Presentation of medical images on CRT displays: a renewed proposal for a display function standard

Hartwig R. Blume; Scott J. Daly; Edward Muka

doi:10.1117/12.146970

30 June 1993 Presentation of medical images on CRT displays: a renewed proposal for a display function standard

Hartwig R. Blume, Scott J. Daly, Edward Muka

Proceedings Volume 1897, Medical Imaging 1993: Image Capture, Formatting, and Display; (1993) https://doi.org/10.1117/12.146970
Event: Medical Imaging 1993, 1993, Newport Beach, CA, United States

Abstract

A mathematically defined standard display function is proposed for black-and-white hard and soft-copy image displays based on perceptual linearization. Since perceptual linearization is related to threshold contrast of targets with specific parameters, perceptually linearized display functions are calculated for a variety of target descriptors to illustrate the range of linearization by the proposed standard. Rogers and Carel's formula and the two-dimensional models of visual system sensitivity of Barten and Daly are used to calculate such display functions. The proposed standard provides perceptual linearization for the peak contrast sensitivity near 4 c/deg. The standard is adaptable to black-and-white display systems independent of maximum luminance and luminance range. Perceptual linearization is maintained largely independent of object size, external noise, observer performance variations, low supra-threshold contrast, target orientation, and ambient light. The standard facilitates similarity between the soft and hard-copy of an image independent of luminance. When using the standard function for displaying images, a minimum number of bits for the D/A converter is required that provides uniform digitization resolution over the entire display range. The standard display function, however, is not a visualization standard for images of specific applications.

Citation Download Citation

Hartwig R. Blume, Scott J. Daly, and Edward Muka "Presentation of medical images on CRT displays: a renewed proposal for a display function standard", Proc. SPIE 1897, Medical Imaging 1993: Image Capture, Formatting, and Display, (30 June 1993); https://doi.org/10.1117/12.146970

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