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Applied Optics

Applied Optics


  • Vol. 41, Iss. 29 — Oct. 10, 2002
  • pp: 6075–6079

Extended depth of field with a nonlinear silver-halide emulsion detector

Adam Greengard and W. Thomas Cathey  »View Author Affiliations

Applied Optics, Vol. 41, Issue 29, pp. 6075-6079 (2002)

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Presented here are experimental results of an extended depth-of-field (EDF) system using film to record the image. The EDF system used is an application of wave-front coding. A phase mask is placed in the aperture stop of the lens to code the image data; then digital signal processing is used to decode the image. Wave-front coding is based on linear systems theory, but film is not a linear medium. An extra step of linearization is then needed to apply the technique. Both nonlinear and linearized results are shown, as is a test image that demonstrates the success of the technique for nonlinear media.

© 2002 Optical Society of America

OCIS Codes
(040.5190) Detectors : Photographic film
(070.4560) Fourier optics and signal processing : Data processing by optical means

Original Manuscript: January 10, 2002
Revised Manuscript: June 5, 2002
Published: October 10, 2002

Adam Greengard and W. Thomas Cathey, "Extended depth of field with a nonlinear silver-halide emulsion detector," Appl. Opt. 41, 6075-6079 (2002)

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