Motion picture detecting method

Details Motion picture detecting method Motion picture detecting method

1996-12-30

1999-09-28

Faile, Andrew I.

Television

Format conversion

Line doublers type

348448, 348451, 348458, H04N 701, H04N 1120

Patent

active

059596813

ABSTRACT:
A method of accurately detecting rapid motion as well as slow motion using two field memories in an interlaced-progressive scanning converter for changing an interlaced-scanned signal into a progressive-scanned signal. A threshold coefficient, which is used for comparison to a difference between temporal interpolation and spatial interpolation values to determine whether a picture is in motion, is determined dynamically in the disclosed method, rather than being a fixed, predetermined value. The threshold coefficient is determined based upon a degree of correlation between data of pixels above and below a pixel to be interpolated. Detection of whether the picture is stationary is based upon the difference between the data of pixels above and below the pixel to be interpolated is greater than a stationary coefficient. The threshold coefficient is maintained as being no less than the value of the stationary coefficient.

REFERENCES:
patent: 5025495 (1991-06-01), Avis
patent: 5208667 (1993-05-01), Saunders
patent: 5475438 (1995-12-01), Bretl
patent: 5521644 (1996-05-01), Sezan et al.

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