Image analysis – Applications – 3-d or stereo imaging analysis
Patent
1997-07-28
2000-05-09
Mehta, Bhavesh
Image analysis
Applications
3-d or stereo imaging analysis
382294, 382296, 348 42, G06K 900
Patent
active
060614684
ABSTRACT:
In a computerized method, the three-dimensional structure of an object is recovered from a closed-loop sequence of two-dimensional images taken by a camera undergoing some arbitrary motion. In one type of motion, the camera is held fixed, while the object completes a full 360.degree. rotation about an arbitrary axis. Alternatively, the camera can make a complete rotation about the object. In the sequence of images, feature tracking points are selected using pair-wise image registration. Ellipses are fitted to the feature tracking points to estimate the tilt of the axis of rotation. A set of variables are set to fixed values while minimizing an image-based objective function to extract a set of first structure and motion parameters. Then the set of variables freed while minimizing of the objective function continues to extract a second set of structure and motion parameters that are substantially the same as the first set of structure and motion parameters.
REFERENCES:
patent: 5155775 (1992-10-01), Brown
patent: 5611000 (1997-03-01), Szeliski et al.
patent: 5724435 (1998-03-01), Malzbender
patent: 5754680 (1998-05-01), Sato et al.
patent: 5963664 (1999-10-01), Kumar et al.
Szeliski, R., "Shape from Rotation," Digital Equipment Corp. Cambridge Research Lab, CRL 90/13, Dec. 21, 1990. pp. 1-38.
Szeliski et al., "Recovering 3D Shape and Motion from Image Streams Using Nonlinear Least Squares," Journal of Visual Communication and Image Representation, vol. 5, No. 1, Mar., pp. 10-28, 1994.
Becker et al., "Semiautomatic 3-D Model Extraction from Unvalibrated 2-D Camera Views," Proceeding SPIE Visual Data Exploration and Analysis II, vol. 2410, pp. 447-461, San Jose, California, Feb. 8-10, 1995.
Matsumoto et al., "A Portable Three-Dimensional Digitizer," Proc. International Conf. On Recent Advances in 3-D Digital Imaging and Modeling, Ottowa, Canada, May 1997, IEEE, 1997, pp. 197-204.
Niem et al., Proc. International Conf. On Recent Advances in 3-D Digital Imaging and Modeling, Ottowa, Canada, May 1997, IEEE, 1997. pp. 173-180.
Compaq Computer Corporation
Mehta Bhavesh
LandOfFree
Method for reconstructing a three-dimensional object from a clos 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 reconstructing a three-dimensional object from a clos, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for reconstructing a three-dimensional object from a clos will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1072901