour in group-housed pigs

Journal Contribution - Journal Article

As a typical harmful social behaviour, tail biting is considered to be a welfare-reducing problem with economic consequences for pig production. Taking a computer-vision based approach, in this study, we have developed a novel method to automatically identify and locate tail-biting interactions in group-housed pigs. The method employs a tracking-by-detection algorithm to simplify the group-level behaviour to pairwise interactions. Then, a convolution neural network (CNN) and a recurrent neural network (RNN) are combined to extract the spatial-temporal features and classify behaviour categories. The performance of the proposed method was evaluated by quantifying the localisation accuracy and behaviour classification accuracy. The results demonstrate that the tracking-by-detection approach is capable of obtaining the trajectories of biters and victims with a localisation accuracy of 92.71%. The spatial-temporal features trained by CNN and RNN are robust and effective with a category accuracy of 96.25%. In total, our proposed method is capable to identify and locate 89.23% of tail-biting behaviour in group-housed pigs.
Journal: Biosystems Engineering
ISSN: 1537-5110
Volume: 195
Pages: 27 - 41
Publication year:2020
BOF-keylabel:yes
IOF-keylabel:yes
BOF-publication weight:3
CSS-citation score:3
Authors:International
Authors from:Higher Education
Accessibility:Open