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

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

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 dec...

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Veröffentlicht in:Applied Optics 2002-10, Vol.41 (29), p.6075-6079
Hauptverfasser: Greengard, Adam, Cathey, W Thomas
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container_issue 29
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container_title Applied Optics
container_volume 41
creator Greengard, Adam
Cathey, W Thomas
description 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.
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title Extended depth of field with a nonlinear silver-halide emulsion detector
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