论文标题
LIAAD:轻巧的细心角蒸馏,用于大规模的年龄不变的面部识别
LIAAD: Lightweight Attentive Angular Distillation for Large-scale Age-Invariant Face Recognition
论文作者
论文摘要
分解的表示形式通常用于年龄不变的面部识别(AIFR)任务。但是,这些方法已经达到了一些局限性,(1)具有年龄标签的大规模面部识别(FR)培训数据的要求,这在实践中受到限制; (2)高性能的重型深网架构; (3)他们的评估通常是在与年龄有关的面部数据库上进行的,同时忽略了标准的大规模FR数据库以确保鲁棒性。这项工作介绍了一种新型的轻巧的角度蒸馏(LIAAD)方法,用于克服这些局限性的大规模轻量级AIFR。鉴于两个具有不同专业知识的教师,鉴于两个高性能的重型网络,LIAAD引入了学习范式,以有效地提炼老年人的专注和角度知识,从这些老师到轻量级的学生网络,使其具有更高的FR准确性和与年龄较高的因素相对强大。因此,LIAAD方法能够采用带有年龄标签的两个FR数据集的优势来训练AIFR模型。除了先前的蒸馏方法主要关注封闭设置问题中的准确性和压缩比,我们的LIAAD旨在解决开放式问题,即大规模的面部识别。对LFW,IJB-B和IJB-C Janus,AgeDB和Megaface-Fgnet的评估证明了拟议方法在轻重量结构上的效率。这项工作还提出了一个新的纵向面部衰老(Logiface)数据库\ footNote {该数据库将在将来对与年龄相关的面部问题进行进一步研究。
Disentangled representations have been commonly adopted to Age-invariant Face Recognition (AiFR) tasks. However, these methods have reached some limitations with (1) the requirement of large-scale face recognition (FR) training data with age labels, which is limited in practice; (2) heavy deep network architectures for high performance; and (3) their evaluations are usually taken place on age-related face databases while neglecting the standard large-scale FR databases to guarantee robustness. This work presents a novel Lightweight Attentive Angular Distillation (LIAAD) approach to Large-scale Lightweight AiFR that overcomes these limitations. Given two high-performance heavy networks as teachers with different specialized knowledge, LIAAD introduces a learning paradigm to efficiently distill the age-invariant attentive and angular knowledge from those teachers to a lightweight student network making it more powerful with higher FR accuracy and robust against age factor. Consequently, LIAAD approach is able to take the advantages of both FR datasets with and without age labels to train an AiFR model. Far apart from prior distillation methods mainly focusing on accuracy and compression ratios in closed-set problems, our LIAAD aims to solve the open-set problem, i.e. large-scale face recognition. Evaluations on LFW, IJB-B and IJB-C Janus, AgeDB and MegaFace-FGNet with one million distractors have demonstrated the efficiency of the proposed approach on light-weight structure. This work also presents a new longitudinal face aging (LogiFace) database \footnote{This database will be made available} for further studies in age-related facial problems in future.