Image segmentation apparatus
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United States of America Patent
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Nov 2, 2004
Grant Date -
Apr 11, 2002
app pub date -
Aug 21, 2001
filing date -
Aug 23, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
A shape entropy, a motion vector entropy, and a texture entropy of a certain area i of an input image are derived by a shape entropy calculation section, a motion vector entropy calculation section, and a texture entropy calculation section, respectively. Among them, the texture entropy is derived by taking an allowed value n of encoding degradation given according to a limit (encoding rate) of an entropy which can transmitted into consideration. Therefore, a generated entropy obtained by adding up the shape entropy, the motion vector entropy, and the texture entropy becomes a value according to the encoding rate. In such optimizing segmentation encoding as to minimize the generated entropy, therefore, it becomes possible to conduct segmentation according to the encoding rate. According to the present invention, there is provided an image segmentation apparatus capable of conducting such optimizing segmentation as to minimize the generated entropy while taking the limit (encoding rate) of the entropy which can be transmitted into consideration.
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