Facsimile and static presentation processing – Facsimile – Auxiliary signal
Patent
1992-12-07
1994-04-19
Coles, Sr., Edward L.
Facsimile and static presentation processing
Facsimile
Auxiliary signal
348409, 348390, H04N 1415
Patent
active
053051157
ABSTRACT:
A picture coding method includes the steps of translating the data of an image into 3-dimensional blocks and detecting their movements, in which the transform coefficients of a high degree in the space associated with the 3-dimensional blocks where more movement is involved are removed for reducing spatial resolution while maintaining time resolution and also, the transform coefficients of a high degree in the time associated with the 3-dimensional blocks where less movement is involved are removed for reducing time resolution while maintaining spatial resolution, so that the effective compression of the data can be implemented without a great visual degradation in the picture quality.
REFERENCES:
patent: 4821119 (1990-04-01), Gharavi
patent: 4982285 (1991-01-01), Sugiyama
patent: 5046071 (1991-03-01), Tanoi
patent: 5117287 (1992-05-01), Koike et al.
"Transform Coding of Images" by R. J. Clarke, Academic Press, 1985, pp. 185-193, 234-239, & 561.
"Adaptive Three-Dimensional Transform Coding for Moving Pictures", Akiyama et al., Image Technology Research Laboratory, Osaka, Japan.
Akiyama Toshihide
Takahashi Toshiya
Coles Sr. Edward L.
Matsushita Electric - Industrial Co., Ltd.
Vu Kim Yen
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