NDLI: Semi-supervised uncorrelated dictionary learning for colour face recognition

Content Provider	IET Digital Library
Author	Liu, Qian Jiang, Bo Zhang, Jia lei Gao, Peng Xia, Zhi jian
Abstract	Colour images are increasingly used in the fields of computer vision, pattern recognition and machine learning, since they can provide more identifiable information than greyscale images. Thus, colour face recognition has attracted accumulating attention. Its key problem is how to remove the similarity between colour component images and take full advantage of colour difference information. Decision-level similarity reduction between colour component images directly affects the recognition effect, but it has been found in no work. In this study, the authors propose a novel colour face recognition approach named semi-supervised uncorrelated dictionary learning (SUDL), which realises decision-level similarity reduction and fusion of all colour components in face images. SUDL employs the labelled and unlabelled colour face image samples into structured dictionary learning to achieve three uncorrelated discriminating dictionaries corresponding to three colour components of face images, and then uses these dictionaries and the sparse coding technique to make a classification decision. Experimental results in multiple public colour face image databases demonstrate that the dictionary decorrelation, structured dictionary learning and unlabelled samples used in the proposed approach are effective and reasonable, and the proposed approach outperforms several representative colour face recognition methods in recognition rates, despite of its poor time performance.
Starting Page	92
Ending Page	100
Page Count	9
ISSN	17519632
Volume Number	14
e-ISSN	17519640
Issue Number	Issue 3, Apr (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-cvi/14/3
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-cvi.2019.0125
Journal	IET Computer Vision
Publisher Date	2020-02-19
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Colour Component Colour Component Image Colour Difference Information Colour Face Recognition Approach Colour Image Computer Vision Computer Vision And Image Processing Technique Decision-level Similarity Reduction Dictionary Decorrelation Face Image Face Recognition Feature Extraction Greyscale Image Image Colour Analysis Image Recognition Knowledge Engineering Technique Labelled Colour Face Image Sample Learning in AI Machine Learning Multiple Public Colour Face Image Database Pattern Classification Pattern Recognition Recognition Effect Recognition Rates Representative Colour Face Recognition Method Semisupervised Uncorrelated Dictionary Learning Spatial And Pictorial Database Structured Dictionary Learning Uncorrelated Discriminating Dictionaries Unlabelled Colour Face Image Sample Visual Database
Content Type	Text
Resource Type	Article
Subject	Computer Vision and Pattern Recognition Software

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