Dr. James Tam Profile

Dr. James Tam

Research Scientist at Communications Research Ctr Canada

SPIE Involvement:

Author

Area of Expertise:

visual perception , binocular vision , stereopis , human factors

Websites:

Company Website

Profile Summary

Research on applications of characteristics of human visual perception and cognition to the design and development of visual communication systems.

Publications (35)

Proceedings Article | 24 February 2012 Paper

Visual comfort: stereoscopic objects moving in the horizontal and mid-sagittal planes

Wa James Tam, Filippo Speranza, Carlos Vázquez, Ron Renaud, Namho Hur

Proceedings Volume 8288, 828813 (2012) https://doi.org/10.1117/12.909121

KEYWORDS: Visualization, Video, Cameras, LCDs, Scanning electron microscopy, Stereoscopic displays, Ranging, Statistical analysis, Solids, Telecommunications

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Proceedings Article | 18 February 2012 Paper

Perceived depth of multi parallel-overlapping-transparent-stereoscopic-surfaces

Saori Aida, Koichi Shimono, Wa James Tam

Proceedings Volume 8291, 82910O (2012) https://doi.org/10.1117/12.909788

KEYWORDS: Visualization, Stereo holograms, Visual system, Projection systems, Selenium, Electronic imaging, 3D displays, Oceanography, 3D image processing, Human vision and color perception

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Proceedings Article | 16 February 2011 Paper

Image quality of up-converted 2D video from frame-compatible 3D video

Filippo Speranza, Wa James Tam, Carlos Vázquez, Ronald Renaud, Phil Blanchfield

Proceedings Volume 7863, 78632D (2011) https://doi.org/10.1117/12.877391

KEYWORDS: Video, 3D vision, Glasses, 3D video compression, Molybdenum, 3D displays, Video processing, Video coding, Computer programming, Image quality

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Proceedings Article | 17 February 2010 Paper

Removing the cardboard effect in stereoscopic images using smoothed depth maps

Koichi Shimono, Wa James Tam, Carlos Vázquez, Filippo Speranza, Ron Renaud

Proceedings Volume 7524, 75241C (2010) https://doi.org/10.1117/12.839396

KEYWORDS: Image processing, Visualization, Cameras, Stereoscopic cameras, Video, Image quality, Image filtering, Stereoscopic displays, Liquid crystals, Linear filtering

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Proceedings Article | 19 February 2009 Paper

Temporal sub-sampling of depth maps in depth image-based rendering of stereoscopic image sequences

Wa James Tam, Filippo Speranza, Carlos Vázquez, Liang Zhang

Proceedings Volume 7237, 72371K (2009) https://doi.org/10.1117/12.807168

KEYWORDS: Visualization, Video, Image quality, Cameras, Eye, Image transmission, Stereoscopic displays, Liquid crystals, Stereoscopic cameras, Glasses

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Proceedings Article | 18 February 2009 Paper

Three-dimensional TV: a novel method for generating surrogate depth maps using colour information

Wa James Tam, Carlos Vázquez, Filippo Speranza

Proceedings Volume 7237, 72371A (2009) https://doi.org/10.1117/12.807147

KEYWORDS: Visualization, Video, Cameras, Chromium, 3D image processing, Image quality, Stereoscopic cameras, Eye, Stereoscopic displays, Image segmentation

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Proceedings Article | 5 March 2007 Paper

Surrogate depth maps for stereoscopic imaging: different edge types

Wa James Tam, Carlos Vázquez, Filippo Speranza

Proceedings Volume 6490, 64900C (2007) https://doi.org/10.1117/12.704494

KEYWORDS: Image quality, Visualization, Cameras, Stereoscopic cameras, Image enhancement, Image processing, Stereoscopy, 3D image processing, Stereoscopic displays, Image segmentation

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Proceedings Article | 17 October 2006 Paper

Stereoscopic imaging: filling disoccluded areas in depth image-based rendering

Carlos Vázquez, Wa James Tam, Filippo Speranza

Proceedings Volume 6392, 63920D (2006) https://doi.org/10.1117/12.685047

KEYWORDS: Image quality, Image processing, Cameras, Image compression, Stereoscopy, Video, Digital imaging, Image transmission, Liquid crystals, 3D image processing

