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Implementation of CAVLC Encoder for the Image Compression in H.264/AVC  

Jung Duck Young (한신대학교 정보통신학과)
Choi Dug Young (한신대학교 정보통신학과)
Jo Chang-Seok (한신대학교 정보통신학과)
Sonh Seung Il (한신대학교 정보통신학과)
Publication Information
Journal of the Korea Institute of Information and Communication Engineering / v.9, no.7, 2005 , pp. 1485-1490 More about this Journal
Abstract
Variable length code is an integral component of many international standards on image and video compression currently. Context-based Adaptive Variable Length Coding(CAVLC) is adopted by the emerging JVT(also called H.264, and AVC in MPEG-4). In this paper, we design an architecture for CAVLC encoder, including a coeff_token encoder, level encoder, total_zeros encoder and run_before encoder. The designed CAVLC encoder can encode one syntax element in one clock cycle. As a result of implementation by Vertex-1000e of Xilinx, its operation frequency is 68MHz. Therefore, it is very suitable for video applications that require high throughput.
Keywords
H.264/AVC; CAVLC; Variable length coding;
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