Extending the channelized Hotelling observer to account for signal uncertainty and estimation tasks

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

In medicine, images are taken so that specific tasks can be performed. Thus, any measure of image quality must account for the task the images are to be used for and the observer performing the task. Performing task-based optimizations using human observers is generally difficult, time consuming, expensive and, in the case of hardware optimizations, not necessarily ideal. Model observers have been successfully used in place of human observers. The channelized Hotelling observer is one such model observer. Depending on the choice of channels, the channelized Hotelling observer can be used to either predict human-observer performance or as an ideal observer. This paper will focus on the use of the channelized Hotelling observer as an approximation of the ideal linear observer. Laguerre Gauss channels have proven useful for ideal-observer computations, but these channels are somewhat limited because they require the signal to be known exactly both in terms of location and shape. In fact, the Laguerre Gauss channels require the signal to be radially symmetric. We have devised a new method of determining efficient channels that does not require the signal to be symmetric and can even account for signal variability. This method can even be used for linear estimation tasks. We have compared the performances of the channelized Hotelling observer using both this new set of channels and the Laguerre Gauss channels for a signal-known-exactly detection task, and found that they correlate.

Original languageEnglish (US)
Title of host publicationProgress in Biomedical Optics and Imaging - Proceedings of SPIE
EditorsM.P. Eckstein, Y. Jiang
Pages183-190
Number of pages8
Volume5749
DOIs
StatePublished - 2005
EventMedical Imaging 2005 - Image Perception, Observer Performance, and Technology Assessment - San Diego, CA, United States
Duration: Feb 15 2005Feb 17 2005

Other

OtherMedical Imaging 2005 - Image Perception, Observer Performance, and Technology Assessment
CountryUnited States
CitySan Diego, CA
Period2/15/052/17/05

Fingerprint

Observer
Uncertainty
Image quality
Medicine
Hardware
Gauss
optimization
medicine
hardware
Linear Estimation
Optimization
Image Quality
Correlate
approximation
Predict

Keywords

  • Channelized Hotelling observer
  • Eigenvalue decomposition
  • Image quality

ASJC Scopus subject areas

  • Engineering(all)
  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Kupinski, M. A., & Clarkson, E. W. (2005). Extending the channelized Hotelling observer to account for signal uncertainty and estimation tasks. In M. P. Eckstein, & Y. Jiang (Eds.), Progress in Biomedical Optics and Imaging - Proceedings of SPIE (Vol. 5749, pp. 183-190). [21] https://doi.org/10.1117/12.595680

Extending the channelized Hotelling observer to account for signal uncertainty and estimation tasks. / Kupinski, Matthew A; Clarkson, Eric W.

Progress in Biomedical Optics and Imaging - Proceedings of SPIE. ed. / M.P. Eckstein; Y. Jiang. Vol. 5749 2005. p. 183-190 21.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Kupinski, MA & Clarkson, EW 2005, Extending the channelized Hotelling observer to account for signal uncertainty and estimation tasks. in MP Eckstein & Y Jiang (eds), Progress in Biomedical Optics and Imaging - Proceedings of SPIE. vol. 5749, 21, pp. 183-190, Medical Imaging 2005 - Image Perception, Observer Performance, and Technology Assessment, San Diego, CA, United States, 2/15/05. https://doi.org/10.1117/12.595680
Kupinski MA, Clarkson EW. Extending the channelized Hotelling observer to account for signal uncertainty and estimation tasks. In Eckstein MP, Jiang Y, editors, Progress in Biomedical Optics and Imaging - Proceedings of SPIE. Vol. 5749. 2005. p. 183-190. 21 https://doi.org/10.1117/12.595680
Kupinski, Matthew A ; Clarkson, Eric W. / Extending the channelized Hotelling observer to account for signal uncertainty and estimation tasks. Progress in Biomedical Optics and Imaging - Proceedings of SPIE. editor / M.P. Eckstein ; Y. Jiang. Vol. 5749 2005. pp. 183-190
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