Sampling theory for digital video acquisition: the guide for the perplexed user

Lenny I. RUDIN*, Ping YU, Jean-Michel MOREL

*Corresponding author for this work

Research output: Book Chapters | Papers in Conference ProceedingsConference paper (refereed)Researchpeer-review

Abstract

Recently, the law enforcement community with professional interests in applications of image/video processing technology, has been exposed to scientifically flawed salesmanship assertions regarding the advantages and disadvantages of various hardware image acquisition devices (video digitizing cards). These assertions state a necessity of using SMPTE CCIR-601 standard when digitizing NTSC composite video signals from surveillance videotapes. In particular, it would imply that the pixel-sampling rate of 720*486 is absolutely required to capture all the available video information encoded in the composite video signal. Fortunately, these erroneous statements can be directly analyzed within the strict mathematical context of Shannon's Sampling Theory. Here we apply the classical Shannon-Nyquist results to the process of digitizing composite analog video from videotapes to dispel the theoretically unfounded, wrong assertions.

Original languageEnglish
Title of host publicationInvestigative Image Processing II
EditorsZeno J. GERADTS, Lenny I. RUDIN
PublisherSPIE
Pages4-15
Number of pages12
Volume4709
DOIs
Publication statusPublished - 19 Jul 2002
Externally publishedYes
EventAeroSense 2002 - Orlando, United States
Duration: 1 Apr 20025 Apr 2002

Publication series

NameSPIE Conference Proceedings
PublisherSPIE
ISSN (Print)0277-786X

Conference

ConferenceAeroSense 2002
Country/TerritoryUnited States
CityOrlando
Period1/04/025/04/02

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