A bit-serial sum of absolute difference accelerator for variable block size motion estimation of H.264
Künye
Fatemi, M. R. H., Ateş, H. F. & Salleh, R. B. (2009). A bit-serial sum of absolute difference accelerator for variable block size motion estimation of H.264. Paper presented at the 2009 Innovative Technologies in Intelligent Systems and Industrial Applications, 1-4. doi:10.1109/CITISIA.2009.5224251Özet
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.
Kaynak
2009 Innovative Technologies in Intelligent Systems and Industrial Applicationsİlgili Öğeler
Başlık, yazar, küratör ve konuya göre gösterilen ilgili öğeler.
-
A cost-efficient bit-serial architecture for sub-pixel motion estimation of H.264/AVC
Fatemi, Mohammad Reza Hosseiny; Ateş, Hasan Fehmi; Salleh, Rosli Bin (IEEE Computer Soc, 2008)This paper presents a new VLSI architecture for sub-pixel motion estimation in H.264/AVC encoder. It is based on an interpolation free algorithm that causes a high level reduction on memory requirement, hardware resources ... -
An algorithm and its architecture for half-pixel variable block size motion estimation
Fatemi, Mohammad Reza Hosseiny; Salleh, Rosli Bin; Ateş, Hasan Fehmi (IEEE, 2007)This paper presents an accurate half-pixel variable block size motion estimation algorithm and its hardware architecture. The proposed algorithm does not require interpolation of the reference frame pixels and has near ... -
Fast algorithm analysis and bit-serial architecture design for sub-pixel motion estimation in H.264
Fatemi, Mohammad Reza Hosseiny; Ateş, Hasan Fehmi; Salleh, Rosli Bin (World Scientific Publishing Company, 2010-12)The sub-pixel motion estimation (SME), together with the interpolation of reference frames, is a computationally extensive part of the H.264 encoder that increases the memory requirement 16-times for each reference frame. ...