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Application of a logarithmic analog to digital converter to video processing

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Date Issued:
1991
Summary:
Recent advances in integrated circuit technology have resulted in the manufacture of analog to digital converters with a logarithmic transfer characteristic that can operate at video rates. This thesis shows that applying this sort of non-linearity to video signals during digitizing will result in a system that will more closely match the human visual system. The appropriate background is presented including image reproduction, psychophysical aspects of perception, quantization error, and contrast sensitivity. The background is then related to logarithmic processing with respect to minimizing contouring and improving the fidelity of detail in saturated colors. Finally, logarithmic processing was simulated using an image processor and prototype logarithmic analog to digital converters. The results of this demonstration are presented.
Title: Application of a logarithmic analog to digital converter to video processing.
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Name(s): Glatt, Terry Laurence.
Florida Atlantic University, Degree grantor
Glenn, William E., Thesis advisor
Type of Resource: text
Genre: Electronic Thesis Or Dissertation
Issuance: monographic
Date Issued: 1991
Publisher: Florida Atlantic University
Place of Publication: Boca Raton, Fla.
Physical Form: application/pdf
Extent: 84 p.
Language(s): English
Summary: Recent advances in integrated circuit technology have resulted in the manufacture of analog to digital converters with a logarithmic transfer characteristic that can operate at video rates. This thesis shows that applying this sort of non-linearity to video signals during digitizing will result in a system that will more closely match the human visual system. The appropriate background is presented including image reproduction, psychophysical aspects of perception, quantization error, and contrast sensitivity. The background is then related to logarithmic processing with respect to minimizing contouring and improving the fidelity of detail in saturated colors. Finally, logarithmic processing was simulated using an image processor and prototype logarithmic analog to digital converters. The results of this demonstration are presented.
Identifier: 14691 (digitool), FADT14691 (IID), fau:11482 (fedora)
Collection: FAU Electronic Theses and Dissertations Collection
Note(s): College of Engineering and Computer Science
Thesis (M.S.E.)--Florida Atlantic University, 1991.
Subject(s): Analog-to-digital converters
Image transmission
Held by: Florida Atlantic University Libraries
Persistent Link to This Record: http://purl.flvc.org/fcla/dt/14691
Sublocation: Digital Library
Use and Reproduction: Copyright © is held by the author, with permission granted to Florida Atlantic University to digitize, archive and distribute this item for non-profit research and educational purposes. Any reuse of this item in excess of fair use or other copyright exemptions requires permission of the copyright holder.
Use and Reproduction: http://rightsstatements.org/vocab/InC/1.0/
Host Institution: FAU
Is Part of Series: Florida Atlantic University Digital Library Collections.