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Systems and methods for determining depth using shuttered light pulses

  • US 7,095,487 B2
  • Filed: 10/12/2004
  • Issued: 08/22/2006
  • Est. Priority Date: 10/09/2003
  • Status: Active Grant
First Claim
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1. A method for determining a distance to an object, the method comprising calculating the distance d in accordance with the equation:

  • d = a 0 + a 1

    I 1
    + a 2

    I 2
    +





    a n

    I n
    b 0 + b 1

    I 1
    + b 2

    I 2
    +





    b n

    I n
    ,
    wherein a0 represents a first calibration bias, b0 represents a second calibration bias, Ii represents a measurement of integrated intensity of light associated with a shutter location i, ai represents a first calibration parameter for the shutter location i, and bi represents a second calibration parameter for the shutter location i and where i=1, 2, . . . , n.

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