Television – Stereoscopic – Signal formatting
Reexamination Certificate
1998-04-22
2003-01-07
Diep, Nhon (Department: 2613)
Television
Stereoscopic
Signal formatting
C345S950000
Reexamination Certificate
active
06504569
ABSTRACT:
CROSS-REFERENCE TO RELATED APPLICATIONS
Not applicable
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
Not applicable
BACKGROUND OF THE INVENTION
The present invention relates to the processing of video sequences, and more particularly to 2-D extended image generation from 3-D data extracted from a video sequence of a natural three-dimensional scene as observed through a monocular moving camera.
Presently video sequences provide two-dimensional images of natural three-dimensional scenes as observed through a monocular moving camera. Normally in order to produce three-dimensional objects or images a graphics generator is required for building such objects or images, which objects or images are then projected onto a two-dimensional plane for viewing as part of the video sequence. Three-dimensional manipulation of the three-dimensional objects or images is performed by the graphics generator, but the results are seen as a two-dimensional object or image in the video sequence.
What is desired is a method of generating 2-D extended images from 3-D data extracted from a two-dimensional video sequence.
BRIEF SUMMARY OF THE INVENTION
Accordingly the present invention provides a method of generating 2-D extended images from 3-D data extracted from a video sequence representing a natural scene. In an image pre-processing stage image feature points are determined and subsequently tracked from frame to frame of the video sequence. In a structure-from-motion stage the image feature points are used to estimate three-dimensional object velocity and depth. Following these stages depth and motion information are post-processed to generate a dense three-dimensional depth map. World surfaces, corresponding to extended surfaces, are composed by integrating the three-dimensional depth map information.
The objects, advantages and other novel features of the present invention are apparent from the following detailed description when read in conjunction with the appended claims and attached drawing.
REFERENCES:
patent: 5854856 (1998-12-01), Moura et al.
patent: 5999662 (1999-12-01), Burt et al.
patent: 6018349 (2000-01-01), Szeliski et al.
patent: 6215496 (2001-04-01), Szeliski et al.
“Uniqueness and Estimation of Three-Dimensional Motion Parameters of Rigid Objects with Curved Surfaces”, Roger Y. Tsai, IEEE Transactions on Patern Analysis & Machine Intelligence, vol. PAMI-6, No. 1, Jan. 1984.
“A Computer Algorithm for Reconstructing a Scene from Two Projections” H.C. Longuet-Higgins, University of Sussex, Jul. 13, 1981.
“Panoramic Image Mosaics”, Heung-Yeung Shum and Richard Szeliski, Microsoft Research, Technical Report MSR-TR-97-23.
Babic-Vovk Paul T.
Jasinschi Radu S.
Naveen Thumpudi
Tabatabai Ali
Diep Nhon
Grass Valley (U.S.) Inc.
Smith-Hill and Bedell
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