A method of detecting interaction between breeding cows from time-series bird's eye pictures of pasture

Breeding cows are known to engage in sociality, in which they interact and form groups. This paper proposes a method of detecting the interaction between breeding cows from time-series pictures of pastures by a similar image retrieval method using a Bag of Visual Words. We divided the interaction detection into three tasks: detecting a pair of cows in an interaction, pinpointing the time and the place that the interaction was observed and identifying its type. This paper focuses on the identifying task. In the proposed method, a similar image retrieval method is used to classify the interaction, and the information from the states of preceding and succeeding the interaction is considered to improve the accuracy of the interaction classification. The effectiveness of the proposed method was confirmed experimentally.