Image analysis – Image compression or coding – Including details of decompression
Reexamination Certificate
2005-06-21
2005-06-21
Wu, Jingge (Department: 2623)
Image analysis
Image compression or coding
Including details of decompression
C382S236000, C375S240160
Reexamination Certificate
active
06909809
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.
Wu Jingge
LandOfFree
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