gray scale

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gray scale

[′grā ‚skāl]
(optics)
A series of achromatic tones having varying proportions of white and black, to give a full range of grays between white and black; a gray scale is usually divided into 10 steps; however, electronic scanners can typically differentiate 16 to 256 levels.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

gray scale

A series of achromatic samples in discrete steps in lightness from white to black.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.

gray scale

A series of shades from white to black. The more shades, or levels, the more realistic an image can be recorded and displayed, especially a scanned photo. Scanners differentiate typically from 16 to 256 gray levels, and high-resolution gray scale is widely used for medical x-rays.

At a resolution of 300 dpi, each square inch comprises 90K pixels (300x300). At one byte per pixel (256 levels), a 10x10" image would take up 9MB of storage (90K x 100). See halftone.
Copyright © 1981-2019 by The Computer Language Company Inc. All Rights reserved. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction is strictly prohibited without permission from the publisher.
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