Skip to main content

Edge Enhancement for Good Image Quality in Digital Halftoning

Buy Article:

$12.00 plus tax (Refund Policy)

Digital halftoning algorithm is a method for representing a continuous tone image with a few discrete level of output-device. Most representative two methods of halftoning are screening (or dithering) and error diffusion. Specially, clustered screening has a fast processing speed and robustness to printer distortion and laser bean printer uses it generally. But, it has a poor quality in detail region, because of screen table's LPI geometry. In general, screen table mostly have 150∼200 LPI. That LPI is not sufficient to represent a good quality at image edge. Our proposal improves the quality of detail region by using edge map and edge-optimized table at edge region differentiated from non-edge region. Edge-optimized screen is not a simple higher LPI screen than non-edge region. We have investigated the best dot-addition position for good edge image quality in visually at each screen table. And then, we composed the edge optimized screen table that makes it. If the image is edge region, edge-optimized screen is used. If not, we use default screen. We show the result screening images in simulated output and scanned image of real hard copy output in laser printer compared with previous methods.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Data/Media
No Metrics

Document Type: Research Article

Publication date: 2011-01-01

More about this publication?
  • For more than 30 years, IS&T's series of digital printing conferences have been the leading forum for discussion of advances and new directions in 2D and 3D printing technologies. A comprehensive, industry-wide conference that brings together industry and academia, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems?particularly those involved with additive manufacturing and fabrication?including bio-printing, printed electronics, page-wide, drop-on-demand, desktop and continuous ink jet, toner-based systems, and production digital printing, as well as the engineering capability, optimization, and science involved in these fields. In 2016, the conference changed its name formally to Printing for Fabrication to better reflect the content of the meeting and the evolving technology of printing.

    Please note: For purposes of its Digital Library content, IS&T defines Open Access as papers that will be downloadable in their entirety for free in perpetuity. Copyright restrictions on papers vary; see individual paper for details.

  • Information for Authors
  • Submit a Paper
  • Subscribe to this Title
  • Membership Information
  • Terms & Conditions
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
X
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more