VIDEO ENCODING METHOD, VIDEO DECODING METHOD, VIDEO ENCODING APPARATUS, VIDEO DECODING APPARATUS, AND PROGRAM THEREOF
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United States of America Patent
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Issued Date -
May 30, 2013
app pub date -
Aug 5, 2011
filing date -
Aug 12, 2010
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Abandoned
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Abstract
A video encoding apparatus reduces residual energy of motion-compensated inter-frame prediction and improves the coding efficiency in encoding of an image in which optimal values of interpolation filter coefficients are changed in time and space. In the video encoding apparatus, a region division unit sequentially selects region division schemes one by one from among a plurality of prepared region division schemes, and divides a region of an image to be encoded. An interpolation filter coefficient switching unit switches interpolation filter coefficients of a decimal precision pixel for each divided region, and a predictive encoding unit performs predictive encoding. A region division mode decoding section selects a region division scheme, in which a cost is minimized among rate distortion costs calculated for each region division scheme. Using the selected region division scheme, the predictive encoding unit and a variable length encoding unit encode the image to be encoded. Information indicating the region division scheme is also subject to variable length encoding and is transmitted to a decoder.
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