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Precision Tone Reproduction Curve Measurement Technique for High Image Quality and Halftone Design Applications

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We show that an extremely accurate tone reproduction curve (TRC), insensitive to noise in the printer and the media, can be measured using a scanner. In the scannerbased approach, two patterns are written. The first contains as many as 15,000 extremely small patches of the 256 addressable gray levels randomly placed on paper. The random placement averages over the noise and the mean of each patch gives an estimate of the TRC. The second pattern consists of 256 narrow strips with a high spatial frequency modulation between two adjacent gray levels for each strip. The scanner response at the modulation frequency for each strip gives the change in gray level between each halftone. The absolute values of the TRC from the first measurement are adjusted to best agree with the slope measurements, resulting in a highly accurate TRC measurement.
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Document Type: Research Article

Publication date: 2002-01-01

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  • 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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