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arXiv · 1710.10749

Cascade Region Proposal and Global Context for Deep Object Detection

Qiaoyong Zhong·Chao Li·Yingying Zhang·Di Xie·Shicai Yang·Shiliang Pu
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Abstract

Deep region-based object detector consists of a region proposal step and a deep object recognition step. In this paper, we make significant improvements on both of the two steps. For region proposal we propose a novel lightweight cascade structure which can effectively improve RPN proposal quality. For object recognition we re-implement global context modeling with a few modications and obtain a performance boost (4.2% mAP gain on the ILSVRC 2016 validation set). Besides, we apply the idea of pre-training extensively and show its importance in both steps. Together with common training and testing tricks, we improve Faster R-CNN baseline by a large margin. In particular, we obtain 87.9% mAP on the PASCAL VOC 2012 test set, 65.3% on the ILSVRC 2016 test set and 36.8% on the COCO test-std set.

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Qiaoyong Zhong, Chao Li, Yingying Zhang, Di Xie, Shicai Yang, Shiliang Pu. 2017-10-30. Cascade Region Proposal and Global Context for Deep Object Detection. https://arxiv.org/abs/1710.10749

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