Face-Specific Data Augmentation for Unconstrained Face Recognition

• Published in: International journal of computer vision Vol. 127; no. 6-7; pp. 642 - 667
• Main Authors: Masi, Iacopo, Trần, Anh Tuấn, Hassner, Tal, Sahin, Gozde, Medioni, Gérard
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.06.2019; Springer; Springer Nature B.V
• Subjects: Artificial Intelligence; Computer Imaging; Computer Science; Computer vision; Consumer goods; Data augmentation; Face recognition; Facial recognition technology; Gesture recognition; Image Processing and Computer Vision; Machine vision; Object recognition; Pattern Recognition; Pattern Recognition and Graphics; System effectiveness; Training; Vision; Deep learning; Face recognition; Data augmentation
• ISSN: 0920-5691; 1573-1405
• DOI: 10.1007/s11263-019-01178-0

We identify two issues as key to developing effective face recognition systems: maximizing the appearance variations of training images and minimizing appearance variations in test images. The former is required to train the system for whatever appearance variations it will ultimately encounter and is often addressed by collecting massive training sets with millions of face images. The latter involves various forms of appearance normalization for removing distracting nuisance factors at test time and making test faces easier to compare. We describe novel, efficient face-specific data augmentation techniques and show them to be ideally suited for both purposes. By using knowledge of faces, their 3D shapes, and appearances, we show the following: (a) We can artificially enrich training data for face recognition with face-specific appearance variations. (b) This synthetic training data can be efficiently produced online, thereby reducing the massive storage requirements of large-scale training sets and simplifying training for many appearance variations. Finally, (c) The same, fast data augmentation techniques can be applied at test time to reduce appearance variations and improve face representations. Together, with additional technical novelties, we describe a highly effective face recognition pipeline which, at the time of submission, obtains state-of-the-art results across multiple benchmarks. Portions of this paper were previously published by Masi et al. (European conference on computer vision, Springer, pp 579–596, 2016b , International conference on automatic face and gesture recognition, 2017 ).