| Autor: |
William J. Dallas, Elizabeth A. Krupinski, Jiahua Fan, Hans Roehrig, Kunal Gandhi, Malur K. Sundareshan |
| Rok vydání: |
2005 |
| Předmět: |
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| Zdroj: |
Medical Physics. 32:578-587 |
| ISSN: |
0094-2405 |
| DOI: |
10.1118/1.1855031 |
| Popis: |
Recent developments in liquid crystal display(LCD) technology suggest that this technology will replace the cathode ray tube (CRT) as the most popular softcopy display technology in the medical arena. However, LCDs are far from ideal for medical imaging. One of the principal problems they possess is spatial noise contamination, which requires accurate characterization and appropriate compensation before LCDimages can be effectively utilized for reliable diagnosis. This paper presents some work we have conducted recently on characterization of spatial noise of high resolution LCDs. The primary purpose of this work is to explore the properties of spatial noise and propose a method to reduce it. A high quality CCDcamera was used for physical evaluation. Spatial noise properties were analyzed and estimated from the cameraimages via signal modeling and processing. A noise compensation algorithm based on error diffusion was developed to process images before they were displayed. Results shown in this paper suggest that LCDspatial noise can be effectively reduced via appropriate processing. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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