1 July 1990 Comparison of the physical performance of high-resolution CRT displays and films recorded by laser image printers and displayed on light-boxes and the need for a display standard
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Proceedings Volume 1232, Medical Imaging IV: Image Capture and Display; (1990); doi: 10.1117/12.18846
Event: Medical Imaging '90, 1990, Newport Beach, CA, United States
Abstract
Performance figures are reported on absolute luminance, luminance uniformity, characteristic display function, internal scatter, dynamic range, distortion, modulation transfer and its spatial uniformity, and temporal and spatial noise of two commercial ORT display systems as well as films printed by laser image recorders and displayed on light-boxes. One of the ORT displays has a matrix of nominally 2000 x 2000 pixels, the other of 1000 x 1500 pixels. The laser image recorders cover a matrix of 3500 x 2200 pixels. When comparing equal pixel matrices of hard versus soft copy displays, typically hard copies facilitate greater information transfer than soft copies due to a presentation with higher absolute luminance, greater perceived dyiiainic range, and better spatial resolution. Perceived dynamic range and resolution are partially degraded in the ORT displays by internal scatter. Soft and hard copy displays are about equivalent in terms of luminance non-uniformity, noise, and geometrical distortion. All displays differ in their characteristic display functions and thus in perceived contrast resolution. A display function standard is proposed to the industry by which mismatches between hard and soft copy presentations can be nimized as well as means for maintaining standardized performance.
© (1990) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Hartwig R. Blume, Hans Roehrig, Michael P. Browne, Tinglan Ji, "Comparison of the physical performance of high-resolution CRT displays and films recorded by laser image printers and displayed on light-boxes and the need for a display standard", Proc. SPIE 1232, Medical Imaging IV: Image Capture and Display, (1 July 1990); doi: 10.1117/12.18846; https://doi.org/10.1117/12.18846
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KEYWORDS
CRTs

Modulation

Medical imaging

Hardcopies

Image quality

Signal to noise ratio

Image quality standards

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