Mr. John J. McCann Profile

John J. McCann

Consultant and Retired Senior Manager at McCann Imaging

SPIE Involvement:

Author | Instructor

Area of Expertise:

Color , Spatial imaging , Rod Cone color , HDR , Retinex , Fine art reproduction

Websites:

Personal Website

Publications (43)

SPIE Journal Paper | 17 February 2017 Open Access

Retinex at 50: color theory and spatial algorithms, a review

John McCann

JEI, Vol. 26, Issue 03, 031204, (February 2017) https://doi.org/10.1117/12.10.1117/1.JEI.26.3.031204

KEYWORDS: Visual process modeling, Image processing, Reflectivity, Algorithms, Data modeling, Human vision and color perception, High dynamic range imaging, Visualization, Color vision, Retina

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Proceedings Article | 3 February 2014 Paper

ColorChecker at the beach: dangers of sunburn and glare

John McCann

Proceedings Volume 9015, 90150V (2014) https://doi.org/10.1117/12.2045379

KEYWORDS: Cameras, Digital cameras, Calibration, Reflectivity, Sensors, High dynamic range imaging, Photography, Image processing, Image sensors, RGB color model

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Proceedings Article | 14 March 2013 Paper

Spatial imaging in color and HDR: Prometheus unchained

John McCann

Proceedings Volume 8651, 865107 (2013) https://doi.org/10.1117/12.2008833

KEYWORDS: High dynamic range imaging, Image processing, Digital color imaging, Electronic imaging, Digital imaging, Human vision and color perception, Photography, Printing, Silver, Color imaging

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Proceedings Article | 21 February 2012 Paper

Paintings, photographs, and computer graphics are calculated appearances

John McCann

Proceedings Volume 8291, 829114 (2012) https://doi.org/10.1117/12.914967

KEYWORDS: Photography, Visualization, Cameras, Image segmentation, Computer graphics, High dynamic range imaging, Human vision and color perception, Video, RGB color model, Visual system

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Proceedings Article | 18 February 2012 Open Access

The general solution to HDR rendering

John McCann

Proceedings Volume 8291, 829102 (2012) https://doi.org/10.1117/12.914965

KEYWORDS: High dynamic range imaging, Image processing, Photography, Human vision and color perception, Reflectivity, Cameras, Visual process modeling, 3D modeling, Visualization, Data modeling

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Proceedings Article | 25 January 2012 Paper

Color assimilation and contrast near absolute threshold

John McCann

Proceedings Volume 8292, 829203 (2012) https://doi.org/10.1117/12.912003

KEYWORDS: Rods, Cones, High dynamic range imaging, Visualization, Receptors, Retina, Colorimetry, Color vision, Eye, System on a chip

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Proceedings Article | 25 January 2011 Paper

HDR imaging and color constancy: two sides of the same coin?

John McCann

Proceedings Volume 7866, 78660Q (2011) https://doi.org/10.1117/12.880943

KEYWORDS: High dynamic range imaging, Cameras, Color imaging, Image processing, Inspection, Retina, Image segmentation, Range imaging, 3D image processing, Sensors

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Proceedings Article | 18 February 2010 Paper

The Ansel Adams zone system: HDR capture and range compression by chemical processing

John McCann

Proceedings Volume 7527, 75270S (2010) https://doi.org/10.1117/12.844972

KEYWORDS: Photography, High dynamic range imaging, Cameras, Visualization, Combustion, Image processing, Quantization, Imaging systems, Digital imaging, Image visualization

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Proceedings Article | 19 January 2010 Paper

Pixel and spatial mechanisms of color constancy

John McCann, Carinna Parraman, Alessandro Rizzi

Proceedings Volume 7528, 752803 (2010) https://doi.org/10.1117/12.838736

KEYWORDS: Reflectivity, High dynamic range imaging, Visual process modeling, 3D modeling, Machine vision, Computer vision technology, Image segmentation, Human vision and color perception, Transform theory, Colorimetry

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Proceedings Article | 19 January 2010 Paper

Artist's colour rendering of HDR scenes in 3D Mondrian colour-constancy experiments

Carinna Parraman, John McCann, Alessandro Rizzi

Proceedings Volume 7528, 752802 (2010) https://doi.org/10.1117/12.838740

KEYWORDS: High dynamic range imaging, Reflectivity, Photography, 3D acquisition, Translucency, Cobalt, Light sources and illumination, Human vision and color perception, Colorimetry, Data modeling

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Proceedings Article | 10 February 2009 Paper

