HPRNet: Hierarchical Point Regression for Whole-Body Human Pose Estimation
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In this paper, we present a new bottom-up one-stage method for whole-body pose estimation, which we name "hierarchical point regression," or HPRNet for short, referring to the network that implements this method. To handle the scale variance among different body parts, we build a hierarchical point representation of body parts and jointly regress them. Unlike the existing two-stage methods, our method predicts whole-body pose in a constant time independent of the number of people in an image. On the COCO WholeBody dataset, HPRNet significantly outperforms all previous bottom-up methods on the keypoint detection of all whole-body parts (i.e. body, foot, face and hand); it also achieves state-of-the-art results in the face (75.4 AP) and hand (50.4 AP) keypoint detection. Code and models are available at https://github.com/nerminsamet/HPRNet.git.
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