A VLSI architecture for high performance CABAC encoding

Hassan Shojania; Subramania Sudharsanan

doi:10.1117/12.632676

24 June 2005 A VLSI architecture for high performance CABAC encoding

Hassan Shojania, Subramania Sudharsanan

Proceedings Volume 5960, Visual Communications and Image Processing 2005; 596049 (2005) https://doi.org/10.1117/12.632676
Event: Visual Communications and Image Processing 2005, 2005, Beijing, China

Abstract

One key technique for improving the coding efficiency of H.264 video standard is the entropy coder, context-adaptive binary arithmetic coder (CABAC). However the complexity of the encoding process of CABAC is significantly higher than the table driven entropy encoding schemes such as the Huffman coding. CABAC is also bit serial and its multi-bit parallelization is extremely difficult. For a high definition video encoder, multi-gigahertz RISC processors will be needed to implement the CABAC encoder. In this paper, we provide an efficient, pipelined VLSI architecture for CABAC encoding along with an analysis of critical issues. The solution encodes a binary symbol every cycle. An FPGA implementation of the proposed scheme capable of 104 Mbps encoding rate and test results are presented. An ASIC synthesis and simulation for a 0.18 μm process technology indicates that the design is capable of encoding 190 million binary symbols per second using an area of 0.35 mm².

Citation Download Citation

Hassan Shojania and Subramania Sudharsanan "A VLSI architecture for high performance CABAC encoding", Proc. SPIE 5960, Visual Communications and Image Processing 2005, 596049 (24 June 2005); https://doi.org/10.1117/12.632676

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available