Preservation of edges: the mechanism for improvements in HDR imaging

John McCann, Alessandro Rizzi

Proceedings Volume 7240, 72400U (2009) https://doi.org/10.1117/12.810249

KEYWORDS: High dynamic range imaging, Cameras, Photography, Image processing, Associative arrays, Digital imaging, Absorbance, Eye, Range imaging, Lenses

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Proceedings Article | 19 January 2009 Paper

Color appearance and color rendering of HDR scenes: an experiment

Carinna Parraman, Alessandro Rizzi, John McCann

Proceedings Volume 7241, 72410R (2009) https://doi.org/10.1117/12.805703

KEYWORDS: High dynamic range imaging, Cameras, 3D image processing, Reflectivity, Image processing, Photons, Visualization, Photography, Eye, Printing

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Proceedings Article | 14 February 2008 Paper

Peceptual rendering of HDR in painting and photography

John McCann

Proceedings Volume 6806, 68060W (2008) https://doi.org/10.1117/12.767201

KEYWORDS: Photography, High dynamic range imaging, Image processing, Cameras, Silver, Visualization, Printing, Human vision and color perception, Glasses, Image segmentation

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Proceedings Article | 13 February 2008 Paper

Separating the effects of glare from simultaneous contrast

Alessandro Rizzi, Marzia Pezzetti, John McCann

Proceedings Volume 6806, 68060A (2008) https://doi.org/10.1117/12.766743

KEYWORDS: Retina, Calibration, Absorbance, High dynamic range imaging, Light scattering, Visual system, Transparency, Human vision and color perception, Spatial frequencies, Optical testing

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Proceedings Article | 28 January 2008 Paper

Color gamuts in dim illumination

John McCann

Proceedings Volume 6807, 680703 (2008) https://doi.org/10.1117/12.766943

KEYWORDS: LCDs, Rods, Cones, Eye, Digital imaging, RGB color model, Transform theory, Reflectivity, Diamond, Monochromators

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Proceedings Article | 12 February 2007 Paper

Aperture and object mode appearances in images

J. McCann

Proceedings Volume 6492, 64920Q (2007) https://doi.org/10.1117/12.703580

KEYWORDS: 3D acquisition, High dynamic range imaging, Reflectivity, Image segmentation, Neodymium, Data modeling, 3D displays, Receptors, Human vision and color perception, Transparency

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Proceedings Article | 12 February 2007 Paper

Veiling glare: the dynamic range limit of HDR images

J. McCann, A. Rizzi

Proceedings Volume 6492, 649213 (2007) https://doi.org/10.1117/12.703042

KEYWORDS: Cameras, High dynamic range imaging, Digital cameras, Photography, Calibration, Quantization, Sensors, Opacity, Retina, Human vision and color perception

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Proceedings Article | 29 January 2007 Paper

On the behavior of spatial models of color

A. Rizzi, J. McCann

Proceedings Volume 6493, 649302 (2007) https://doi.org/10.1117/12.708905

KEYWORDS: Visualization, Image processing, Digital imaging, Image enhancement, Reflectivity, Visual process modeling, Human vision and color perception, High dynamic range imaging, Image filtering, Calibration

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Proceedings Article | 9 February 2006 Paper

High-dynamic-range scene compression in humans

John McCann

Proceedings Volume 6057, 605707 (2006) https://doi.org/10.1117/12.674143

KEYWORDS: Image processing, Visualization, Spatial filters, High dynamic range imaging, Human vision and color perception, Digital image processing, Visual process modeling, Image filtering, Sun, Digital imaging

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Proceedings Article | 16 January 2006 Paper

Ideal illuminants for rod/L-cone color

John McCann

Proceedings Volume 6058, 605801 (2006) https://doi.org/10.1117/12.656567

KEYWORDS: Rods, Cones, Color vision, Receptors, Monochromators, Black bodies, Transparency, Temperature metrology, Electronic imaging, Astatine

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Proceedings Article | 18 March 2005 Paper

Do humans discount the illuminant?

