Pulse or digital communications – Bandwidth reduction or expansion – Television or motion video signal
Reexamination Certificate
2005-04-26
2005-04-26
An, Shawn S. (Department: 2713)
Pulse or digital communications
Bandwidth reduction or expansion
Television or motion video signal
C375S240180, C375S240200, C375S240280, C375S240240, C382S248000, C382S250000, C382S239000
Reexamination Certificate
active
06885702
ABSTRACT:
The invention concerns a method for synchronising a video image (IM) spatial position to find the position of an initial digital coding grid (GI), by said image (IM) coding blocks, characterised in that it consists in the following steps: a) moving along the direction of the image (IM) lines and/or along the direction perpendicular to the image (IM) lines, an analysis grid (GA) consisting of coding blocks and corresponding to at least part of the image (IM); b) determining for each position of the analysis grid (GA), the transformed coefficients Fu,v of each block of the analysis grid (GA), using a discrete cosine transform (TCD); and computing for each analysis grid (GA) position, an activity parameter (AM, ES) representing the image activity; c) determining the analysis grid (GA) position for which said activity parameter (AM, ES) has a minimal value.
REFERENCES:
patent: 3971888 (1976-07-01), Ching et al.
patent: 5214508 (1993-05-01), Stevens
patent: 5231484 (1993-07-01), Gonzales et al.
patent: 5515105 (1996-05-01), Lim
patent: 5574500 (1996-11-01), Hamada et al.
patent: 5579050 (1996-11-01), Jung
patent: 5650860 (1997-07-01), Uz
patent: 6141448 (2000-10-01), Khansari et al.
patent: 6256413 (2001-07-01), Hirabayashi
patent: 0 620 685 (1994-10-01), None
patent: 94302669.0 (1994-10-01), None
patent: WO 9319434 (1993-09-01), None
patent: WO 9503674 (1995-02-01), None
patent: PCTGB95/01507 (1995-06-01), None
Mester et al., Spectral Entropy-Activity Classification in Adaptive Transform Coding, 1992, IEEE, vol. 10, 913-917.*
G. Beakley, C. Cressy, J. Van Pelt, Video Compression: The Need for Testing, 8012 SMPTE Journal, 104 (1995) Nov., No. 11, White Plains, NY, US.
Ricardo De Queiroz, C.K. Choi, Young Huh, and K.R. Rao, Wavelet Transforms in a JPEG-Like Image Coder, IEEE Transactions on Circuites and Systems for Video Technology, vol. 7, No. 2, Apr. 1997.
Baina Jamal
Bretillon Pierre
Goudezeune Gabriel
An Shawn S.
Michael & Best & Friedrich LLP
Telediffusion de France
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