Title:
IMAGE PROCESSING DEVICE AND METHOD
Document Type and Number:
WIPO Patent Application WO/2019/230444
Kind Code:
A1
Abstract:
The present disclosure relates to an image processing device and an image processing method that allow suppression of an increase in cost for adaptive orthogonal transform. A bit stream is decoded, then coefficient data resulting from orthogonal transform of image predictive residues is generated, and inverse orthogonal transform corresponding to a transformation type different from the transformation type of the base transformation matrix is applied to the generated coefficient data using a base transformation matrix and a sparse matrix corresponding to the base transformation matrix. This disclosure can be applied to, for example, an image-processing device, an image-encoding device, or an image-decoding device.
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Inventors:
TSUKUBA TAKESHI (JP)
Application Number:
PCT/JP2019/019643
Publication Date:
December 05, 2019
Filing Date:
May 17, 2019
Export Citation:
Assignee:
SONY CORP (JP)
International Classes:
H04N19/12; H04N19/14; H04N19/176; H04N19/70
Domestic Patent References:
| WO2017195666A1 | 2017-11-16 |
Other References:
SAID, AMIR ET AL.: "Complexity Reduction for Adaptive Multiple Transforms (AMTs) using Adjustment Stages", JOINT VIDEO EXPERTS TEAM (JVET) OF ITU-T SG 16 WP 3 AND ISO/IEC JTC 1/SC 29/WG 11, JVET-J0066-V3 , 10TH MEETING, no. JVET-J0066-v3, 20 April 2018 (2018-04-20), San Diego, US, pages 1 - 15, XP030151257
SUZUKI, TERUHIKO ET AL.: "Description of SDR and HDR video coding technology proposal by Sony", JOINT VIDEO EXPERTS TEAM (JVET) OF ITU-T SG 16 WP 3 AND ISO/IEC JTC 1/SC 29/WG 11, JVET-J0028, 10TH MEETING, no. JVET-J0028, 2 April 2018 (2018-04-02), San Diego, US, pages i - iii, 1-7, XP030151196
TSUKUBA, TAKESHI ET AL.: "CE6-related: AMT with only type2/type4 DCT/DST'', ''CE6-related: AMT with only type2/type4 DCT/DST", 11. JVET MEETING; 20180711 - 20180718; LJUBLJANA; (THE JOINT VIDEO EXPLORATION TEAM OF ISO/IEC JTC1/SC29/WG11 AND ITU-T SG.16 ), no. JVET-K0394-v2, July 2018 (2018-07-01), Ljubljana, SI, pages 1 - 7, XP030199876
SUZUKI, TERUHIKO ET AL.: "Description of SDR and HDR video coding technology proposal by Sony", JOINT VIDEO EXPERTS TEAM (JVET) OF ITU-T SG 16 WP 3 AND ISO/IEC JTC 1/SC 29/WG 11, JVET-J0028, 10TH MEETING, no. JVET-J0028, 2 April 2018 (2018-04-02), San Diego, US, pages i - iii, 1-7, XP030151196
TSUKUBA, TAKESHI ET AL.: "CE6-related: AMT with only type2/type4 DCT/DST'', ''CE6-related: AMT with only type2/type4 DCT/DST", 11. JVET MEETING; 20180711 - 20180718; LJUBLJANA; (THE JOINT VIDEO EXPLORATION TEAM OF ISO/IEC JTC1/SC29/WG11 AND ITU-T SG.16 ), no. JVET-K0394-v2, July 2018 (2018-07-01), Ljubljana, SI, pages 1 - 7, XP030199876
Attorney, Agent or Firm:
NISHIKAWA Takashi et al. (JP)
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