DocumentCode
1445364
Title
Study of high-order vertical-aperture correction
Author
Drewery, J.O.
Author_Institution
British Broadcasting Corporation, Research Department, Tadworth, UK
Volume
123
Issue
4
fYear
1976
fDate
4/1/1976 12:00:00 AM
Firstpage
299
Lastpage
308
Abstract
Vertical aperture correction has been treated as a spatial transversal filter problem. A method of deriving filter coefficients for infinite-order correction is described and examples are given in the appendix. Finite-order correction based on a maximally-flat frequency characteristic is then discussed. The effects of interlace and noise are considered and the conclusion is reached that correction beyond lst-order obeys a law of diminishing returns. Subjective tests are described including the measurement of source aperture and these confirm the theoretical findings.
Keywords
filtering and prediction theory; television cameras; video signals; filter coefficients; infinite order correction; measurement of source aperture; spatial transversal filter problem; tests; theoretical findings; vertical aperture correction;
fLanguage
English
Journal_Title
Electrical Engineers, Proceedings of the Institution of
Publisher
iet
ISSN
0020-3270
Type
jour
DOI
10.1049/piee.1976.0070
Filename
5253873
Link To Document