Television – Image signal processing circuitry specific to television – Motion vector generation
Patent
1997-08-25
1999-12-21
Lee, Richard
Television
Image signal processing circuitry specific to television
Motion vector generation
348416, 348420, H04N 732
Patent
active
060056398
ABSTRACT:
The appropriate one of a list of possible motion vectors is applied to each region of a video image. An image value for that region is determined for each of four successive fields, for each of the possible motion vectors. The values for these four fields are compared and when the values are substantially the same for a given vector it is assumed that is the vector appropriate to that region. The vectors appropriate to regions of obscured or revealed background can also be assigned by comparing inter-field differences and determining regions where the inter-field differences are high for the central pair and one outer pair and low for the other outer pair of fields. To generate regions corresponding to obscured background only information from the earlier fields is used and to generate regions corresponding to revealed background only information from the later fields are used.
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patent: 4882613 (1989-11-01), Masumoto
patent: 4937666 (1990-06-01), Yang
patent: 5012337 (1991-04-01), Gillard
patent: 5025495 (1991-06-01), Avis
H.C. Bergmann, "Motion Adaptive Frame Interpolation". Proceedings of the International Zurich Seminar on Digital Communications, Mar. 1984, pp. D2.1-D2.5.
G.A. Thomas, "Television Motion Measurement for DATV and Other Applications" BBC Research Department Report No. 1987/11, pp. 1-19.
"Signal Processing of HDTV, II", Proceedings of the Third International Workshop on HDTV, Turin, Italy, 30.sup.th Aug. to 1.sup.st Sep., 1989, pp. 649-655.
G.A. Thomas et al., Generation of High Quality Slow-Motion Replay Using Motion Compensation, Int'l Broadcasting Convention, Brighton, UK, Sep. 21-25, 1990.
Journal IEEE Transactions on ConsumerElectronics, vol. 36, No. 3, Aug. 1990, pp. 395-402.
Burl Michael
Thomas Graham Alexander
BBC, Broadcasting House
Lee Richard
Neuner George W.
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