Image analysis – Applications – 3-d or stereo imaging analysis
Reexamination Certificate
2005-07-12
2005-07-12
Bali, Vikkram (Department: 2623)
Image analysis
Applications
3-d or stereo imaging analysis
C345S419000
Reexamination Certificate
active
06917702
ABSTRACT:
In a method and system for calibrating a multiple cameras, a calibration object is placed on a turntable while a set of images is acquired with each camera while rotating the turntable. Vertices of a calibration pattern are located in each set of images, and intrinsic parameters for each camera are determined from the vertices. An orientation of a rotation axis of the turntable relative to a position of each camera is estimated from the intrinsic parameters of each camera. A dependency of each orientation on a global geometry of the calibration pattern is minimized. Then, one camera is selected as a fixed camera, all other cameras are designated as floating cameras. A translation vector between the fixed camera and each floating camera is determined, and the translation vectors are used to place the cameras in a common coordinate frame according to the translating vectors.
REFERENCES:
patent: 6563499 (2003-05-01), Waupotitsch et al.
patent: 2002/0050988 (2002-05-01), Petrov et al.
patent: 2003/0044048 (2003-03-01), Zhang et al.
Szeliski, “Shape from rotation,” Proc. Conf. Computer Vision and Pattern Recognition, 1990.
Bali Vikkram
Brinkman Dirk
Curtin Andrew J.
Mitsubishi Electric Research Labs Inc.
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