Pose Classification of Horse Behavior in Video : A deep learning approach for classifying equine poses based on 2D keypoints

University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

Abstract: This thesis investigates whether Computer Vision can be a useful tool in interpreting the behaviors of monitored horses. In recent years, research in the field of Computer Vision has primarily focused on people, where pose estimation and action recognition are popular research areas. The thesis presents a pose classification network, where input features are described by estimated 2D key- points of horse body parts. The network output classifies three poses: ’Head above the wither’, ’Head aligned with the wither’ and ’Head below the wither’. The 2D reconstructions of keypoints are obtained using DeepLabCut applied to raw video surveillance data of a single horse. The estimated keypoints are then fed into a Multi-layer preceptron, which is trained to classify the mentioned classes. The network shows promising results with good performance. We found label noise when we spot-checked random samples of predicted poses and comparing them to the ground truth, as some of the labeled data consisted of false ground truth samples. Despite this fact, the conclusion is that satisfactory results are achieved with our method. Particularly, the keypoint estimates were sufficient enough for these poses for the model to succeed to classify a hold-out set of poses. 

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