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Efficient Grayscale Rendering of Large Images Using a Signal Processing Model and the Arctangent Function

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An accurate printer model that is efficient enough to be used in halftoning applications is proposed. The printer model utilizes a physical model to train Adaptive Linear Combiners (ALCs), after which the average exposure of each pixel for any input pattern can be calculated using the optimized weight vector. The average exposure is then converted to the corresponding potential, which is rendered as an 8-bit grayscale image using the arctangent function. Scanned printouts and model outputs of various test images are presented.

This grayscale rendering method can be used to model pulse width modulation for template-based applications. Grayscale images from the model using laser pulse width modulated input images with different sets of templates are presented with measurements. Grayscale images from the model very closely resemble scanned images.
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Document Type: Research Article

Publication date: January 1, 2003

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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