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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. 7 — Jul. 27, 2011

Channelized Hotelling observers for the assessment of volumetric imaging data sets

Ljiljana Platiša, Bart Goossens, Ewout Vansteenkiste, Subok Park, Brandon D. Gallas, Aldo Badano, and Wilfried Philips  »View Author Affiliations


JOSA A, Vol. 28, Issue 6, pp. 1145-1163 (2011)
http://dx.doi.org/10.1364/JOSAA.28.001145


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Abstract

Current clinical practice is rapidly moving in the direction of volumetric imaging. For two-dimensional (2D) images, task-based medical image quality is often assessed using numerical model observers. For three- dimensional (3D) images, however, these models have been little explored so far. In this work, first, two novel designs of a multislice channelized Hotelling observer (CHO) are proposed for the task of detecting 3D signals in 3D images. The novel designs are then compared and evaluated in a simulation study with five different CHO designs: a single-slice model, three multislice models, and a volumetric model. Four different random background statistics are considered, both Gaussian (noncorrelated and correlated Gaussian noise) and non-Gaussian (lumpy and clustered lumpy backgrounds). Overall, the results show that the volumetric model outperforms the others, while the disparity between the models decreases for greater complexity of the detection task. Among the multislice models, the second proposed CHO could most closely approach the volumetric model, whereas the first new CHO seems to be least affected by the number of training samples.

© 2011 Optical Society of America

OCIS Codes
(110.2960) Imaging systems : Image analysis
(110.2970) Imaging systems : Image detection systems
(110.3000) Imaging systems : Image quality assessment
(330.1880) Vision, color, and visual optics : Detection
(330.5510) Vision, color, and visual optics : Psychophysics
(110.4155) Imaging systems : Multiframe image processing

ToC Category:
Imaging Systems

History
Original Manuscript: March 16, 2010
Revised Manuscript: March 1, 2011
Manuscript Accepted: March 4, 2011
Published: May 20, 2011

Virtual Issues
Vol. 6, Iss. 7 Virtual Journal for Biomedical Optics

Citation
Ljiljana Platiša, Bart Goossens, Ewout Vansteenkiste, Subok Park, Brandon D. Gallas, Aldo Badano, and Wilfried Philips, "Channelized Hotelling observers for the assessment of volumetric imaging data sets," J. Opt. Soc. Am. A 28, 1145-1163 (2011)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=josaa-28-6-1145


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