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 language | English (US) |
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Pages (from-to) | 433-443 |
Number of pages | 11 |
Journal | Proceedings of SPIE - The International Society for Optical Engineering |
Volume | 5367 |
DOIs | |
State | Published - 2004 |
Event | Progress in Biomedical Optics and Imaging 2004 - Medical Imaging: Visualization, Image-Guided Procedures, and Display - San Diego, CA, United States Duration: Feb 15 2004 → Feb 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