Television – Format conversion – Line doublers type
Patent
1993-11-16
1996-04-02
Metjahic, Safet
Television
Format conversion
Line doublers type
348448, H04N 701
Patent
active
055045316
ABSTRACT:
For improving motion portrayal and reducing undesirable artifacts, e.g., double images and "mouse teeth" structure, each pixel of intermediate fields in a field rate up-conversion system is determined from nearby pixels in the existing fields using an adaptive linear filtering method (or apparatus) which provides: calculation of sums of differences (one or more for each pixel involved in the adaptive filter); calculation of basic coefficients (one for each pixel involved in the adaptive filter); one-dimensional median filtering of the coefficients; two-dimensional linear filtering of coefficients; normalization of coefficients; calculation of main interpolated pixel values; and correction of interpolation in the case of fast motion.
REFERENCES:
patent: 4740842 (1988-04-01), Annegarn et al.
patent: 4845557 (1989-07-01), Lang
patent: 4868655 (1989-09-01), Choquet et al.
patent: 5012337 (1991-04-01), Gillard
patent: 5111511 (1992-05-01), Ishii et al.
patent: 5138448 (1992-08-01), Gillies et al.
patent: 5177610 (1993-01-01), Wilkinson
Chiariglione, L., "Signal Processing of HDTV", Proceedings of the Second International Workshop on Signal Processing of HDTV, L'Aquida, Italy, 29 Feb.-2 Mar. 1988, pp. 421-430.
IEEE Transaction: Aug. 1989, Fractional Frame Rate Up-Conversion Using Weighted Median Filters.
Knee Michael
Madeleine Dominique
Coalter Richard G.
Emanuel Peter M.
Metjahic Safet
Thomson Consumer Electronics S.A.
Tripoli Joseph S.
LandOfFree
Method and apparatus for field rate up-conversion does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for field rate up-conversion, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for field rate up-conversion will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2019770