Dynamic dimensionality reduction for hyperspectral imagery

Haleh Safavi; Keng-Hao Liu; Chein-I Chang

doi:10.1117/12.884649

20 May 2011 Dynamic dimensionality reduction for hyperspectral imagery

Haleh Safavi, Keng-Hao Liu, Chein-I Chang

Proceedings Volume 8048, Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XVII; 80481I (2011) https://doi.org/10.1117/12.884649
Event: SPIE Defense, Security, and Sensing, 2011, Orlando, Florida, United States

Abstract

Data dimensionality (DR) is generally performed by first fixing size of DR at a certain number, say p and then finding a technique to reduce an original data space to a low dimensional data space with dimensionality specified by p. This paper introduces a new concept of dynamic dimensionality reduction (DDR) which considers the parameter p as a variable by varying the value of p to make p adaptive compared to the commonly used DR, referred to as static dimensionality reduction (SDR) with the parameter p fixed at a constant value. In order to materialize the DDR another new concept, referred to as progressive DR (PDR) is also developed so that the DR can be performed progressively to adapt the variable size of data dimensionality determined by varying the value of p. The advantages of the DDR over SDR are demonstrated through experiments conducted for hyperspectral image classification.

Citation Download Citation

Haleh Safavi, Keng-Hao Liu, and Chein-I Chang "Dynamic dimensionality reduction for hyperspectral imagery", Proc. SPIE 8048, Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XVII, 80481I (20 May 2011); https://doi.org/10.1117/12.884649

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