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Pose2Seg: Human Instance Segmentation Without Detection

Ruilong Li, Xin Dong, Zixi Cai, Dingcheng Yang, Haozhi Huang, Song-Hai Zhang, Paul L. Rosin, Shi-Min Hu

The general method of image instance segmentation is to perform the object detection first, and then segment the object from the detection bounding-box. More recently, deep learning methods like Mask R-CNN perform them jointly. However, little research takes into account the uniqueness of the "1human" category, which can be well defined by the pose skeleton. In this paper, we present a brand new pose-based instance segmentation framework for humans which separates instances based on human pose, not proposal region detection. We demonstrate that our pose-based framework can achieve similar accuracy to the detection-based approach, and can moreover better handle occlusion, which is the most challenging problem in the detection-based framework.

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