×

Calibration for a Large Scale Multi-User, Multi-Touch System

  • US 20110050640A1
  • Filed: 09/03/2009
  • Published: 03/03/2011
  • Est. Priority Date: 09/03/2009
  • Status: Abandoned Application
First Claim
Patent Images

1. A method of calibrating a multi-touch user interface apparatus comprising:

  • provisioning a multi-touch display component for use within the multi-touch user interface apparatus;

    provisioning a plurality of projectors with at least two overlapping fields of projection on the multi-touch display component, and each projector corresponding to a projector frame buffer;

    provisioning a plurality of cameras for use in touch sensing, with at least two overlapping fields of view and each camera corresponding to a camera frame buffer;

    projecting, using at least one projector frame buffer, a first known light pattern;

    sensing, at the multi-touch display component the first known light pattern to compute at least one projector transfer function for combining at least two of the plurality of projector frame buffers into a unified coordinate system; and

    capturing images of a second known light pattern wherein the captured images are used to compute a camera transfer function for combining at least two of the plurality of cameras frame buffers into the unified coordinate system.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×