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Proceedings Article | 30 January 2006 Paper

Depth maps created from blur information using images with focus at near and at far

Sukhee Cho, Wa Tam, Filippo Speranza, Ron Renaud, Namho Hur, Soo In Lee

Proceedings Volume 6055, 60551D (2006) https://doi.org/10.1117/12.643008

KEYWORDS: Cameras, Edge detection, Tellurium, Image analysis, Image processing, Image quality, Gaussian filters, Data processing, 3D image processing, Telecommunications

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Proceedings Article | 27 January 2006 Paper

Effect of disparity and motion on visual comfort of stereoscopic images

Filippo Speranza, Wa Tam, Ron Renaud, Namho Hur

Proceedings Volume 6055, 60550B (2006) https://doi.org/10.1117/12.640865

KEYWORDS: Visualization, Video, Cameras, Stereoscopic displays, Eye, Liquid crystals, Electronics, Switches, Imaging systems, Crystals

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Proceedings Article | 16 November 2005 Paper

Depth image based rendering for multiview stereoscopic displays: role of information at object boundaries

Wa James Tam, Filippo Speranza, Liang Zhang, Ron Renaud, Jason Chan, Carlos Vazquez

Proceedings Volume 6016, 601609 (2005) https://doi.org/10.1117/12.626174

KEYWORDS: Image quality, Cameras, Eye, Image enhancement, Stereoscopic displays, Visualization, Cones, Image processing, Image transmission, Image quality standards

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Proceedings Article | 22 March 2005 Paper

Stereoscopic image rendering based on depth maps created from blur and edge information

Wa Tam, A. Soung Yee, J. Ferreira, S. Tariq, Filippo Speranza

Proceedings Volume 5664, (2005) https://doi.org/10.1117/12.589733

KEYWORDS: Image quality, Cameras, Image processing, Image enhancement, Visual system, Edge detection, Visualization, Image transmission, Eye, Gaussian filters

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Proceedings Article | 22 March 2005 Paper

Perceived smoothness of viewpoint transition in multi-viewpoint stereoscopic displays

Filippo Speranza, Wa Tam, Taali Martin, Lew Stelmach, Chung-Hyun Ahn

Proceedings Volume 5664, (2005) https://doi.org/10.1117/12.587170

KEYWORDS: Head, Visualization, Cameras, Stereoscopic displays, Glasses, Camera shutters, Telecommunications, Imaging systems, Statistical analysis, Scanning electron microscopy

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Proceedings Article | 25 October 2004 Paper

Smoothing depth maps for improved steroscopic image quality

Wa James Tam, Guillaume Alain, Liang Zhang, Taali Martin, Ronald Renaud

Proceedings Volume 5599, (2004) https://doi.org/10.1117/12.583105

KEYWORDS: Image quality, Eye, Video, Cameras, Image quality standards, Gaussian filters, Visualization, Image transmission, Image processing, Digital video recorders

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Proceedings Article | 25 October 2004 Paper

Nonuniform smoothing of depth maps before image-based rendering

Wa James Tam, Liang Zhang

Proceedings Volume 5599, (2004) https://doi.org/10.1117/12.571947

KEYWORDS: Image quality, Eye, Cameras, Video, Gaussian filters, Image transmission, Digital filtering, Image filtering, Image processing, Visualization

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Proceedings Article | 26 November 2003 Paper

Stereoscopic video telephony: naturalness and sense of presence

Wa James Tam, Ronald Renaud, Andre Vincent, Taali Martin, Phil Blanchfield

Proceedings Volume 5243, (2003) https://doi.org/10.1117/12.510787

KEYWORDS: Video, Cameras, Telecommunications, Nose, Visualization, Imaging systems, Image quality, Video coding, Eye, Analytical research

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Proceedings Article | 23 June 2003 Paper

Investigation on the effect of disparity-based asymmetrical filtering on stereoscopic video

