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US 2004/0165776 A1Published application
Means of matching 2D motion vector fields in a render, match, and refine iterative 3D scene model refinement system so as to attain directed hierarchical convergence and insensitivity to color, lighting, and textures
OwnerAlbert-Jan Brouwerinventor
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Abstract
This application concerns an enhancement of the render, match, and refine (RMR) method [0002] for 3D scene model refinement. A method is provided that allows for the directed refinement of camera and geometry associated parameters of the 3D scene model in a manner that is independent of lighting, color, and texture. The method is based on the matching of a rendered motion vector field to a motion vector field estimated from a recorded video stream.
Claims1
A method of matching for an RMR based 3D scene model refinement system comprising:
- per-frame rendering of a motion vector field given the scene model;
- global and local matching of the rendered motion vector field to the corresponding motion vector field extracted from the video stream via a (standard or customized) motion estimation algorithm, thereby enabling directed adjustment of model parameters;
- a hierarchical sequencing of model parameter class refinement when applying said method;
- and
- the application of reverse mapping to attain approximate values for unrefined model parameter classes.
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Dependencies are inferred from the claim text.