Lossless compression of dithered images with the pseudo-distance technique

Basar Koc, Ziya Arnavut, Huseyin Kocak

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations

Abstract

Despite many advances, still image storage and transfer, particularly in low-cost devices, remain to be important problems. For example, some wireless phone displays do not have the capacity to handle true colors. To remedy this problem, a color quantization (color palette) technique is often applied to images in order to reduce the number of colors. However, to avoid the side effects of the color-quantization, usually a process called dithering is applied to quantized images. Dithering techniques approximate colors which are not available in the palette by utilizing a diffusion technique of colored pixels from within the available palette. In this work, we examine compression of color-quantized images with different dithering techniques and show that the recently introduced modified pseudo-distance technique yields better compression results than the well-known GIF and PNG techniques.

Original languageEnglish (US)
Title of host publication2012 9th International Conference on High Capacity Optical Networks and Enabling Technologies, HONET 2012
Pages147-151
Number of pages5
DOIs
StatePublished - Dec 1 2012
Event2012 9th International Conference on High Capacity Optical Networks and Enabling Technologies, HONET 2012 - Istanbul, Turkey
Duration: Dec 14 2012Dec 14 2012

Publication series

Name2012 9th International Conference on High Capacity Optical Networks and Enabling Technologies, HONET 2012

Other

Other2012 9th International Conference on High Capacity Optical Networks and Enabling Technologies, HONET 2012
Country/TerritoryTurkey
CityIstanbul
Period12/14/1212/14/12

Keywords

  • Color palette
  • Dithering
  • GIF
  • Image compression
  • PNG
  • Pseudo-distance Metric

ASJC Scopus subject areas

  • Information Systems
  • Signal Processing
  • Electrical and Electronic Engineering
  • Communication

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