Spatial noise of high resolution liquid crystal displays for medical imaging: Quantitative analysis, estimation and compensation

Jiahua Fan, William J. Dallas, Hans Roehrig, Elizabeth Krupinski, Kunal Gandhi, Malur K. Sundareshan

Research output: Contribution to journalConference articlepeer-review

3 Scopus citations

Abstract

Recent developments in Liquid Crystal Display (LCD) technology suggest that they will replace the Cathode Ray Tube (CRT) as the most common softcopy display in the medical arena. But LCDs are far from ideal for medical imaging. One of the problems they possess is spatial noise. This paper presents some work we have conducted recently on spatial noise of high resolution LCDs. The purpose of this work is to explore the properties of spatial noise and the method to reduce them. A high quality CCD camera is used for physical evaluation. Spatial noise properties are analyzed and estimated from the camera images via signal modeling and processing. Noise compensation algorithm based on error diffusion is developed to process images before they are displayed. Some initial results shown in this paper suggest that LCD spatial noise can be eliminated via appropriate processing.

Original languageEnglish (US)
Pages (from-to)433-443
Number of pages11
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume5367
DOIs
StatePublished - Oct 27 2004
EventProgress in Biomedical Optics and Imaging 2004 - Medical Imaging: Visualization, Image-Guided Procedures, and Display - San Diego, CA, United States
Duration: Feb 15 2004Feb 17 2004

Keywords

  • CCD camera
  • Error diffusion
  • LCD
  • MMSE
  • Spatial noise

ASJC Scopus subject areas

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

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