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Estimating of Quality Parameters of Convex Copies for the Blind

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Abstract:

The development of convex copies has important aspect on education and life of the blind. Convex copies on capsule paper are used in education as maps and as information papers for the blind. Quality and quantify control of image parameters may be come a tool for the evaluation of convex copies. Quantitative and objective quality control of convex prints could help to improve the design and performance of Braille copiers.

In the paper we present the attempt and measurements of the parameters (high of the convexity, non-uniformity of the shape of Braille points, diameter of Braille point), influencing the perceived quality of Braille printouts. We also present trial determination of a combined index of the quality of the Braille characters and convex copies of graphics. In order to improve the design of the copying device on microcapsule paper being developed. We intend to apply the index to assess the influence of the parameters of the copying process on the quality of the copies.

Document Type: Research Article

Publication date: January 1, 2004

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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