Title:
IMAGE CODING METHOD, APPARATUS, AND ELECTRONIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/127003
Kind Code:
A1
Abstract:
An image coding method, apparatus, and electronic device. The image coding method comprises: dividing a coding block of an image into a plurality of transform units having a uniform transform unit structure; a hidden symbol bit being set for each basic unit of the residual error coefficient of the coding block; using a basic unit as the unit, mapping the residual error coefficient of the plurality of transform units to the residual error coefficient of a plurality of frequency domain blocks; and coding the mapped residual error coefficients into a bit stream. Thus, TB to FB mapping for a UTU structure can be implemented, the energy of the symbols can be concentrated, and the bit cost of encoding can be decreased. Each basic unit is mapped as a whole, and the corresponding SBH continues to be valid without loss of compression efficiency.
Inventors:
ZHU JIANQING (CN)
YAO JIE (CN)
CAI WENTING (CN)
YAO JIE (CN)
CAI WENTING (CN)
Application Number:
PCT/CN2017/118583
Publication Date:
July 04, 2019
Filing Date:
December 26, 2017
Export Citation:
Assignee:
FUJITSU LTD (JP)
ZHU JIANQING (CN)
YAO JIE (CN)
CAI WENTING (CN)
ZHU JIANQING (CN)
YAO JIE (CN)
CAI WENTING (CN)
International Classes:
H04N19/00
Foreign References:
| CN103220515A | 2013-07-24 | |||
| CN102281435A | 2011-12-14 | |||
| CN101267553A | 2008-09-17 | |||
| US20110090955A1 | 2011-04-21 |
Attorney, Agent or Firm:
BEIJING SANYOU INTELLECTUAL PROPERTY AGENCY LTD. (CN)
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