Dr. Gregory L. Craig Profile

Dr. Gregory L. Craig

at National Research Council Canada

SPIE Involvement:

Author

Publications (20)

Proceedings Article | 2 May 2009 Paper

Flight performance using a hyperstereo helmet-mounted display: post-flight debriefing questionnaire

Melvyn Kalich, Clarence Rash, Thomas Harding, Sion Jennings, Gregory Craig, Geoffrey Stuart

Proceedings Volume 7326, 732605 (2009) https://doi.org/10.1117/12.819500

KEYWORDS: Head-mounted displays, Distortion, Curium, Sensors, Visualization, Image sensors, Head, Control systems, Safety, Aircraft structures

Read Abstract +

Proceedings Article | 2 May 2009 Paper

Flight performance using a hyperstereo helmet-mounted display: aircraft handling

Sion Jennings, Gregory Craig, Geoffrey Stuart, Melvyn Kalich, Clarence Rash, Thomas Harding

Proceedings Volume 7326, 732604 (2009) https://doi.org/10.1117/12.819496

KEYWORDS: Head-mounted displays, Night vision systems, Fourier transforms, Analytical research, Night vision goggles, Global Positioning System, Control systems, Error analysis, Head, Safety

Read Abstract +

Proceedings Article | 2 May 2009 Paper

Flight performance using a hyperstereo helmet-mounted display: adaptation to hyperstereopsis

Geoffrey Stuart, Sion Jennings, Melvyn Kalich, Clarence Rash, Thomas Harding, Gregory Craig

Proceedings Volume 7326, 732606 (2009) https://doi.org/10.1117/12.820500

KEYWORDS: Visualization, Sensors, Night vision, Head-mounted displays, Eye, Visual system, Night vision systems, Night vision goggles, 3D modeling, Defense and security

Read Abstract +

Proceedings Article | 30 April 2008 Paper

Development of NVG test maneuvers for civilian aircraft

Sion Jennings, Greg Craig, Stephan Carignan, Heiko Fischer, Michel Brulotte

Proceedings Volume 6955, 69550N (2008) https://doi.org/10.1117/12.780333

KEYWORDS: Fourier transforms, Visualization, Driver's vision enhancers, Goggles, Head, Light sources and illumination, Head-mounted displays, Displays, Mirrors, Control systems

Read Abstract +

Proceedings Article | 14 April 2008 Paper

Low light comparison of target visibility with night vision goggles

Gregory Craig, Michel Brulotte, Stephan Carignan, Todd Macuda, Sion Jennings

Proceedings Volume 6955, 69550M (2008) https://doi.org/10.1117/12.780326

KEYWORDS: Goggles, Night vision goggles, Visualization, Light sources and illumination, Visibility, Standards development, Contrast sensitivity, Environmental sensing, Light sources, Computer simulations

Read Abstract +

Proceedings Article | 1 May 2007 Paper

Preliminary assessment of night vision goggles in airborne forest fire suppression

Sion Jennings, Greg Craig, Rob Erdos, Don Filiter, Bob Crowell, Todd Macuda

Proceedings Volume 6557, 65570Z (2007) https://doi.org/10.1117/12.718710

KEYWORDS: Light sources and illumination, Visualization, Goggles, Surgery, Combustion, Visibility, Night vision goggles, Reconnaissance, Safety, Opacity

Read Abstract +

Proceedings Article | 1 May 2007 Paper

Effects of image intensifier halo on perceived layout

James Zacher, Tracey Brandwood, Paul Thomas, Margarita Vinnikov, Gancun Xu, Sion Jennings, Todd Macuda, Stephan Palmisano, Greg Craig, Laurie Wilcox, Robert Allison

Proceedings Volume 6557, 65570U (2007) https://doi.org/10.1117/12.719892

KEYWORDS: Light sources, Cameras, Visualization, Photomasks, Image intensifiers, Eye, Light emitting diodes, Visibility, Digital imaging, Night vision

Read Abstract +

Proceedings Article | 18 May 2006 Paper

Spatial navigation using night vision goggles

Michelle Gauthier, Avi Parush, Todd Macuda, Denis Tang, Greg Craig, Sion Jennings

Proceedings Volume 6224, 62240G (2006) https://doi.org/10.1117/12.663454

KEYWORDS: Visualization, Cognition, Information visualization, Night vision goggles, Navigation systems, Electro optics, Night vision, Visual optics, Head-mounted displays, Goggles

Read Abstract +

Proceedings Article | 19 May 2005 Paper

Detection of motion-defined form using night vision goggles

Todd Macuda, Greg Craig, Robert Allison, Pearl Guterman, Paul Thomas, Sion Jennings

Proceedings Volume 5800, (2005) https://doi.org/10.1117/12.602590

KEYWORDS: Visualization, Night vision goggles, Target detection, Neodymium, Image processing, Photons, Night vision, Image filtering, Image visualization, Image quality

Read Abstract +

Proceedings Article | 19 May 2005 Paper

Light source halos in night vision goggles: psychophysical assessments

Greg Craig, Todd Macuda, Paul Thomas, Rob Allison, Sion Jennings

Proceedings Volume 5800, (2005) https://doi.org/10.1117/12.602543

KEYWORDS: Visualization, Light sources, Night vision goggles, Photography, Light emitting diodes, Light sources and illumination, Image processing, Distance measurement, Goggles, Target recognition

Read Abstract +

Proceedings Article | 19 May 2005 Paper

Comparison of three night vision intensification tube technologies on resolution acuity: results from grating and Hoffman ANV-126 tasks

