Digital halftoning / Robert Ulichney.
By: Ulichney, Robert [author.]
.
Contributor(s): IEEE Xplore (Online Service) [distributor.] | MIT Press [publisher.].
Material type: 
BookPublisher: Cambridge, Massachusetts : MIT Press, c1987Distributor: [Piscataqay, New Jersey] : IEEE Xplore, [1987]Description: 1 PDF (xiv, 362 pages) : illustrations.Content type: text Media type: electronic Carrier type: online resourceISBN: 9780262291026.Subject(s): Computer graphics | Image processing -- Digital techniquesGenre/Form: Electronic books.Additional physical formats: Print version: No titleDDC classification: 006.6 Online resources: Abstract with links to resource Also available in print.Summary: Along with text and graphics, images are fast becoming a generic data type for general-purpose computer systems. This poses new problems for the systems designer, who must be able to preprocess digital image data for a wide variety of video and hard copy displays. Digital halftoning, the method by which the illusion of continuous-tone images are created through the arrangement of binary picture elements, is a key component of any preprocessing.Digital Halftoning addresses the problem of developing algorithms that best match the specific parameters of any target display device. It is the first significant study of the process of producing quality images on practical computer displays.To aid the systems designer, Ulichney devises the concept of blue noise - which has many desirable properties for halftoning - and suggests efficient algorithms for its use. He also introduces new metrics for analyzing the frequency content of periodic and aperiodic patterns for both rectangular and hexagonal grids, and presents a unique "aspect ratio immunity" argument in favor of hexagonal grids. Included are several carefully selected digitally-produced images.Robert Ulichney is Principle Engineer with the Digital Equipment Corporation.
"Based on a ... Ph. D. thesis at M.I.T. in 1986 entitled 'Digital halftoning and the physical reconstruction function'"--Pref.
Includes bibliographical references (p. [351]-358) and index.
Restricted to subscribers or individual electronic text purchasers.
Along with text and graphics, images are fast becoming a generic data type for general-purpose computer systems. This poses new problems for the systems designer, who must be able to preprocess digital image data for a wide variety of video and hard copy displays. Digital halftoning, the method by which the illusion of continuous-tone images are created through the arrangement of binary picture elements, is a key component of any preprocessing.Digital Halftoning addresses the problem of developing algorithms that best match the specific parameters of any target display device. It is the first significant study of the process of producing quality images on practical computer displays.To aid the systems designer, Ulichney devises the concept of blue noise - which has many desirable properties for halftoning - and suggests efficient algorithms for its use. He also introduces new metrics for analyzing the frequency content of periodic and aperiodic patterns for both rectangular and hexagonal grids, and presents a unique "aspect ratio immunity" argument in favor of hexagonal grids. Included are several carefully selected digitally-produced images.Robert Ulichney is Principle Engineer with the Digital Equipment Corporation.
Also available in print.
Mode of access: World Wide Web
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