New efficient representation of photographic images with restricted number of gray levels

Seppo Linnainmaa

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

1 Citation (Scopus)

Abstract

Variations of existing methods are presented to produce high quality representations of black and white photographic images even when only a very restricted number of gray levels can be used on the available displays in printers. The cost-effective methods are based on error diffusion and Hilbert curver traversal. Solutions are given to certain slight problems that arise when the basic idea is applied in too straightforward a manner. Images printed on a laser printer have an extraordinarily close resemblance to real photographs, and even eight gray levels seems to be sufficient for displaying crisp images. The results indicate that two pixels could well be stored in each byte, reducing the required space by half for images meant for display purposes only.
Original languageEnglish
Title of host publication9th International Conference on Pattern Recognition
PublisherIEEE Institute of Electrical and Electronic Engineers
Pages143-145
ISBN (Print)0-8186-0878-1
DOIs
Publication statusPublished - 1988
MoE publication typeA4 Article in a conference publication
Event9th International Conference on Pattern Recognition - Rome, Italy
Duration: 14 Nov 198817 Nov 1988

Conference

Conference9th International Conference on Pattern Recognition
Country/TerritoryItaly
CityRome
Period14/11/8817/11/88

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