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US 7,599,561 B2Granted
Compact interactive tabletop with projection-vision
AssigneeMicrosoft Corporation
InventorsAndrew D. Wilson, Steven Bathiche
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Abstract
The subject application relates to a system(s) and/or methodology that facilitate vision-based projection of any image (still or moving) onto any surface. In particular, a front-projected computer vision-based interactive surface system is provided which uses a new commercially available projection technology to obtain a compact, self-contained form factor. The subject configuration addresses installation, calibration, and portability issues that are primary concerns in most vision-based table systems.
Claims20
A projection-vision system that facilitates sensing and projecting objects as images, comprising:
- a projection surface on which at least one visual coded image is presented;
- and
- an object sensing component, executed by a processor and stored in memory, that detects that the visual coded image is present on the projection surface by:
- computing an edge intensity and edge orientation for each pixel in the at least one visual coded image;
- using the edge intensity and edge orientation to determine code values for each pixel;
- and
- obtaining a candidate instance of the code by checking the code values against a table of codes, and if a match exists, the match is the candidate instance of the code.
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Dependencies are inferred from the claim text.