Todd Macuda, Robert Allison, Paul Thomas, Long Truong, Denis Tang, Greg Craig, Sion Jennings

Proceedings Volume 5800, (2005) https://doi.org/10.1117/12.602598

KEYWORDS: Goggles, Visualization, Night vision, Night vision goggles, Light sources and illumination, Light sources, Modulation transfer functions, Defense and security, Standards development, Psychophysics

Read Abstract +

Proceedings Article | 19 May 2005 Paper

Physical modeling and characterization of the halo phenomenon in night vision goggles

Paul Thomas, Robert Allison, Peter Carr, Edward Shen, Sion Jennings, Todd Macuda, Greg Craig, Richard Hornsey

Proceedings Volume 5800, (2005) https://doi.org/10.1117/12.602736

KEYWORDS: Reflection, Imaging systems, Cameras, Light emitting diodes, Visual process modeling, Night vision goggles, Light sources, Point spread functions, Scattering, Data modeling

Read Abstract +

Proceedings Article | 8 September 2004 Paper

Detection of motion-defined form under simulated night vision conditions

Todd Macuda, Robert Allison, Paul Thomas, Gregory Craig, Sion Jennings

Proceedings Volume 5442, (2004) https://doi.org/10.1117/12.542633

KEYWORDS: Visualization, Night vision, Target detection, Photons, Motion models, Visual process modeling, Signal to noise ratio, Software development, Night vision goggles, Image visualization

Read Abstract +

Proceedings Article | 8 September 2003 Paper

Handling qualities comparison of panoramic night vision goggles and 46-deg. night vision goggles

Gregory Craig, Sion Jennings, David Thorndycraft

Proceedings Volume 5079, (2003) https://doi.org/10.1117/12.487028

KEYWORDS: Night vision goggles, Visualization, Panoramic photography, Head, Goggles, Safety, Visual process modeling, Image intensifiers, Objectives, Fourier transforms

Read Abstract +

Proceedings Article | 5 August 2002 Paper

Sources of error in a helmet-mounted enhanced and synthetic vision system

Sion Jennings, Greg Craig, Norah Link

Proceedings Volume 4711, (2002) https://doi.org/10.1117/12.478882

KEYWORDS: Head-mounted displays, Sensors, Navigation systems, Head, Databases, Heads up displays, Image sensors, Visualization, Synthetic vision, Image fusion

Read Abstract +

Head-up displays (HUDs) or helmet-mounted displays (HMDs) that provide pilots with world-referenced symbology or imagery require critical alignment and minimal time delays. In this paper, some aspects of system accuracy and latency will be discussed in the context of the Enhanced and Synthetic Vision System (ESVS), which is displayed on an HMD. In a joint program, the Canadian Department of National Defence (DND), CAE Inc., CMC Electronics, and the Flight Research Laboratory of the National Research Council of Canada integrated and flight-tested an enhanced and synthetic vision system. The goal of the program was to examine the potential of the ESVS concept for search and rescue operations. Despite obvious misalignments between the enhanced and synthetic images, the current system demonstrated the potential of ESVS systems with most of the test pilots able to navigate at low altitude in low visibility in an area without prepared navigation aids. The flight tests highlighted the system potential- the synthetic imagery provided continuous virtual VFR conditions, while the enhanced sensor generally provided more accurate spatial data and obstacle avoidance information. The ESVS program finished with the first helicopter flight test of both enhanced and synthetic visual displays presented on an HMD. While this milestone was successfully achieved, there is clearly a need for improved technology and further research to implement safe and effective ESVS systems. The system alignment was found to be a complex and perplexing issue. It was not possible to align the system within the precise tolerances generally accepted for HUD-equipped aircraft and, in fact, errors that were an order of magnitude greater than the recommendations were common. Errors built up in such a way that the system developers needed to develop an interim alignment solution and pilots were forced to deal with relatively large angular offsets. This was less than optimal, but proved to be sufficient for the tasks in the trials. However, it is clear that a rigorous alignment procedure is required to satisfy the strict requirements of an all-weather system that would support aggressive maneuvering and navigation in unknown terrain.

Proceedings Article | 16 July 2002 Paper

Hybrid enhanced and synthetic vision system architecture for rotorcraft operations

Norah Link, Ronald Kruk, David McKay, Sion Jennings, Greg Craig

Proceedings Volume 4713, (2002) https://doi.org/10.1117/12.474424

KEYWORDS: Image sensors, Image fusion, Sensors, Cameras, Databases, Head-mounted displays, Image enhancement, Navigation systems, Head, Imaging systems

Read Abstract +

Proceedings Article | 23 June 2000 Paper

Theoretical issues relevant to helmet-mounted display attitude symbology

Joseph Armstrong, Sion Jennings, Greg Craig

Proceedings Volume 4021, (2000) https://doi.org/10.1117/12.389160

KEYWORDS: Head-mounted displays, Head, Visualization, Information visualization, Heads up displays, Nose, Analog electronics, Vestibular system, Analytical research, Visual process modeling

Read Abstract +

Proceedings Article | 23 June 2000 Paper

Effects of field-of-view on pilot performance in night vision goggles flight trials: preliminary findings

Sion Jennings, Greg Craig

Proceedings Volume 4021, (2000) https://doi.org/10.1117/12.389163

KEYWORDS: Visualization, Night vision goggles, Global Positioning System, Goggles, Eye, Head, Lenses, Information visualization, Visual process modeling, Analytical research

Read Abstract +