Abstract
Context-based adaptive binary arithmetic coding (CABAC) adopted in H.264/AVC main profile is the state-of-the-art in terms of bit-rate efficiency. In comparison with context-based adaptive variable length coding (CAVLC) used in baseline profile, it can save up to 7% of the bit-rate. However, CABAC occupies 9.6% of total encoding time and its throughput is limited by bit-level data dependency. Moreover, for ultra-high resolution, such like QFHD (3,840 ×2,160), its performance is difficult to meet real-time requirement for a pure software CABAC encoder. Therefore, it is necessary to accelerate the CABAC encoder by VLSI implementation. In this chapter, a novel architecture of CABAC encoder will be described. Its performance is capable of real-time encoding QFHD video in the worst case of main profile Level 5.1.
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Lin, YL.S., Kao, CY., Kuo, HC., Chen, JW. (2010). CABAC Encoder. In: VLSI Design for Video Coding. Springer, Boston, MA. https://doi.org/10.1007/978-1-4419-0959-6_8
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DOI: https://doi.org/10.1007/978-1-4419-0959-6_8
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