A Black-White Representation of a Gray-Scale Picture

1 February 1974

journal article
Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Computers

Vol. C-23 (2) , 184-186
https://doi.org/10.1109/T-C.1974.223883

Abstract

A hardware-implemented algorithm combining dynamic thresholding and edge detection allows black-white representation of gray-scale images for computer storage. The output resembles a highly detailed sketch, with resolution and contrast superior to a halftone representation. The same algorithm can be applied to text and line drawings, so that all three types of images can be stored using the same compression algorithm.

Keywords

COMPRESSION
TEXT
GRAY
PICTURE
OUTPUT
BLACK WHITE
WHITE REPRESENTATION