Multiple Anchor Learning for Visual Object Detection
Abstract
Classification and localization are two pillars of visual object detectors. However, in CNN-based detectors, these two modules are usually optimized under a fixed set of candidate (or anchor) bounding boxes. This configuration significantly limits the possibility to jointly optimize classification and localization. In this paper, we propose a Multiple Instance Learning (MIL) approach that selects anchors and jointly optimizes the two modules of a CNN-based object detector. Our approach, referred to as Multiple Anchor Learning (MAL), constructs anchor bags and selects the most representative anchors from each bag. Such an iterative selection process is potentially NP-hard to optimize. To address this issue, we solve MAL by repetitively depressing the confidence of selected anchors by perturbing their corresponding features. In an adversarial selection-depression manner, MAL not only pursues optimal solutions but also fully leverages multiple anchors/features to learn a detection model. Experiments show that MAL improves the baseline RetinaNet with significant margins on the commonly used MS-COCO object detection benchmark and achieves new state-of-the-art detection performance compared with recent methods.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 14, 2020
- Accession Number
- AD1152476
Entities
People
- Dong Huang
- Jianzhuang Liu
- Qixiang Ye
- Tianliang Zhang
- Wei Ke
- Zeyi Huang
Organizations
- Carnegie Mellon University
- Shenzhen Institutes of Advanced Technology
- University of Chinese Academy of Sciences
- Xi'an Jiaotong University