Title :
Study of high-order vertical-aperture correction
Author_Institution :
British Broadcasting Corporation, Research Department, Tadworth, UK
fDate :
4/1/1976 12:00:00 AM
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;
Journal_Title :
Electrical Engineers, Proceedings of the Institution of
DOI :
10.1049/piee.1976.0070
