Decoding composite images of three-dimensional objects by convol

Details Decoding composite images of three-dimensional objects by convol Decoding composite images of three-dimensional objects by convol

1975-03-13

1977-05-10

Stern, Ronald J.

Radiant energy

With infrared or thermal pattern recording

Thermal copying of documents

250323, 350 35, 350162SF, G03C 900, G03H 100

Patent

active

040230376

ABSTRACT:
A method of decoding composite images of three-dimensional objects which are coded by means of a large number of radiation souces of different perspective and which are decoded by means of a point hologram. The point hologram is produced by means of a flat reference beam and by illuminating a shadow mask in the converging beam. The coordinates of the shadow mask correspond to the point image of the source distribution recorded by a hole camera, while the coordinate differences of the holes of the shadow mask have the same value, or a value increased to scale, with respect to the coordinate differences of the point image function of the object plane of the composite image which was nearest to the source distribution during the recording. The decoding of the composite image is effected by shifting between an illumination lens and the point hologram in an incoherent monochromatic converging beam.

REFERENCES:
groh et al., Optics Communications, vol. 1, No. 7, Feb. 1970, pp. 339-340.
Groh et al., Applied Optics, vol. 11, No. 4, Apr. 1972, pp. 931-933.
Wouters et al., Applied Optics, vol. 12, No. 8, Aug. 1973, pp. 1871-1873.
Klotz et al., Optics Communications, vol. 12, No. 2, Oct. 1974, pp. 183-187.

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