LabelEnc: A New Intermediate Supervision Method for Object Detection

• URL: http://arxiv.org/abs/2007.03282v3
• Date: Tue, 1 Sep 2020 02:37:24 GMT
• Title: LabelEnc: A New Intermediate Supervision Method for Object Detection
• Authors: Miao Hao, Yitao Liu, Xiangyu Zhang, Jian Sun
• Abstract summary: We propose a new intermediate supervision method, named LabelEnc, to boost the training of object detection systems. The key idea is to introduce a novel label encoding function, mapping the ground-truth labels into latent embedding. Experiments show our method improves a variety of detection systems by around 2% on COCO dataset.
• Score: 78.74368141062797
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: In this paper we propose a new intermediate supervision method, named LabelEnc, to boost the training of object detection systems. The key idea is to introduce a novel label encoding function, mapping the ground-truth labels into latent embedding, acting as an auxiliary intermediate supervision to the detection backbone during training. Our approach mainly involves a two-step training procedure. First, we optimize the label encoding function via an AutoEncoder defined in the label space, approximating the "desired" intermediate representations for the target object detector. Second, taking advantage of the learned label encoding function, we introduce a new auxiliary loss attached to the detection backbones, thus benefiting the performance of the derived detector. Experiments show our method improves a variety of detection systems by around 2% on COCO dataset, no matter one-stage or two-stage frameworks. Moreover, the auxiliary structures only exist during training, i.e. it is completely cost-free in inference time. Code is available at: https://github.com/megvii-model/LabelEnc

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