Face hallucination based on sparse local-pixel structure

Li, Yongchao; Cai, Cheng; Qiu, Guoping; Lam, Kin-Man

Abstract

In this paper, we propose a face-hallucination method, namely face hallucination based on sparse local-pixel structure. In our framework, a high resolution (HR) face is estimated from a single frame low resolution (LR) face with the help of the facial dataset. Unlike many existing face-hallucination methods such as the from local-pixel structure to global image super-resolution method (LPS-GIS) and the super-resolution through neighbor embedding, where the prior models are learned by employing the least-square methods, our framework aims to shape the prior model using sparse representation. Then this learned prior model is employed to guide the reconstruction process. Experiments show that our framework is very flexible, and achieves a competitive or even superior performance in terms of both reconstruction error and visual quality. Our method still exhibits an impressive ability to generate plausible HR facial images based on their sparse local structures.

Citation

Li, Y., Cai, C., Qiu, G., & Lam, K. (2014). Face hallucination based on sparse local-pixel structure. Pattern Recognition, 47(3), 1261-1270. https://doi.org/10.1016/j.patcog.2013.09.012

• Journal Article Type: Article
• Acceptance Date: Sep 16, 2013
• Online Publication Date: Sep 24, 2013
• Publication Date: 2014-03
• Deposit Date: Jul 31, 2018
• Publicly Available Date: Jul 31, 2018
• Journal: Pattern Recognition
• Print ISSN: 0031-3203
• Electronic ISSN: 0031-3203
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 47
• Issue: 3
• Pages: 1261-1270
• DOI: https://doi.org/10.1016/j.patcog.2013.09.012
• Keywords: Face hallucination; Sparse local-pixel structure; Super-resolution; Sparse representation
• Public URL: https://nottingham-repository.worktribe.com/output/996604
• Publisher URL: https://www.sciencedirect.com/science/article/pii/S0031320313003841