Image analysis – Image transformation or preprocessing – Measuring image properties
Reexamination Certificate
2011-02-01
2011-02-01
Tucker, Wesley (Department: 2624)
Image analysis
Image transformation or preprocessing
Measuring image properties
C345S633000
Reexamination Certificate
active
07881560
ABSTRACT:
The invention relates to a method for determining a position of a marker in an Augmented Reality System. After detection of the marking points of a marker in a captured image, marker vectors are determined using the marking points of the marker, and the distance of the marker from a capturing unit is calculated using the determined marker vectors. The determined distance and marker vectors are used in order to establish a rotation matrix reproducing an orientation of the marker in relation to the capturing unit, wherein the simplification that all marking points of the marker are located at the same distance from the capturing unit is valid and the signs of the rotation matrix are derived from substantially parallel marker vectors.
REFERENCES:
patent: 4875165 (1989-10-01), Fencil et al.
patent: 2002/0094189 (2002-07-01), Navab et al.
patent: 2003/0107647 (2003-06-01), James
Takashi Okuma et al, An Augmented Reality System Usng a Real-time Vision Based Registration, IEEE 1998.
Mathias Mohring et al, Video See-Through AR on Consumer Cell-Phones, IEEE 2004.
Shahzad Malik, Gerhard Roth and Chris McDonald, “Robust 2D Tracking for Real Time Augmented Reality”, Procedures of Vision Interface, 2002, Calgary, Alberta, Canada, pp. 399-406.
A. Ansar and K. Daniilidis, “Linear Solutions for Visual Augmented Reality Registration”, IEEE Symposium for Augmented Reality 2001, pp. 183-184, Abstract.
Hirokazu Kato and Mark Billinghurst, “Marker Tracking and HMD Calibration for a Video-Based Augmented Reality Conferencing System”, 2ndIEEE and ACM International Workshop on Augmented Realitly, 1999, p. 85.
J. Rekimoto, “Matrix: A Realtime Object Identification and Registration Method for Augmented Reality”, Third Asian Pacific Computer and Human Interaction, Japan, Jul. 15-17, 1998, Los Alamitos, CA, USA, IEEE Comput. Soc., Jul. 15, 1998, pp. 63-68, XP010295091, Abstract.
Roz Mark
Siemens Aktiengesellschaft
Tucker Wesley
LandOfFree
Method for determining the position of a marker in an... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for determining the position of a marker in an..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for determining the position of a marker in an... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2646624