Gi Mun Um, Filippo Speranza, Liang Zhang, Wa Tam, Ron Renaud, Lew Stelmach, Chung-Hyun Ahn

Proceedings Volume 5150, (2003) https://doi.org/10.1117/12.503173

KEYWORDS: Image filtering, Visualization, Video, Eye, Image quality, Gaussian filters, Stereoscopic displays, Image processing, Telecommunications, Visual system

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Proceedings Article | 30 May 2003 Paper

Improving the visual comfort of stereoscopic images

Lew Stelmach, Wa James Tam, Filippo Speranza, Ronald Renaud, Taali Martin

Proceedings Volume 5006, (2003) https://doi.org/10.1117/12.474093

KEYWORDS: Cameras, Visualization, Video, Image fusion, Stereoscopic cameras, Camera shutters, Image processing, Stereoscopy, Image visualization, Information visualization

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Proceedings Article | 30 May 2003 Paper

Comparison of stereoscopic and nonstereoscopic video images for visual telephone systems

Wa James Tam, Andre Vincent, Ronald Renaud, Phil Blanchfield, Taali Martin

Proceedings Volume 5006, (2003) https://doi.org/10.1117/12.474108

KEYWORDS: Image quality, Video, Quantization, Visualization, Cameras, Image quality standards, Video compression, Information visualization, Stereoscopic displays, Imaging systems

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Proceedings Article | 27 November 2002 Paper

Visual comfort and apparent depth in 3D systems: effects of camera convergence distance

Filippo Speranza, Lew Stelmach, Wa James Tam, Ryan Glabb

Proceedings Volume 4864, (2002) https://doi.org/10.1117/12.454900

KEYWORDS: Cameras, Visualization, Video, Image fusion, Stereoscopic cameras, Imaging systems, Image resolution, Liquid crystals, Camera shutters, Telecommunications

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Proceedings Article | 23 May 2002 Paper

Cross-switching in asymmetrical coding for stereoscopic video

Wa James Tam, Lew Stelmach, Filippo Speranza, Ronald Renaud

Proceedings Volume 4660, (2002) https://doi.org/10.1117/12.468022

KEYWORDS: Video, Image quality, Eye, Stereo holograms, Video coding, Visualization, Visibility, Image segmentation, Target detection, Video compression

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Proceedings Article | 22 June 2001 Paper

Stereoscopic video: asymmetrical coding with temporal interleaving

Wa James Tam, Lew Stelmach, Suganthan Subramaniam

Proceedings Volume 4297, (2001) https://doi.org/10.1117/12.430828

KEYWORDS: Image quality, Eye, Video, Video coding, Visibility, Image compression, Visualization, Switches, Stereo holograms, Image filtering

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Proceedings Article | 22 June 2001 Paper

Perceived size of targets displayed stereoscopically

Wa James Tam, K. Shimono, Sumio Yano

Proceedings Volume 4297, (2001) https://doi.org/10.1117/12.430832

KEYWORDS: Cameras, Stereoscopic displays, 3D displays, Photography, Visualization, Projection systems, Rods, Statistical analysis, Vegetation, Video

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Proceedings Article | 22 June 2001 Paper

Performance enhancement of field-sequential stereoscopic video systems

Wa James Tam, Demin Wang, Ronald Renaud, Andre Vincent

Proceedings Volume 4297, (2001) https://doi.org/10.1117/12.430835

KEYWORDS: Video, Image processing, Software development, Eye, Camera shutters, Glasses, Televisions, Visualization, Cameras, Image segmentation

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Proceedings Article | 3 May 2000 Paper

Bandwidth reduction for stereoscopic video signals

Wa James Tam, Lew Stelmach, Daniel Meegan, Andre Vincent

Proceedings Volume 3957, (2000) https://doi.org/10.1117/12.384476

KEYWORDS: Image quality, Video, Spatial filters, Eye, Image processing, Quantization, Image filtering, Image resolution, Linear filtering, Image quality standards

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Proceedings Article | 24 May 1999 Paper

