A Face Hallucination Algorithm via an LLE Coefficients Prior Model

作     者：LI Xiaoguang JIA Guangheng LI Jiafeng ZHUO Li 

作者机构：Signal and Information Processing Laboratory Beijing University of Technology 

出 版 物：《Chinese Journal of Electronics》 (电子学报(英文))

年 卷 期：2018年第27卷第6期

页      面：1234-1240页

核心收录：

学科分类：0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080203[工学-机械设计及理论] 0802[工学-机械工程] 0701[理学-数学] 

基　　金：supported by the National Natural Science Foundation of China(No.61471013,No.61531006,No.61372149,No.61370189) the Importation and Development of High-Caliber Talents Project of Beijing Municipal Institutions(No.CIT&TCD201404043,No.CIT&TCD20150311) the Beijing Natural Science Foundation(No.4142009,No.4163071) the Science and Technology Development Program of Beijing Education Committee(No.KM201510005004,No.KM201410005002) Funding Project for Academic Human Resources Development in Institutions of Higher Learning under the Jurisdiction of Beijing Municipality 

主　　题：Face hallucination Local linear embedding(LLE) Coefficients prior model Manifold learning 

摘      要：In the most of exiting Local linear embedding(LLE)-based image super-resolution methods, a Low resolution(LR) image can be represented as a linear combination of LR training samples. In these methods, the combination coefficients of the LR image are directly used to estimate the High resolution(HR) image. However, experimental results show that the LR-LLE coefficients are different from the corresponding HR-LLE coefficients. To bridge the gap between LR and HR images, a novel LLEbased face hallucination algorithm is proposed. An LLE coefficients prior model is introduced to reduce the coefficient errors. In this prior model, the LLE coefficients of the interpolated LR face image are used to constraint the reconstructed coefficients. Experimental results show that the proposed method can provide improved performance over the compared methods.