John McCann

Proceedings Volume 5666, (2005) https://doi.org/10.1117/12.594383

KEYWORDS: Reflectivity, Receptors, Visual process modeling, Radon, Clouds, Light emitting diodes, Human vision and color perception, Photography, Visualization, Cones

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Proceedings Article | 17 January 2005 Paper

The history of spectral sensitivity functions for humans and imagers: 1861 to 2004

John McCann

Proceedings Volume 5667, (2005) https://doi.org/10.1117/12.594390

KEYWORDS: Visualization, Receptors, Cones, Photography, Human vision and color perception, Imaging systems, Absorption, Physiology, Psychophysics, Reflectivity

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SPIE Journal Paper | 1 January 2004

Capturing a black cat in shade: past and present of Retinex color appearance models

John McCann

JEI, Vol. 13, Issue 01, (January 2004) https://doi.org/10.1117/12.10.1117/1.1635831

KEYWORDS: Image processing, Reflectivity, Patents, Visual process modeling, Image segmentation, Cameras, Image compression, Receptors, Digital imaging, Data modeling

SPIE Journal Paper | 1 January 2004

Red/white projections and rod/long-wave cone color: an annotated bibliography

John McCann, Jeanne Benton, Suzanne McKee

JEI, Vol. 13, Issue 01, (January 2004) https://doi.org/10.1117/12.10.1117/1.1635830

KEYWORDS: Cones, Photography, Rods, Eye, Transparency, Projection systems, Optical filters, Color vision, Cameras, Receptors

SPIE Journal Paper | 1 January 2004

Retinex in MATLAB^TM

Brian Funt, Florian Ciurea, John McCann

JEI, Vol. 13, Issue 01, (January 2004) https://doi.org/10.1117/12.10.1117/1.1636761

KEYWORDS: MATLAB, Image processing, Sun, Data modeling, Control systems, Calibration, Visual process modeling, Spatial frequencies, Visualization, Human vision and color perception

SPIE Journal Paper | 1 January 2004 Open Access

Retinex at 40

John McCann

JEI, Vol. 13, Issue 01, (January 2004) https://doi.org/10.1117/12.10.1117/1.1645250

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Proceedings Article | 6 June 2002 Paper

Image processing analysis of traditional Gestalt vision experiments

John McCann

Proceedings Volume 4421, (2002) https://doi.org/10.1117/12.464559

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Proceedings Article | 30 May 2002 Paper

Demonstration of red/white projections and rod-Lcone color

John McCann, Jeanne Benton, Suzanne McKee

Proceedings Volume 4662, (2002) https://doi.org/10.1117/12.469528

KEYWORDS: Rods, Cones, Photography, Transparency, Eye, Projection systems, Receptors, Color vision, Optical filters, Monochromators

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Proceedings Article | 30 May 2002 Paper

Capturing a black cat in shade: the past and present of Retinex color appearance models

John McCann

Proceedings Volume 4662, (2002) https://doi.org/10.1117/12.469530

KEYWORDS: Image processing, Patents, Visual process modeling, Image segmentation, Cameras, Reflectivity, Digital imaging, Image filtering, Systems modeling, Photography

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Proceedings Article | 30 May 2002 Paper

Tuning Retinex parameters

Brian Funt, Florian Ciurea, John McCann

Proceedings Volume 4662, (2002) https://doi.org/10.1117/12.469533

KEYWORDS: Data conversion, MATLAB, Image processing, Human vision and color perception, Visual process modeling, Detection and tracking algorithms, Data modeling, Image resolution, Image compression, Color vision

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Proceedings Article | 8 June 2001 Paper

Benary's Cross: belongingness or coarse sampling

John McCann

Proceedings Volume 4299, (2001) https://doi.org/10.1117/12.429508

KEYWORDS: Image processing, Digital imaging, Image analysis, Reflectivity, Quantitative analysis, Spatial frequencies, Digital image correlation, Image segmentation, Colorimetry, Receptors

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SPIE Journal Paper | 1 January 2001

Calculating lightnesses in a single depth plane

John McCann

JEI, Vol. 10, Issue 01, (January 2001) https://doi.org/10.1117/12.10.1117/1.1333678

KEYWORDS: Diamond, Visual process modeling, Visualization, Image processing, Reflectivity, Sun, Data modeling, Retina, Transparency, Receptors

Proceedings Article | 21 December 2000 Paper

Color gamut mapping using spatial comparisons

John McCann

Proceedings Volume 4300, (2000) https://doi.org/10.1117/12.410782

KEYWORDS: Printing, Graphic arts, Visualization, Photography, Calibration, Image processing, Colorimetry, 3D image processing, Error analysis, Transparency

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Proceedings Article | 2 June 2000 Paper

Calculating the lightness of areas in a single plane

John McCann

Proceedings Volume 3959, (2000) https://doi.org/10.1117/12.387161

KEYWORDS: Diamond, Visual process modeling, Reflectivity, Visualization, Sun, Image processing, Eye models, Transparency, Retina, Photography

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Proceedings Article | 21 December 1999 Paper

