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Image Quality Criteria and the Enhancement of Digital Prints

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In order to design robust image-enhancement techniques for digital prints it is important to understand the fundamental image-quality criteria that provide the basis for satisfactory pictorial print reproduction. Properly established, these criteria are applicable independent of the analog or digital nature of the image, and any enhancement technique should at the least be carried out with an understanding of the before-and-after quality implications. Better still, in the ideal situation the criteria themselves can be used as an integral part of the original design tools during the construction of a systematic rather than an ad hoc set of image-processing techniques.

The present study illustrates the use of basic image quality metrics to construct systematic procedures for the enhancement of digital-print sharpness, and for the satisfactory rendering of images covering a wide range of brightness levels. In both cases this offers the possibility of adaptive and continuously-variable enhancement techniques which are both simple in operation and undemanding of computational resources, and some progress in these directions is reported here.

Document Type: Research Article

Publication date: January 1, 2001

More about this publication?
  • For more than 25 years, NIP has been the leading forum for discussion of advances and new directions in non-impact and digital printing technologies. A comprehensive, industry-wide conference, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems, including drop-on-demand ink jet, wide format ink jet, desktop and continuous ink jet, toner-based electrophotographic printers, production digital printing systems, and thermal printing systems, as well as the engineering capability, optimization, and science involved in these fields.

    Since 2005, NIP has been held in conjunction with the Digital Fabrication Conference.

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