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Journal of the Optical Society of America A

Journal of the Optical Society of America A

| OPTICS, IMAGE SCIENCE, AND VISION

  • Editor: Franco Gori
  • Vol. 30, Iss. 6 — Jun. 1, 2013
  • pp: 1039–1052

Acquisition and visualization techniques for narrow spectral color imaging

László Neumann, Rafael García, János Basa, and Ramón Hegedüs  »View Author Affiliations


JOSA A, Vol. 30, Issue 6, pp. 1039-1052 (2013)
http://dx.doi.org/10.1364/JOSAA.30.001039


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Abstract

This paper introduces a new approach in narrow-band imaging (NBI). Existing NBI techniques generate images by selecting discrete bands over the full visible spectrum or an even wider spectral range. In contrast, here we perform the sampling with filters covering a tight spectral window. This image acquisition method, named narrow spectral imaging, can be particularly useful when optical information is only available within a narrow spectral window, such as in the case of deep-water transmittance, which constitutes the principal motivation of this work. In this study we demonstrate the potential of the proposed photographic technique on nonunderwater scenes recorded under controlled conditions. To this end three multilayer narrow bandpass filters were employed, which transmit at 440, 456, and 470 nm bluish wavelengths, respectively. Since the differences among the images captured in such a narrow spectral window can be extremely small, both image acquisition and visualization require a novel approach. First, high-bit-depth images were acquired with multilayer narrow-band filters either placed in front of the illumination or mounted on the camera lens. Second, a color-mapping method is proposed, using which the input data can be transformed onto the entire display color gamut with a continuous and perceptually nearly uniform mapping, while ensuring optimally high information content for human perception.

© 2013 Optical Society of America

OCIS Codes
(330.1720) Vision, color, and visual optics : Color vision
(330.6180) Vision, color, and visual optics : Spectral discrimination
(110.4234) Imaging systems : Multispectral and hyperspectral imaging
(010.7295) Atmospheric and oceanic optics : Visibility and imaging

ToC Category:
Imaging Systems

History
Original Manuscript: November 20, 2012
Revised Manuscript: March 24, 2013
Manuscript Accepted: March 24, 2013
Published: May 6, 2013

Virtual Issues
Vol. 8, Iss. 7 Virtual Journal for Biomedical Optics

Citation
László Neumann, Rafael García, János Basa, and Ramón Hegedüs, "Acquisition and visualization techniques for narrow spectral color imaging," J. Opt. Soc. Am. A 30, 1039-1052 (2013)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-30-6-1039

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