Glossary of video terms

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b) An analog signal that has been converted to a digital form.}}

b) Quantitatively: Any of a number of measures of spatial visual resolution such as the reciprocal of the value of the angular separation in minutes of arc of two neighboring objects (points or lines or other specified stimuli) which the observer can just perceive to be separate.

A generalized use class aspect that specifies what discrimination level you need to recognize a target of interest. See the Discrimination Level topic for video quality requirements considerations.}}

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a) In interlaced scan systems, the information for one picture is divided up into two fields. Each field contains one-half of the lines required to produce the entire picture. Adjacent lines in the picture are in alternate fields. b) Half of the horizontal lines (262.5 in NTSC and 312.5 in PAL) needed to create a complete picture. c) One complete vertical scan of an image. In a progressive scanning system, all of the scanning lines comprising a frame also comprise a field. d) An area in a window in which you can type text. e) A television picture is produced by scanning the TV screen with an electron beam. One complete scan of the screen is called a field. Two fields are required to make a complete picture, which is called a frame. The duration of a field is approximately 1/60 of a second in NTSC and 1/50 or 1/60 of a second in PAL. f) One half of a complete interlaced video picture (frame), containing all the odd or even scanning lines of the picture.}} a) A frame consists of all the information required for a complete picture. For interlaced scan systems, there are two fields in a frame. For progressive video, these lines contain samples starting from one time instant and continuing through successive lines to the bottom of the frame. b) A complete picture composed of two fields. In the NTSC system, 525 interlaced horizontal lines of picture information in 29.97 frames per second. In the PAL system, 625 interlaced horizontal lines of picture information in 25 frames per second.}}

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.}}

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• repeating section of audio or video material, or of cartoon cells.
• a synonym for "post-sync": dialog replacement (i.e. dubbing) during post-processing to improve audio quality.}}

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Notes

References

References

1. Tektronix Guide to Video Terms and Acronyms
2. "High-Tech Productions Glossary of Video Terms".
3. [http://www.safecomprogram.gov/SiteCollectionDocuments/3aVideoUserRequirementGuidedoc.pdf Defining Video Quality Requirements: A Guide for Public Safety]
4. ''Encarta Webster's Dictionary of the English Language Second Edition'' (2004), Anne Soukhanov, editor. Bloomsbury Publishing, PLC, 2208 p., {{ISBN. 978-1-58234-510-9
5. [https://www.swgit.org/pdf/Current%20Joint%20Documents%20Released%20with%20SWGDE/814d89a2-1db9-3782-a64b-cbfb17d26965.pdf SWGDE and SWGIT Digital and Multimedia Evidence Glossary v2.3]
6. McGraw-Hill Encyclopedia of Science and Technology, 9th Edition 4/16/2002 {{ISBN. 9780079136657
7. [http://www.cohu.com/cctv/glossary.htm COHU, Inc. Glossary of Common CCTV Terms]
8. Britannica Concise Encyclopedia, Encyclopædia Britannica, Inc., 28 September 2007 {{ISBN. 978-1593392932