doi: 10.4304/jsw.9.2.329-335
A High Efficient Tables Look-up Algorithm for CAVLC Decoding
- Faculty of Automation, Guangdong University of Technology, P. R. China
Abstract
In order to solve the problems of high tablememory access and long table look-up time and big tablestorage space in the process of CAVLC decoding forH.264/AVC, a high efficient table look-up algorithm ispresented in this paper. The contribution of this paper liesthat we uses a program method to realize fully the no-tablelooking-up of codeword. Specifically, after finding therelationships existed in code length and numbers of 0 incode prefix and code suffix and code, we uses a programcode method to realize entirely UVLCTs(UnstructuredVariable Length Coding Tables) in CAVLC decoding, As aresult, all decoded codewords in UVLCTS can be decodedand obtained easily through a program execution wayinstead of TLSS(table look-up by sequential search), whichcould save a lot of table memory access and reduce amountof table look-up time and save a large number of tablestorage spaces for CAVLC decoding. The simulation resultsshow that our proposed scheme can save 100% tablememory access, reduce about 45% table look-up time andsave 2320 byte table storage space of table look-up inCAVLC decoding compared with TLSS method, withoutdegrading video quality.
Keywords
- Memory
- access;
- Table
- look-up;
- Storage
- sp
How to Cite
Jianhua Wang, Lianglun Cheng, Jun Liu, and ShiLiang Luo, "A High Efficient Tables Look-up Algorithm for CAVLC Decoding," Journal of Software, vol. 9, no. 2, pp. 329-335, 2014. https://doi.org/ 10.4304/jsw.9.2.329-335
Copyright & License
Copyright © 2014 by the authors. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).