Munsell's 100-hue test applied to color films

John McCann

Proceedings Volume 3963, (1999) https://doi.org/10.1117/12.373403

KEYWORDS: Photography, Optical filters, Color blindness, Absorption, Gold, Cameras, Patents, Cones, Human vision and color perception, Image filtering

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SPIE Journal Paper | 1 October 1999

Color spaces for color-gamut mapping

John McCann

JEI, Vol. 8, Issue 04, (October 1999) https://doi.org/10.1117/12.10.1117/1.482716

KEYWORDS: Distortion, Data conversion, Computing systems, 3D image processing, Solids, Calibration, Printing, 3D metrology, Error analysis, Measurement devices

Proceedings Article | 19 May 1999 Paper

Spatial contrast and scatter: opposing partners in sensations

John McCann

Proceedings Volume 3644, (1999) https://doi.org/10.1117/12.348486

KEYWORDS: Image processing, Retina, Visual process modeling, Image resolution, Visualization, Human vision and color perception, Computer simulations, Spatial frequencies, Reflectivity, Light scattering

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Proceedings Article | 22 December 1998 Paper

Color gamut measurements and mapping: the role of color spaces

John McCann

Proceedings Volume 3648, (1998) https://doi.org/10.1117/12.334546

KEYWORDS: Lithium, 3D image processing, Color imaging, Erbium, Calibration, Printing, Colorimetry, Solids, 3D modeling, System on a chip

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Proceedings Article | 17 July 1998 Paper

Color imaging systems and color theory: past, present, and future

John McCann

Proceedings Volume 3299, (1998) https://doi.org/10.1117/12.320136

KEYWORDS: Photography, Cones, Eye, Imaging systems, Solids, Reflectivity, Human vision and color perception, Digital photography, Retina, Digital imaging

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Proceedings Article | 4 April 1997 Paper

High-resolution color photographic reproductions

John McCann

Proceedings Volume 3025, (1997) https://doi.org/10.1117/12.270057

KEYWORDS: Photography, Cameras, Transparency, Transform theory, Calibration, Scanners, Printing, 3D acquisition, Digital electronics, Absorbance

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Proceedings Article | 27 August 1992 Paper

Color constancy: small overall and large local changes

John McCann

Proceedings Volume 1666, (1992) https://doi.org/10.1117/12.135977

KEYWORDS: Reflectivity, Bromine, Human vision and color perception, Visualization, Transparency, Visual process modeling, Projection systems, Colorimetry, Optical filters, Visual system

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Proceedings Article | 1 June 1991 Paper

Measurements of lightness: dependence on the position of a white in the field of view

John McCann, Robert Savoy

Proceedings Volume 1453, (1991) https://doi.org/10.1117/12.44373

KEYWORDS: Human vision and color perception, Light scattering, Visualization, Visual process modeling, Retina, Eye, Opacity, Photography, Charge-coupled devices, Lamps

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Proceedings Article | 1 August 1990 Paper

Psychophysical measurements of Hannah color/distance effects

John McCann

Proceedings Volume 1250, (1990) https://doi.org/10.1117/12.19712

KEYWORDS: Retina, Solids, Visualization, Reflectivity, Human vision and color perception, Mirrors, Cadmium, Spatial resolution, Eye, Spatial frequencies

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Showing 5 of 43 publications

Conference Committee Involvement (14)

Human Vision and Electronic Imaging XX

9 February 2015 | San Francisco, California, United States

Human Vision and Electronic Imaging XIX

3 February 2014 | San Francisco, California, United States

Human Vision and Electronic Imaging XVIII

4 February 2013 | Burlingame, California, United States

Human Vision and Electronic Imaging XVII

23 January 2012 | Burlingame, California, United States

Human Vision and Electronic Imaging XVI

24 January 2011 | San Francisco Airport, California, United States

Showing 5 of 14 Conference Committees

Course Instructor

SC1097: HDR Imaging in Cameras, Displays and Human Vision

High-dynamic range (HDR) imaging is a significant improvement over conventional imaging. After a description of the dynamic range problem in image acquisition, this course focuses on standard methods of creating and manipulating HDR images, replacing myths with measurements of scenes, camera images, and visual appearances. In particular, the course presents measurements about the limits of accurate camera acquisition and the usable range of light for displays of our vision system. Regarding our vision system, the course discusses the role of accurate vs. non-accurate luminance recording for the final appearance of a scene, presenting the quality and the characteristics of visual information actually available on the retina. It ends with a discussion of the principles of tone rendering and the role of spatial comparison.

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