arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2102.05447cs.CVcs.AI
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人脸识别中的对齐搜索

Searching for Alignment in Face Recognition

AIBEE(爱笔(北京)科技有限公司);Northwestern Polytechnical University(西北工业大学);Institute of Automation, Chinese Academy of Sciences(中国科学院自动化研究所);University of Chinese Academy of Sciences(中国科学院大学);Mininglamp Technology(明略科技集团)

Xiaqing Xu, Qiang Meng, Yunxiao Qin, Jianzhu Guo, Chenxu Zhao, Feng Zhou, Zhen Lei

摘要:

当前人脸识别框架的标准流程包括四个单独的步骤:使用粗略的限界框和几个基准地标定位人脸,使用预定义的模板对齐人脸图像,提取表示并进行比较。其中,人脸检测、地标检测和表示学习是人们长期以来研究的问题,并提出了大量的工作。作为一个重要的步骤,识别性能的显着影响,对齐步骤吸引了很少的关注。在本文中,我们首先探讨和突出不同的对齐模板对人脸识别的影响。然后,第一次,我们尝试自动搜索最佳模板。通过将模板搜索分解为裁剪尺寸和垂直位移,构造了一个定义良好的搜索空间,并提出了一种有效的人脸对齐策略搜索(FAPS)。此外,提出了一个设计良好的基准来评估搜索策略。在我们提出的基准上的实验验证了我们的方法,以提高人脸识别性能的有效性。

英文摘要:

A standard pipeline of current face recognition frameworks consists of four individual steps: locating a face with a rough bounding box and several fiducial landmarks, aligning the face image using a pre-defined template, extracting representations and comparing. Among them, face detection, landmark detection and representation learning have long been studied and a lot of works have been proposed. As an essential step with a significant impact on recognition performance, the alignment step has attracted little attention. In this paper, we first explore and highlight the effects of different alignment templates on face recognition. Then, for the first time, we try to search for the optimal template automatically. We construct a well-defined searching space by decomposing the template searching into the crop size and vertical shift, and propose an efficient method Face Alignment Policy Search (FAPS). Besides, a well-designed benchmark is proposed to evaluate the searched policy. Experiments on our proposed benchmark validate the effectiveness of our method to improve face recognition performance.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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