Method and apparatus for calibrating a camera-based whiteboard scanner
AssigneePalo Alto Research Center Incorporated
InventorsEric Saund, Bryan Pendleton, Kimon Roufas, Hadar Shemtov
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Abstract
In accordance with one aspect of the present exemplary embodiments, a calibration arrangement is configured to assist in calibration of a surface scanning system where the calibration arrangement includes a preconfigured physical object which may embody dimensional information wherein the dimensional information is used to calibrate a surface of the scanning system. In an alternative embodiment, the preconfigured physical object is configured to obtain data for use in calibration of the surface of a pan/tilt surface scanning system.
Claims20
A calibration apparatus configured to assist in calibration of a surface scanning system, the calibration apparatus comprising:
- a preconfigured physical arrangement embodying dimensional information, wherein the dimensional information is useful to calibrate a surface of the scanning system.
A calibration apparatus configured to assist in calibration of a pan/tilt based surface scanning system, the calibration apparatus comprising:
- a preconfigured physical arrangement configured to be used to assist in calibration of the surface of the pan/tilt based surface scanning system.
A method of obtaining calibration data for use in calibrating a surface scanning system including a board on which marks are made, and a camera system for detecting and generating electronic images of the marks, the method of obtaining calibration data comprising:
- positioning an arrangement on a board of the scanning system;
- determining locations of objects of the arrangement, wherein the locations of the objects are identified in an x,y coordinate system of the board;
- and
- using the determined locations in a calibration algorithm, wherein the calibration algorithm calibrates an area of the board viewed by the camera with a physical location of a viewed area.
Dependencies are inferred from the claim text.