Validating the use of channels to estimate the ideal linear observer

Brandon D. Gallas, Harrison H Barrett

Research output: Contribution to journalArticle

118 Scopus citations

Abstract

Image quality can be objectively defined according to how well an observer can perform a task of practical interest given the image. We review a practical model observer for the signal-detection task. The ideal observer for this task is a function of the image probability distributions, which are multidimensional and complicated. This observer is often too difficult to derive or estimate. An alternative to the ideal observer is the ideal linear observer, which can still be unmanageable. Our alternative is the ideal linear observer constrained to a small set of channels: the channelized-Hotelling observer.

Original languageEnglish (US)
Pages (from-to)1725-1738
Number of pages14
JournalJournal of the Optical Society of America A: Optics and Image Science, and Vision
Volume20
Issue number9
Publication statusPublished - 2003

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Computer Vision and Pattern Recognition

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