Facsimile and static presentation processing – Facsimile – Specific signal processing circuitry
Patent
1988-12-09
1992-11-03
Coles, Sr., Edward L.
Facsimile and static presentation processing
Facsimile
Specific signal processing circuitry
358105, 358133, 358136, H04N 712
Patent
active
051610019
ABSTRACT:
Disclosed is a method to achieve a sub-sampling of pictures, making it possible to optimize the spatial and temporal definition of the compressed signal, so as to enable a most faithful possible reconstruction of the picture received with said compressed picture signal and, if necessary, with complementary assistance data. A field of speed vectors is defined for at least each picture to be sub-sampled, and said pictures to be sub-sampled are sub-sampled by eliminating certain picture points, the preserved picture points being chosen so as to avoid selecting a picture point which corresponds spatially to the approximate projection of a source point preserved during the sub-sampling of the preceding sub-sampling picture, said projection resulting from the application, to said source point, of the associated shift vector.
REFERENCES:
patent: 3715483 (1973-02-01), Limb et al.
patent: 4622578 (1986-11-01), Rzeszewski
Huang et al.;"Image Sequence Analysis"; Springer Series in Information Sciences, vol. 5, (Springer-Verlag Berlin, Heidelberg, New York 1981), pp.1-17.
Choquet Bruno
Pele Daniele
Centre National d'Etudes des Telecommunications
Coles Sr. Edward L.
Lee Thomas D.
Telediffusion de France
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