Residual image compensations for enhancement of high-frequency components in face hallucination

Authors:
Yen-Wei Chen;So Sasatani;Xianhua Han
Affiliations:
College of Computer Science and Information Technology, Central South Univ. of Forestry and Technology, Hunan, China,College of Information Science and Eng., Ritsumeikan University, Shiga, Japan;College of Information Science and Eng., Ritsumeikan University, Shiga, Japan;College of Information Science and Eng., Ritsumeikan University, Shiga, Japan
Venue:
ISNN'13 Proceedings of the 10th international conference on Advances in Neural Networks - Volume Part I
Year:
2013

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Abstract

Recently a growing interest has been seen in single-frame super-resolution techniques, which are known as example-based or learning based super-resolution techniques. Face Hallucination is one of such techniques, which is focused on resolution enhancement of facial images. Though face hallucination is a powerful and useful technique, some detailed high-frequency components cannot be recovered. In this paper, we propose a high-frequency compensation framework based on residual images for face hallucination method in order to improve the reconstruction performance. The basic idea of proposed framework is to reconstruct or estimate a residual image, which can be used to compensate the high-frequency components of the reconstructed high-resolution image. Three approaches based on our proposed framework are proposed. Experimental results show that the high-resolution images obtained using our proposed approaches can improve the quality of those obtained by conventional face hallucination method.