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Motionless camera orientation system distortion correcting sensing element

  • US 6,201,574 B1
  • Filed: 02/05/1997
  • Issued: 03/13/2001
  • Est. Priority Date: 05/13/1991
  • Status: Expired due to Fees
First Claim
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1. An electronic imaging system comprising:

  • a wide-angle lens for producing a wide-angle image, the wide-angle lens producing a perspective distortion in the wide-angle image; and

    an imaging sensor, having a surface in optical communication with the wide-angle lens, for generating an output signal representing at least a portion of a corrected wide-angle image, the imaging sensor comprising a plurality of imaging elements, the plurality of imaging elements having a distribution on the surface representable by a nonlinear function, wherein the plurality of imaging elements are distributed such that the perspective distortion in the wide-angle image is substantially corrected to produce the corrected wide-angle image, at least three of the plurality of imaging elements being distributed to define a first curved row of imaging elements, each of the imaging elements defining the first curved row corresponding to a different point on a first straight line along the corrected wide-angle image, thereby allowing for direct mapping between the at least three sensor elements and the points on the first straight line in the corrected wide-angle image.

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