Graph-based spatial-spectral feature learning for hyperspectral image classification

Muhammad Ahmad*, Adil Mehmood Khan, Rasheed Hussain

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

31 Citations (Scopus)

Abstract

Classifying hyperspectral data within high dimensionality is a challenging task. To cope with this issue, this study implements a semi-supervised multi-kernel class consistency regulariser graph-based spatial-spectral feature learning framework. For feature learning process, establishing the neighbouring relationship between the distinct samples from the highdimensional space is the key to a favourable outcome for classification. The proposed method implements two kernels and a class consistency regulariser. The first kernel constructs simple edges where every single vertex represents one particular sample and the edge weight encodes the initial similarity between distinct samples. Later the obtained relation is fed into the second kernel to obtain the final features for classification where the semi-supervised learning is conducted to estimate the grouping relations among different samples according to their similarity, class, and spatial information. To validate the performance of proposed framework, the authors conduct several experiments on three publically available hyperspectral datasets. The proposed work equates favourably with state-of-the-art works with an overall classification accuracy of 98.54, 97.83, and 98.38% for Pavia University, Salinas-A, and Indian Pines datasets, respectively.

Original languageEnglish
Pages (from-to)1310-1316
Number of pages7
JournalIET Image Processing
Volume11
Issue number12
DOIs
Publication statusPublished - 1 Dec 2017

Bibliographical note

Publisher Copyright:
© The Institution of Engineering and Technology.

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