US 7,001,023 B2 · Method and system for calibrating projectors to arbitrarily shaped surfaces with discrete optical sensors mounted at the surfaces

Abstract

A system determines correspondence between locations on a display surface and pixels in an output image of a projector. The display surface can have an arbitrary shape and pose. Locations of known coordinates are identified on the display surface. Each location is optically coupled to a photo sensor by an optical fiber installed in a throughhole in the surface. Known calibration patterns are projected, while sensing directly an intensity of light at each location for each calibration pattern. The intensities are used to determine correspondences between the locations and pixels in an output image of the projector so that projected images can be warped to conform to the display surface.

Claims24

Dependent claims

A method for determining correspondence between locations on a display surface having an arbitrary shape and pixels in an output image of a projector, comprising:

projecting a set of known calibration patterns onto the display surface;
sensing directly an intensity of light at each of a plurality of locations on the display surface for each calibration pattern, there being one discrete optical sensor associated with each location, and in which the optical sensor is coupled to the corresponding location by an optical fiber;
and
correlating the intensities at the locations to determine correspondences between the plurality of locations and pixels in an output image of the projector.

1 more element

Dependencies are inferred from the claim text.

Method and system for calibrating projectors to arbitrarily shaped surfaces with discrete optical sensors mounted at the surfaces

Life of this patent

Method and system for calibrating projectors to arbitrarily shaped surfaces with discrete optical sensors mounted at the surfaces

Life of this patent

Abstract

Claims24