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Repurposing Device-dependent Screens for Unintended Printers

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Screened images of 1-bit depth are common in the office market and in graphic-arts printing systems. Bitmapped screens are produced at the copier scanner, copy-dot scanners and in the Digital Front End (DFE) as “digital negatives.” Raster-once-output-many (ROOM) is an example of a digital negative. Such bilevel images are printer device specific. The bilevel image may be inappropriate for the printer in use and the original image may be unavailable.

While inverse halftone is a common solution for repurposing screened images, it results in lower quality reproduction:

• Inverse halftoning requires further density compensation for the requirements of the new printer.

• Much of the original image information is lost in the depth to frequency conversion and inverse halftoning cannot reclaim the lost image data.

• Rescreening a reverse-halftone image results in loss of high-spatial frequency image data.

The goal of the algorithm described is to increase screen-repurposing performance and maintain high-frequency detail without inverting the 1-bit image to 8-bit.
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Document Type: Research Article

Publication date: 2001-01-01

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.

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