Coding efficiency of the context-based arithmetic coding engine of AVS 2.0 in the HEVC encoder

Author

Hyunmin Jung ; Soonwoo Choi ; Soo-Ik Chae

Author_Institution

Seoul Nat. Univ., Seoul, South Korea

fYear

2015

fDate

9-12 Jan. 2015

Firstpage

377

Lastpage

378

Abstract

This paper evaluates the coding efficiency of the HM 13.0 HEVC rate-distortion optimizing (RDO) encoder before and after the context-adaptive binary arithmetic coding (CABAC) engine is replaced with the context-based arithmetic coding (CBAC) engine of AVS 2.0. In addition, the rate errors are controlled by varying the bit length of the fractional part for the estimated bit in the rate estimation table. The experimental result shows that the CBAC engine provides 0.21% BD-rate reduction on average, compared to the CABAC engine in the HEVC Test Model (HM) 13.0 encoder, when the bit length of the fractional part of the estimated rate is 3.

Keywords

adaptive codes; arithmetic codes; binary codes; rate distortion theory; video coding; AVS 2.0; CABAC engine; HEVC encoder; HEVC test model; RDO encoder; bit length; coding efficiency; context-adaptive binary arithmetic coding; fractional part; rate estimation table; rate-distortion optimizing encoder; Context; Context modeling; Encoding; Engines; Estimation; Standards; Video coding;

fLanguage

English

Publisher

ieee

Conference_Titel

Consumer Electronics (ICCE), 2015 IEEE International Conference on

Conference_Location

Las Vegas, NV

Print_ISBN

978-1-4799-7542-6

Type

conf

DOI

10.1109/ICCE.2015.7066452

Filename

7066452