Optical information processing apparatus and method for using co

Details Optical information processing apparatus and method for using co Optical information processing apparatus and method for using co

1995-05-12

1996-03-05

Mancuso, Joseph

Image analysis

Pattern recognition

Template matching

364822, G06K 976, G06E 300

Patent

active

054974330

ABSTRACT:
An input image of an object is optically Fourier-transformed and after coordinate-transforming the Fourier-transformed input image optically to obtain a rotation-invariant and scale-invariant image, the resultant image is pattern-matched with a computer generated hologram of a reference image. The coordinate-transformation of the Fourier-transformed input image is made using an optical phase filter represented as a computer generated hologram.

REFERENCES:
patent: 4084255 (1978-04-01), Casasent et al.
patent: 4832447 (1989-05-01), Javidi
patent: 4838644 (1989-06-01), Ochoa et al.
patent: 5220622 (1993-06-01), Scarr
patent: 5257322 (1993-10-01), Matsuoka et al.

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