A bit-serial sum of absolute difference accelerator for variable block size motion estimation of H.264

Fatemi, M.R.H. and Ates, H.F. and Salleh, R. (2009) A bit-serial sum of absolute difference accelerator for variable block size motion estimation of H.264. In: Conference on Innovative Technologies in Intelligent Systems and Industrial Applications, JUL 25-26, 2009, Kuala Lumpur.

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Bit-serial architectures offer a number of attractive features over their bit-parallel counterparts such as smaller area cost, lower density interconnection, a reduced number of pins, higher clock frequency, simpler routing and etc. These attractive features make them suitable for using in VLSI design and reduce overall production cost. In this paper, we propose the first least significant bit (LSB) bit-serial sum of absolute difference (SAD) hardware accelerator for integer variable block size motion estimation (VBSME) of H.264. This hardware accelerator is based on a previous state-of-art bit-parallel architecture namely propagate partial SAD. In order to reduce area cost and improve throughput, pixel truncation technique is adopted. Due to the bit-serial pipeline architecture and using small processing elements, our architecture works at much higher clock frequency (at least 4 times) and reduces area cost about 32% compared with its bit-parallel counterpart. The proposed hardware accelerator can be used in different disciplines from low bit rate to high bit rate by making a tradeoff between the degree of parallelism or using fast algorithm or a combination of both.

Item Type: Conference or Workshop Item (Paper)
Additional Information: Univ Malaya, Dept Comp Syst & Technol, Fac Comp Sci & Informat Technol, Kuala Lumpur 50603, Malaysia
Uncontrolled Keywords: Computer Science; Engineering
Subjects: Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Divisions: Faculty of Computer Science & Information Technology
Depositing User: Mr. Faizal Hamzah
Date Deposited: 19 Oct 2011 01:50
Last Modified: 19 Oct 2011 01:50
URI: http://eprints.um.edu.my/id/eprint/2236

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