Stereo image quality: effects of spatio-temporal resolution

Lew Stelmach, Wa James Tam, Daniel Meegan

Proceedings Volume 3639, (1999) https://doi.org/10.1117/12.349366

KEYWORDS: Image quality, Image filtering, Spatial filters, Image resolution, Linear filtering, Spatial resolution, Video, Eye, Temporal resolution, Filtering (signal processing)

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Proceedings Article | 24 May 1999 Paper

Perceptual basis of stereoscopic video

Lew Stelmach, Wa James Tam, Daniel Meegan

Proceedings Volume 3639, (1999) https://doi.org/10.1117/12.349387

KEYWORDS: Image quality, Video, Image enhancement, Televisions, 3D image processing, Stereoscopic displays, 3D displays, 3D acquisition, Human vision and color perception, Software development

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Proceedings Article | 24 May 1999 Paper

Is monocular degradation visible in fused stereo images?

Daniel Meegan, Lew Stelmach, Wa James Tam

Proceedings Volume 3639, (1999) https://doi.org/10.1117/12.349377

KEYWORDS: Visibility, Quantization, Eye, Image compression, Image transmission, Video, Error control coding, Video compression, Image processing, Camera shutters

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Proceedings Article | 30 April 1998 Paper

Psychovisual aspects of viewing stereoscopic video sequences

Wa James Tam, Lew Stelmach, Philip Corriveau

Proceedings Volume 3295, (1998) https://doi.org/10.1117/12.307169

KEYWORDS: Video, Image quality, 3D displays, Image processing, Stereoscopic displays, Eye, Video compression, 3D image processing, Televisions, Visibility

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Proceedings Article | 3 June 1997 Paper

Perceived image quality of MPEG-2 stereoscopic sequences

Wa James Tam, Lew Stelmach

Proceedings Volume 3016, (1997) https://doi.org/10.1117/12.274525

KEYWORDS: Image quality, Image compression, Video, Eye, Image quality standards, Liquid crystals, Camera shutters, Digital video recorders, Visual system, Image enhancement

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Proceedings Article | 22 April 1996 Paper

Stereo-anomalous vision in a sample of young adults

Lew Stelmach, Wa James Tam

Proceedings Volume 2657, (1996) https://doi.org/10.1117/12.238726

KEYWORDS: LCDs, Camera shutters, Visualization, Displays, Statistical analysis, Human vision and color perception, Classification systems, Oscilloscopes, Control systems, Liquid crystals

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Proceedings Article | 20 April 1995 Paper

Visual masking at video scene cuts

Wa James Tam, Lew Stelmach, Limin Wang, Daniel Lauzon, Peter Gray

Proceedings Volume 2411, (1995) https://doi.org/10.1117/12.207532

KEYWORDS: Video, Quantization, Visualization, Video coding, Visibility, Video compression, Visual system, Image segmentation, Video processing, Image processing

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Proceedings Article | 1 May 1994 Paper

Processing image sequences based on eye movements

Lew Stelmach, Wa James Tam

Proceedings Volume 2179, (1994) https://doi.org/10.1117/12.172660

KEYWORDS: Image processing, Image quality, Video, Image resolution, Quantization, Eye, Image compression, Video processing, Visualization, Image quality standards

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Proceedings Article | 8 September 1993 Paper

Temporal frequency discrimination of moving stimuli

Wa James Tam, Lew Stelmach, Paul Hearty

Proceedings Volume 1913, (1993) https://doi.org/10.1117/12.152739

KEYWORDS: Displays, Televisions, Visual system, Image compression, Visualization, Display technology, Control systems, Standards development, Video, Statistical analysis

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Proceedings Article | 1 June 1991 Paper

Static and dynamic spatial resolution in image coding: an investigation of eye movements

Lew Stelmach, Wa James Tam, Paul Hearty

Proceedings Volume 1453, (1991) https://doi.org/10.1117/12.44351

KEYWORDS: Video, Image compression, Eye, Spatial resolution, Image resolution, Visualization, Image processing, Human vision and color perception, Image quality, Infrared cameras

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