Jump to content United States-English
HP.com Home Products and Services Support and Drivers Solutions How to Buy
» Contact HP

HP.com home

ImageSmart Halftoning


HP Labs

» Research
» News and events
» Technical reports
» About HP Labs
» Careers @ HP Labs
» People
» Worldwide sites
» Downloads
Content starts here
Different halftoning algorithms are best for different types of images and different types of printers. For example, error diffusion is good at producing image details. In flat regions, it often has visible artifacts such as worms that are difficult to get rid of. Color smooth dither, on the other hand, produces smooth textures in flat regions, but is usually less sharp for lack of feedback. ImageSmart is a technology for integrating different halftoning algorithms and managing their transitions in a single image.

This is especially important in rendering a scanned document, where there is a mixture of text, line art and area fill, and raster image. However, the driver does not have any information regarding the composition of the page. ImageSmart automaticaly selects a halftoning algorithm based on image content


Q. Lin and J. Allebach, "Color FM screen design using DBS algorithm",  Proceedings, SPIE Electronic Imaging Conference: Color Imaging: Device-Independent Color, Color Hardcopy and Graphic Arts III, vol. 3300, pp. 353-361, January 1998.
  » Embedded distributed systems
  » Halftoning
  » Image and video processing
  » Multimedia asset management
  » New rich media
Halftoning research links
» Reviews/Tutorials
» Digital halftoning book
» Purdue University
» The University of Texas at Austin
»Imaging Systems Laboratory
Printable version
Privacy statement Using this site means you accept its terms Feedback to HP Labs
© 2009 Hewlett-Packard Development Company, L.P.