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Holographic subtraction.

Authors
  • Bromley, K
  • Monahan, M A
  • Bryant, J F
  • Thompson, B J
Type
Published Article
Journal
Applied optics
Publication Date
Jan 01, 1971
Volume
10
Issue
1
Pages
174–181
Identifiers
DOI: 10.1364/AO.10.000174
PMID: 20094413
Source
Medline
License
Unknown

Abstract

A holographic technique by which two dissimilar optical fields can be subtracted to yield only their difference is presented. The principle underlying this technique is that of optical interference between a holographically reconstructed field and a direct real-time one. Experimental verification is presented for the three cases of image-plane, fourier-transform, and Fresnel side-band holograms. Also considered is the application of this concept to change detection between photographic transparencies of some scene taken at different times.

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