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Method and system to calibrate a camera system using phase demodulation sensing

  • US 7,433,029 B1
  • Filed: 09/20/2006
  • Issued: 10/07/2008
  • Est. Priority Date: 09/22/2005
  • Status: Expired due to Fees
First Claim
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1. A calibration target definable in real-world (Xi,Yi) coordinates usable to spatially calibrate a camera system that acquires a camera-captured image definable in pixel (xi,yi) coordinates, the calibration target including:

  • a target pattern including intensity levels that change continuously in any pattern direction such that when captured by said camera system at a known distance Z said target pattern produces an image that enables said camera system to discern real-world coordinates of any point in said target pattern with respect to pixel locations in the camera-captured image of said target pattern.

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