Image analysis – Image compression or coding – Predictive coding
Reexamination Certificate
2007-07-24
2007-07-24
Sherali, Ishrat (Department: 2624)
Image analysis
Image compression or coding
Predictive coding
C382S233000
Reexamination Certificate
active
10901960
ABSTRACT:
An image decoding method is utilized to obtain high quality images without error accumulation. Such an image decoding method comprises receiving an encoded bitstream including information of P and B frames, and executing motion compensation by synthesizing a predicted image of a current frame using motion vector information included in the encoded bitstream and a reference image which is a previously decoded image. The motion compensation includes calculating intensity values at points where no pixels actually exist in the reference image by interpolation performed according to information specifying a positive rounding method or a negative rounding method when the current frame is a P frame, and using a predetermined rounding method which is a positive rounding method or a negative rounding method when the current frame is a B frame.
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Antonelli, Terry Stout & Kraus, LLP.
Hitachi , Ltd.
Sherali Ishrat
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