Imaging system for correction of perceptual distortion in wide a

Details Imaging system for correction of perceptual distortion in wide a Imaging system for correction of perceptual distortion in wide a

1995-07-26

1999-12-07

Couso, Yon J.

Image analysis

Image transformation or preprocessing

382154, G06K 964

Patent

active

059996609

ABSTRACT:
An imaging system which corrects perceptual distortion in wide angle picture balances between direct view distortion and linear perspective distortion. The two kinds of distortion are balanced according to a transformation ratio. The balancing can be expressed as: and .phi.=.o slashed.
where .rho. and .phi. are the transformed polar coordinates corresponding to the original polar coordinates r and .o slashed., .lambda. is the transformation ratio defining the amount of each transform to be used, and R is the size of the new image. This can also be effected by a lens having the transfer characteristic whereby B=tan .beta./K; where K is between 1 and 2.

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