Title :
A Black-White Representation of a Gray-Scale Picture
Author_Institution :
IBM Advanced System Development Division Laboratory
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 :
Dynamic thresholding, edge detection, image compression, image storage.; Compression algorithms; Data structures; Filters; Graphics; Gray-scale; Heuristic algorithms; Image coding; Image edge detection; Image storage; Spatial resolution; Dynamic thresholding, edge detection, image compression, image storage.;
Journal_Title :
Computers, IEEE Transactions on
DOI :
10.1109/T-C.1974.223883
