Grayscale standard display function on LCD color monitors

Denis De Monte; Carlo Casale; Luigi Albani; Silvio Bonfiglio

doi:10.1117/12.708221

8 March 2007 Grayscale standard display function on LCD color monitors

Denis De Monte, Carlo Casale, Luigi Albani, Silvio Bonfiglio

Proceedings Volume 6515, Medical Imaging 2007: Image Perception, Observer Performance, and Technology Assessment; 65150N (2007) https://doi.org/10.1117/12.708221
Event: Medical Imaging, 2007, San Diego, CA, United States

Abstract

Currently, as a rule, digital medical systems use monochromatic Liquid Crystal Display (LCD) monitors to ensure an accurate reproduction of the Grayscale Standard Display Function (GSDF) as specified in the Digital Imaging and Communications in Medicine (DICOM) Standard. As a drawback, special panels need to be utilized in digital medical systems, while it would be preferable to use regular color panels, which are manufactured on a wide scale and are thus available at by far lower prices. The method proposed introduces a temporal color dithering technique to accurately reproduce the GSDF on color monitors without losing monitor resolution. By exploiting the characteristics of the Human Visual System (HVS) the technique ensures that a satisfactory grayscale reproduction is achieved minimizing perceivable flickering and undesired color artifacts. The algorithm has been implemented in the monitor using a low-cost Field Programmable Gate Array (FPGA). Quantitative evaluations of luminance response on a 3 Mega-pixel color monitor have shown that the compliance with the GSDF can be achieved with the accuracy level required by medical applications. At the same time the measured color deviation is below the threshold perceivable by the human eye.

Citation Download Citation

Denis De Monte, Carlo Casale, Luigi Albani, and Silvio Bonfiglio "Grayscale standard display function on LCD color monitors", Proc. SPIE 6515, Medical Imaging 2007: Image Perception, Observer Performance, and Technology Assessment, 65150N (8 March 2007); https://doi.org/10.1117/12.708221

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KEYWORDS

LCDs

Medical imaging

Telecommunications

Visual system

Visualization

Colorimetry

Data communications

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