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Journal of University of Chinese Academy of Sciences ›› 2021, Vol. 38 ›› Issue (4): 538-548.DOI: 10.7523/j.issn.2095-6134.2021.04.014

• Research Articles • Previous Articles     Next Articles

Hierarchical Gaussian loss based object detection in open world

WANG Lin1,2,3, CHEN Xilin2   

  1. 1. Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai;
    2. Institute of Computing Technology, Chinese Academy of Sciences, Beijing 100190, China;
    3. School of Information Science and Technology, ShanghaiTech University, Shanghai 201210, China
  • Received:2020-08-11 Revised:2021-01-26 Online:2021-07-15

Abstract: Object detection targets both object localization and categorization. Most of existing object detection methods are category-dependent, and can not deal with the detection task in open world with unknown categories. In aware that the difficulties of localization and categorization are different during transfer from known categories to unknown ones, and the localization is more universal than categorization, and inspired by the process of human categorization on unknown objects, we propose a Gaussian hierarchical loss model which applies an hierarchical modeling of object categories in object detection. KL divergence is used to describe the hierarchical relationship among categories while learning all the class multidimensional Gaussian distributions and enhance the transfer ability from the known classes to the unknown classes. Therefore the proposed method can extend the existing object detection methods to unknown categories in open world. Experimental results show that the proposed method can improve the detection ability of unknown categories without losing the performance on known categories.

Key words: object detection, open world, hierarchical categories relationship, Gaussian hierarchical loss

CLC Number: