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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 6, Iss. 8 — Aug. 26, 2011

Class-based spectral reconstruction based on unmixing of low-resolution spectral information

Yuri Murakami, Masahiro Yamaguchi, and Nagaaki Ohyama  »View Author Affiliations


JOSA A, Vol. 28, Issue 7, pp. 1470-1481 (2011)
http://dx.doi.org/10.1364/JOSAA.28.001470


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Abstract

This paper proposes a class-based spectral estimation method for high-resolution red, green, and blue (RGB) images and corresponding low-resolution spectral data. Each spectrum in the low-resolution data is assumed to be a mixture of spectra of different classes. Then, the spectral estimation matrix for every class is derived using a regression approach, in which the clustering results of the high-resolution RGB image are used to incorporate spectral unmixing. Experiments confirm reduced normalized root mean squared error for the spectral images if the number of classes in the clustering is appropriately selected. In addition, the experimental results show that the spectra are accurately reconstructed even when they are observed as mixed spectra in the low-resolution data.

© 2011 Optical Society of America

OCIS Codes
(100.3010) Image processing : Image reconstruction techniques
(100.3190) Image processing : Inverse problems
(330.1690) Vision, color, and visual optics : Color
(110.1758) Imaging systems : Computational imaging
(110.4234) Imaging systems : Multispectral and hyperspectral imaging

ToC Category:
Image Processing

History
Original Manuscript: March 11, 2011
Revised Manuscript: April 19, 2011
Manuscript Accepted: May 4, 2011
Published: June 27, 2011

Virtual Issues
Vol. 6, Iss. 8 Virtual Journal for Biomedical Optics

Citation
Yuri Murakami, Masahiro Yamaguchi, and Nagaaki Ohyama, "Class-based spectral reconstruction based on unmixing of low-resolution spectral information," J. Opt. Soc. Am. A 28, 1470-1481 (2011)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=josaa-28-7-1470

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