Title:
MOVING IMAGE CODING DEVICE, MOVING IMAGE DECODING DEVICE, MOVING IMAGE SYSTEM, MOVING IMAGE CODING METHOD, MOVING IMAGE DECODING METHOD, AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2015/194620
Kind Code:
A1
Abstract:
In order to improve coding efficiency in inter-component prediction, an image coding device (1) for coding a moving image having a plurality of color components is provided with a table selection unit, a prediction coefficient derivation unit, and a linear prediction unit. The table selection unit performs switching between a plurality of tables corresponding to the characteristics of the color components of the moving image. The prediction coefficient derivation unit derives a prediction coefficient on the basis of a table obtained by the switching by the table selection unit and a Bit string. The linear prediction unit predicts a color difference prediction residual signal using the prediction coefficient derived by the prediction coefficient derivation unit and a luminance prediction residual signal.
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Inventors:
KAWAMURA KEI (JP)
NAITO SEI (JP)
NAITO SEI (JP)
Application Number:
PCT/JP2015/067566
Publication Date:
December 23, 2015
Filing Date:
June 18, 2015
Export Citation:
Assignee:
KDDI CORP (JP)
International Classes:
H04N19/50; H04N19/13; H04N19/149; H04N19/176; H04N19/186; H04N19/91
Foreign References:
| JP2012129650A | 2012-07-05 |
Other References:
P.LAI ET AL.: "Description of screen content coding technology proposal by MediaTek", JOINT COLLABORATIVE TEAM ON VIDEO CODING(JCT- VC) OF ITU-T SG 16 WP3 AND ISO/IEC JTC1/SC29/ WG11 17TH MEETING:VALENCIA, 18 March 2014 (2014-03-18), ES, pages 3,4
K.KAWAMURA ET AL.: "AHG5:Objective and subjective evaluations of cross-component decorrelation for range extensions profile", 3 January 2014 (2014-01-03), US, pages 1 - 6
K.KAWAMURA ET AL.: "Non-RCE1:Inter colour- component residual coefficients prediction", JOINT COLLABORATIVE TEAM ON VIDEO CODING(JCT- VC) OF ITU-T SG 16 WP3 AND ISO/IEC JTC1/SC29/ WG11 15TH MEETING, 15 October 2013 (2013-10-15), Geneva, CH, pages 1 - 5
K.KAWAMURA ET AL.: "AHG5:Objective and subjective evaluations of cross-component decorrelation for range extensions profile", 3 January 2014 (2014-01-03), US, pages 1 - 6
K.KAWAMURA ET AL.: "Non-RCE1:Inter colour- component residual coefficients prediction", JOINT COLLABORATIVE TEAM ON VIDEO CODING(JCT- VC) OF ITU-T SG 16 WP3 AND ISO/IEC JTC1/SC29/ WG11 15TH MEETING, 15 October 2013 (2013-10-15), Geneva, CH, pages 1 - 5
Attorney, Agent or Firm:
KATO, SEIJI (JP)
Kiyoshi Kato (JP)
Kiyoshi Kato (JP)
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