Image analysis – Image compression or coding – Adaptive coding
Reexamination Certificate
2002-06-28
2010-06-29
Bella, Matthew C (Department: 2624)
Image analysis
Image compression or coding
Adaptive coding
C362S236000, C362S261000, C362S262000
Reexamination Certificate
active
07747094
ABSTRACT:
An input image signal101is divided into MC block units and, when coding processing is performed in these divided units, a motion compensation section107generates a motion-compensated prediction image106aby detecting movement amounts in predetermined MC block units, a smoothing filter section124performs, with respect to the prediction image106a, smoothing of pixels located at the boundaries of adjoining MC blocks on the basis of predetermined evaluation criteria, and a prediction residual signal108, which is obtained from the difference between the prediction image106bobtained by the smoothing, and the input image (input image signal101), is encoded. Accordingly, it is possible to use relatively straightforward computation to perform processing, with respect to a prediction frame image generated by block-unit motion-compensated interframe prediction (MC), to adaptively smooth a discontinuous waveform generated between MC blocks of the prediction frame image, whereby the efficiency of low bit rate coding that employs interframe MC is improved.
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Etoh Minoru
Kato Sadaatsu
Kobayashi Mitsuru
Sekiguchi Shun-ichi
Bella Matthew C
Newman Michael A
NTT DoCoMo Inc.
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
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