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Virtual image registration in augmented display field


Chinthammit, W and Seibel, EJ and Furness, T, Virtual image registration in augmented display field (2005) [Patent]

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A virtual image is registered among a perceived real world background. Tracking light is scanned into the real world environment, which includes at least one detector pair. A first time and a second time at which the tracking light impinges on the first detector is detected, in which the first time and second time occurs within adjacent scan lines. A time at which a horizontal scan line edge (e.g., beginning of scan line or end of scan line) is encountered is derived as occurring one half way between the first time and the second time. The horizontal location of the first detector then is determined within a specific scan line inferring the scan line edge time. The vertical location of the detector is determined within a scan frame by measuring time duration using the beginning of the frame. By determining a location independently from the temporal resolution of the augmented imaging system, the temporal location of the detector is identified to a sub-pixel/sub-line precision. The augmented image is registered either to a 3D real world spatial coordinate system or to a time domain coordinate system based upon tracked position and orientation of the user.

Item Details

Item Type:Patent
Research Division:Engineering
Research Group:Engineering practice and education
Research Field:Engineering practice and education not elsewhere classified
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the information and computing sciences
UTAS Author:Chinthammit, W (Dr Winyu Chinthammit)
ID Code:63840
Year Published:2005
Deposited By:Information and Communication Technology
Deposited On:2010-06-03
Last Modified:2010-08-05

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