UM
Quaternion Locality-Constrained Coding for Color Face Hallucination
Liu, Licheng; Li, Shutao; Chen, C. L. Philip
2018-05
Source PublicationIEEE TRANSACTIONS ON CYBERNETICS
ISSN2168-2267
Volume48Issue:5Pages:1474-1485
AbstractRecently, the locality linear coding (LLC) has attracted more and more attentions in the areas of image processing and computer vision. However, the conventional LLC with real setting is just designed for the grayscale image. For the color image, it usually treats each color channel individually or encodes the monochrome image by concatenating all the color channels, which ignores the correlations among different channels. In this paper, we propose a quaternion-based locality-constrained coding (QLC) model for color face hallucination in the quaternion space. In QLC, the face images are represented as quaternion matrices. By transforming the channel images into an orthogonal feature space and encoding the coefficients in the quaternion domain, the proposed QLC is expected to learn the advantages of both quaternion algebra and locality coding scheme. Hence, the QLC cannot only expose the true topology of image patch manifold but also preserve the inherent correlations among different color channels. Experimental results demonstrated that our proposed QLC method achieved superior performance in color face hallucination compared with other state-of-the-art methods.
KeywordColor image processing face hallucination image super-resolution locality-constrained coding (LCC) quaternion algebra
DOI10.1109/TCYB.2017.2703134
URLView the original
Indexed BySCI ; SSCI
Language英语
WOS Research AreaAutomation & Control Systems ; Computer Science
WOS SubjectAutomation & Control Systems ; Computer Science, Artificial Intelligence ; Computer Science, Cybernetics
WOS IDWOS:000429247700011
PublisherIEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
The Source to ArticleWOS
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Cited Times [WOS]:11   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Recommended Citation
GB/T 7714
Liu, Licheng,Li, Shutao,Chen, C. L. Philip. Quaternion Locality-Constrained Coding for Color Face Hallucination[J]. IEEE TRANSACTIONS ON CYBERNETICS,2018,48(5):1474-1485.
APA Liu, Licheng,Li, Shutao,&Chen, C. L. Philip.(2018).Quaternion Locality-Constrained Coding for Color Face Hallucination.IEEE TRANSACTIONS ON CYBERNETICS,48(5),1474-1485.
MLA Liu, Licheng,et al."Quaternion Locality-Constrained Coding for Color Face Hallucination".IEEE TRANSACTIONS ON CYBERNETICS 48.5(2018):1474-1485.
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