Dr. Edward M. Granger Profile

Dr. Edward M. Granger

Partner at Ontario Beach Systems LLC

SPIE Involvement:

Author

Proceedings Article | 22 December 1998 Paper

Calibration method for radiometric and wavelength calibration of a spectrometer

Edward Granger

Proceedings Volume 3648, (1998) https://doi.org/10.1117/12.334562

KEYWORDS: Calibration, Spectroscopy, Spectral calibration, Absorption, Reflectivity, Sensors, Printing, Spectral resolution, Optical filters, Densitometry

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Proceedings Article | 29 March 1996 Paper

Press controls for extratrinary printing

Edward Granger

Proceedings Volume 2658, (1996) https://doi.org/10.1117/12.236986

KEYWORDS: Control systems, Printing, Optical filters, Image processing, Spectroscopy, Absorption, Densitometry, Spectral resolution, Light sources, Software development

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The Hexachrome Hi-Fi colorant set has added Orange and Green to the normal Cyan, Magenta and Yellow inks used in the extant printing process. The new inks have been added to expand the gamut of printable colors. This new ink set maximizes the total volume of the printable gamut. Therefore, both lightness and chromaticity bounds were considered in the design of the new Hexachrome ink set. This method of adding extra inks is being explored by others to develop richer reds, greens and blues in other reproduction techniques. These new inking systems require new measurement standards to control ink density, dot gain and ink trap on press. Spectrophotometery is suggested as a new standard to control the complex interaction of these new ink combinations. The use of spectral tags is now possible because of the introduction of low cost spectrophotometers. These new instruments will allow inks to be completely described by their spectral signatures. The establishment of spectral signatures as the new standard instead of density will allow new inks to be used and controls to be specified without having to define yet another set of status filters. Tags are being employed to specify the targeted use of color images in a document. Recently the ability to add a PostScript colorant tag has been made possible with the ColorTron spectrometer and software developed by Light Source Computer Images. These colorant tags can be added to the image files to completely describe the preferred reproduction. These can indude the overprint ink spectra which better specify the interactions of the primary ink sets. The new specification should also include measurement conditions so that the control conditions can be accurately repeated at any location. The world of printing is no longer an isolated community where a single measurement instrument was used to control a press. In this production scenario, the repeatability of the instrument was more important than accuracy. With image files now being distributed widely over electronic networks , the need for accuracy, precision and known measurement method is becoming paramount in the control of printing dependent on the new extra-trinary processes.

Proceedings Article | 27 April 1995 Paper

Constant-bandwidth grating-lens spectrometer

Edward Granger, James Zavislan

Proceedings Volume 2413, (1995) https://doi.org/10.1117/12.207592

KEYWORDS: Spectroscopy, Spectral resolution, Diffraction gratings, Chromatic aberrations, Monochromatic aberrations, Optical design, Reflectivity, Monochromators, Collimation, Glasses

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Proceedings Article | 10 April 1995 Paper

Gamut mapping for hard copy using the ATD color space

Edward Granger

Proceedings Volume 2414, (1995) https://doi.org/10.1117/12.206550

KEYWORDS: RGB color model, Visual process modeling, Visualization, Visual system, Image compression, Transform theory, Colorimetry, Data modeling, Printing

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Proceedings Article | 15 April 1994 Paper

Is CIE L*a*b* good enough for desktop publishing?

Edward Granger

Proceedings Volume 2170, (1994) https://doi.org/10.1117/12.173842

KEYWORDS: Computing systems, Visual process modeling, CMYK color model, Color reproduction, Human vision and color perception, Visualization, Systems modeling, Scanners, Printing, RGB color model

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Proceedings Article | 15 April 1994 Paper

ATD, appearance equivalence, and desktop publishing

Edward Granger

Proceedings Volume 2170, (1994) https://doi.org/10.1117/12.173845

KEYWORDS: RGB color model, CMYK color model, Space operations, Visual process modeling, Systems modeling, Human vision and color perception, Color management, Light sources, Eye, Scanners

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Proceedings Article | 8 September 1993 Paper

Uniform color space as a function of spatial frequency

Edward Granger

Proceedings Volume 1913, (1993) https://doi.org/10.1117/12.152719

KEYWORDS: Visual process modeling, Spatial frequencies, Modulation, Modulation transfer functions, Visualization, Receptors, Colorimetry, Data modeling, Visual system, Color vision

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Proceedings Article | 4 August 1993 Paper

Achieving device independence in color through appearance modeling

Edward Granger

Proceedings Volume 1909, (1993) https://doi.org/10.1117/12.149041

KEYWORDS: CMYK color model, RGB color model, Visual process modeling, Graphic arts, Printing, Image processing, Systems modeling, Instrument modeling, Color vision, Colorimetry

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Proceedings Article | 1 December 1991 Paper

Beryllium scatter analysis program

Jerry Behlau, Edward Granger, John Hannon, Mark Baumler, James Reilly

Proceedings Volume 1530, (1991) https://doi.org/10.1117/12.50511

KEYWORDS: Beryllium, Scattering, Polishing, Bidirectional reflectance transmission function, Aluminum, Coating, Scatter measurement, Surface finishing, Carbon, Light scattering

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Showing 5 of 9 publications

SPIE Conference Volume | 6 November 1987

Metrology of Optoelectronic Systems

SPIE Conference Volume | 2 July 1985

Image Quality: An Overview

Conference Committee Involvement (3)

IS&T/SPIE's Symposium on Electronic Imaging: Science and Technology

31 January 1993 | San Jose, United States

Metrology of Optoelectronic Systems

18 May 1987 | Orlando, FL, United States

Image Quality: An Overview

10 April 1985 | Arlington, United States

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