Title:
映像符号化方法，装置，映像復号方法，装置およびそれらのプログラム
Document Type and Number:
Japanese Patent JP5762243
Kind Code:
B2
Abstract:
A generated bit amount of filter coefficients of an adaptive interpolation filter is reduced. A video encoding apparatus using motion compensation includes: a motion detection unit which performs motion search to acquire a motion vector; an interpolation filter coefficient deriving unit which calculates interpolation filter coefficients used for interpolation of a decimal- precision pixel using the motion vector; an interpolation unit which performs the interpolation of the decimal- precision pixel using the interpolation filter coefficients and the motion vector and performs encoding, a parameter selection unit which selects a parameter with which a generated bit amount of the interpolation filter coefficients is minimized from among a plurality of designated parameters in parameters used for entropy encoding of the interpolation filter coefficients, and an encoding processing unit which encodes the selected parameter and the calculated interpolation filter coefficients and outputs an encoded parameter and encoded interpolation filter coefficients.
Inventors:
Shohei Matsuo
Yukihiro Bando
Ken Ito
Masayuki Takamura
Jun Shimizu
Yasuzawa
Yukihiro Bando
Ken Ito
Masayuki Takamura
Jun Shimizu
Yasuzawa
Application Number:
JP2011228553A
Publication Date:
August 12, 2015
Filing Date:
October 18, 2011
Export Citation:
Assignee:
Nippon Telegraph and Telephone Corporation
International Classes:
H04N19/50; H04N19/70; H04N19/105; H04N19/117; H04N19/13; H04N19/132; H04N19/134; H04N19/136; H04N19/139; H04N19/146; H04N19/149; H04N19/172; H04N19/174; H04N19/176; H04N19/196; H04N19/46; H04N19/463; H04N19/503; H04N19/51; H04N19/523; H04N19/587; H04N19/59; H04N19/593; H04N19/61; H04N19/625; H04N19/80; H04N19/91
Foreign References:
| WO2009126915A1 | ||||
| WO2009047917A1 | ||||
| WO2008069073A1 |
Other References:
Shohei Matsuo et al.,CE3: Modifications of region-based adaptive interpolation filter,Joint Collaborative Team on Video Coding (JCT-VC) of ITU-T SG16 WP3 and ISO/IEC JTC1/SC29/WG11,6th Meeting: Torino, IT,2011年 7月,JCTVC-F048,pp.1-13
Attorney, Agent or Firm:
Yoshiyoshi Ogasawara
Kenichi Hiraoka
Kenichi Hiraoka
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