Image analysis – Image compression or coding – Quantization
Reexamination Certificate
2007-07-24
2007-07-24
Couso, Yon J. (Department: 2624)
Image analysis
Image compression or coding
Quantization
C382S168000, C382S162000
Reexamination Certificate
active
10641111
ABSTRACT:
An image processing apparatus includes a gradation quantization processing in a case of performing a region dividing processing in the animation of a moving picture and in an object extraction, in which frequency histograms are created for each frame, a judgment is performed whether a quantization reference value is re-calculated by comparing the frequency histograms, in the case of performing the re-calculation, and a quantization reference value is successively obtained in accordance with the product of the frequency histograms and the error coefficient, thereby realizing a high-speed high-quality image process.
REFERENCES:
patent: 6018589 (2000-01-01), Hyodo
patent: 2001/0033260 (2001-10-01), Nishitani et al.
patent: 2004/0095500 (2004-05-01), Sato et al.
patent: 10-164377 (1998-06-01), None
Couso Yon J.
Hitachi , Ltd.
Mattingly ,Stanger ,Malur & Brundidge, P.C.
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