Copyright © 2008 The Institute of Electronics, Information and Communication Engineers
Special Section on Selected Papers from the 20th Workshop on Circuits and Systems in Karuizawa -- Papers |
A Performance Optimized Architecture of Deblocking Filter in H.264/AVC
1 The authors are with Hanyang University, Seoul, 144-791 Korea. E-mail: kymin{at}hanyang.ac.kr
In this paper, we propose memory and performance optimized architecture to accelerate the operation speed of adaptive deblocking filter for H.264/JVT/AVC video coding. The proposed deblocking filter executes loading/storing and filtering operations with only 192 cycles for 1 macroblock. Only 2x4x4 internal buffers and 32x16 internal SRAM are adopted for the buffering operation of deblocking filter with I/O bandwidth of 32 bit. The proposed architecture can process the filtering operation for 1 macroblock with less filtering cycles and lower memory sizes than some conventional approaches of realizing deblocking filter. The efficient hardware architecture is implemented with novel data arrangement, hybrid filter scheduling and minimum number of buffer. The proposed architecture is suitable for low cost and real-time applications, and the real-time decoding with 1080HD (1920x1088@30 fps) can be easily achieved when working frequency is 70 MHz.
Key Words: deblocking filter, hardware architecture, H.264
Manuscript received July 2, 2007. Manuscript revised October 8, 2007.
Reference
[1] Final Draft International Standard of Joint Video Specification (ITU-T Rec. H.264/ISO/IEC 14496-10 AVC), March 2003. [2] P. List, A. Joch, J. Lainema, G. Bjøntegaard, and M. Karczewicz, "Adaptive de-blocking filter," IEEE Trans. Circuits Syst. Video Technol., vol.13, pp.614–619, July 2003. [3] Y.-W. Huang, B.-Y. Hsieh, T.-C. Chen, and L.-G. Chen, "Analysis, fast algorithm, and VLSI architecture design H.264/AVC intra frame coder," IEEE Trans. Circuits Syst. Video Technol., vol.15, pp.378–401, March 2005. [4] M. Sima, Y. Zhou, and W. Zhang, "An efficient architecture for adaptive de-blocking filter of H.264/AVC video coding," IEEE Trans. Consum. Electron., vol.50, no.1, pp.292–296, Feb. 2004. [5] Y.-W. Huang, T.-W. Chen, B.-Y. Hsieh, T.-C. Wang, T.-H. Chang, and L.-G. Chen, "Architecture design for de-blocking filter in H.264/JVT/AVC," International Conference on Multimedia and Expo (ICME'03), vol.1, p.I-693-6, July 2003. [6] T.-M. Liu, W.-P. Lee, T.-A. Lin, and C.-Y. Lee, "A memory-efficient de-blocking filter for H.264/AVC video coding," ISCAS 2005, vol.1, p.2140, 2005. [7] S.-Y. Shih, C.-R. Chang, and Y.-L. Lin, "A near optimal deblocking filter for H.264 advanced video coding," ASP-DAC2006, p.170, 2006.
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