View Projection: One-Touch Setup of Light Displays on Arbitrary Surfaces
AssigneeSeiko Epson Corporation
InventorsKar-Han Tan, Jing Xiao
Life of this patent
Estimating the term…
Abstract
Light distortion due to light noise or light scattering object in the path of a light beam from a projector to a camera's image sensor in projector-camera systems are mitigated, or eliminated, by a simple modification to a light transport matrix T. For each row in light transport matrix T, matrix entries along a common row are compared, and all but the highest valued entry in the row are zeroed out, i.e. nullified. It is preferred that an array and record notation be used in order to reduce the size of the light transport matrix T, and its modified version to two arrays.
Claims17
A method for imposing a simulated Display Constraint on a light transport matrix T of a projector-camera system in an arbitrary scene, wherein said Display Constraint specifies that any two distinct light rays emitted from the projector will hit the camera's image sensor at distinct parts, said method comprising:
- for each row in light transport matrix T, comparing matrix entries along a common row of said light transport matrix, and retaining the highest valued matrix entry in the common row;
- populating a light transport array with the highest valued matrix entry from each row of said light transport matrix T;
- maintaining a record indicating from what column in said light transport matrix each entry in said light transport array originated from;
- using said record and said light transport array to extract light footprint information for each projector pixel in said projector, as needed.
A method for imposing a simulated Display Constraint on a light transport matrix T of a projector-camera system in an arbitrary scene, wherein said Display Constraint specifies that any two distinct light rays emitted from the projector will hit the camera's image sensor at distinct parts, said method comprising:
- for each row in light transport matrix T, comparing matrix entries along a common row of said light transport matrix, and nullifying all but the highest valued matrix entry in the common row, the resultant matrix being a modified light transport matrix T*.
Dependencies are inferred from the claim text.