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APT-36K: A Large-scale Benchmark for Animal Pose Estimation and Tracking
Yuxiang Yang · Junjie Yang · Yufei Xu · Jing Zhang · Long Lan · Dacheng Tao


Animal pose estimation and tracking (APT) is a fundamental task for detecting and tracking animal keypoints from a sequence of video frames. Previous animal-related datasets focus either on animal tracking or single-frame animal pose estimation, and never on both aspects. The lack of APT datasets hinders the development and evaluation of video-based animal pose estimation and tracking methods, limiting the applications in real world, e.g., understanding animal behavior in wildlife conservation. To fill this gap, we make the first step and propose APT-36K, i.e., the first large-scale benchmark for animal pose estimation and tracking. Specifically, APT-36K consists of 2,400 video clips collected and filtered from 30 animal species with 15 frames for each video, resulting in 36,000 frames in total. After manual annotation and careful double-check, high-quality keypoint and tracking annotations are provided for all the animal instances. Based on APT-36K, we benchmark several representative models on the following three tracks: (1) supervised animal pose estimation on a single frame under intra- and inter-domain transfer learning settings, (2) inter-species domain generalization test for unseen animals, and (3) animal pose estimation with animal tracking. Based on the experimental results, we gain some empirical insights and show that APT-36K provides a useful animal pose estimation and tracking benchmark, offering new challenges and opportunities for future research. The code and dataset will be made publicly available at https://github.com/pandorgan/APT-36K.

Author Information

Yuxiang Yang (Hangzhou Dianzi University)
Junjie Yang (Hangzhou Dianzi University)
Yufei Xu (The University of Sydney, University of Sydney)
Jing Zhang (The University of Sydney)
Long Lan (National University of Defense Technology, Tsinghua University)
Dacheng Tao (University of Technology, Sydney)

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