Author: Tsui, Wai Yiu
Title: Probabilistic collaborative representation for hyperspectral image classification
Advisors: Zhang, Lei (COMP)
Degree: M.Sc.
Year: 2018
Subject: Hong Kong Polytechnic University -- Dissertations
Remote sensing
Multispectral imaging
Image processing -- Digital techniques
Department: Department of Computing
Pages: xiii, 122 pages : color illustrations
Language: English
Abstract: Hyperspectral Image Classification can classify distinct material constituents in hyperspectral data collected by remote sensor [1]. Sparse representation classifier (SRC) and collaborative representation classifier (CRC) are broadly adopted in image classification field. Zhang et al. [2] argued that l2-norm of collaborative representation instead of the l1- norm involved in sparse representation gives a good performance in image classification, whilst probabilistic collaborative representation classifier (ProCRC) explains the good performance of CRC involving l2-norm by exploiting the knowledge of the type of variation that being critical in expressing similarity [3]. This study would first aim at evaluating the performance of ProCRC on hyperspectral image classification. Concerning the curse of dimensionality [4] in hyperspectral image classification, kernel-based classification methods are widely adopted in hyperspectral image classification for mapping the image data to a higher dimensionality for better classification performance. This study would also propose a novel Kernel Probabilistic Collaborative Representation Classifier (KProCRC) for hyperspectral image classification. Experiments with four publicly available real hyperspectral image data sets would demonstrate that the ProCRC can outperform SRC and CRC in terms of classification accuracies, whilst the KProCRC can outperform CRC and ProCRC in terms of classification accuracies.
Rights: All rights reserved
Access: restricted access

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