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Proceedings Paper

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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Paper 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.

Paper Details

Date Published: 1 July 1990
PDF: 18 pages
Proc. SPIE 1232, Medical Imaging IV: Image Capture and Display, (1 July 1990); doi: 10.1117/12.18846
Show Author Affiliations
Hartwig R. Blume, Philips Medical Systems, Inc. (United States)
Hans Roehrig, Univ. of Arizona (United States)
Michael P. Browne, Univ. of Arizona (United States)
Tinglan Ji, Univ. of Arizona (United States)

Published in SPIE Proceedings Vol. 1232:
Medical Imaging IV: Image Capture and Display
Yongmin Kim, Editor(s)

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