Image analysis – Image compression or coding – Adaptive coding
Reexamination Certificate
2003-12-12
2008-08-05
Hung, Yubin (Department: 2624)
Image analysis
Image compression or coding
Adaptive coding
C382S166000, C382S251000, C348S404100, C358S426040, C375S240030
Reexamination Certificate
active
07409098
ABSTRACT:
An image processing apparatus is provided that can define the change amount of a quantizing parameter by suitably reflecting the complexity of image data in the case, when the quantizing parameter is increased a predetermined unit amount, the coarseness the image data of motion picture is quantized becomes r times. An activity computing circuit generates an activity Nactjserving as a complexity of the image data. A ΔQ computing circuit defines a corresponding relationship between activity Nactjand change amount data ΔQ such that the change amount data ΔQ of quantizing parameter increases 1 as the activity Nactjbecomes 1.12 times, to thereby acquire change amount data ΔQ corresponding to the activity Nactjgenerated by the activity computing circuit.
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Sato Kazushi
Sunohara Osamu
Suzuki Teruhiko
Takahashi Kuniaki
Yagasaki Yoichi
Hung Yubin
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Sony Corporation
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