DocumentCode :
2348146
Title :
A full-mode FME VLSI architecture based on 8×8/4×4 adaptive Hadamard Transform for QFHD H.264/AVC encoder
Author :
Liu, Jialiang ; Chen, Xinhua ; Fan, Yibo ; Zeng, Xiaoyang
Author_Institution :
Coll. of Inf. Sci. & Eng., Shandong Univ. of Sci. & Technol., Qingdao, China
fYear :
2011
fDate :
3-5 Oct. 2011
Firstpage :
434
Lastpage :
439
Abstract :
Adaptive Block-size Transform (ABT) has been added to H.264/AVC standard with the Fidelity Range Extension. In this paper, we apply this ABT concept to our FME design and propose a full-mode FME architecture based on 8×8/4×4 adaptive Hadamard Transform. This technique can avoid unifying all variable block-size blocks into 4×4-size blocks and improve the encoding performance. We also exploit the linearity of Hadamard Transform in quarter-pel refinement and decrease the cycles caused by the second long search process. In architecture level, we employ two interpolating engines that can support 8-pel and 4-pel input to time-share one SATD (Sum of Absolute Hadamard Transform) Generator. These strategies can increase parallelism and reduce the cycles efficiently. Besides, this design can support full modes, which guarantees the encoding performance. Experimental results show that our design can achieve real-time processing for QFHD@30fps at the operation frequency of 320MHz with 444.6K gates hardware.
Keywords :
Hadamard codes; Hadamard transforms; VLSI; adaptive codes; data compression; interpolation; video coding; 4-pel input; 8×8/4×4 adaptive Hadamard transform; 8-pel input; ABT concept; FME design; QFHD H.264-AVC encoder; SATD generator; fidelity range extension; frequency 320 MHz; full-mode FME VLSI architecture; interpolating engines; quarter-pel refinement; second long search process; sum of absolute Hadamard transform generator; variable block-size blocks; Feature extraction; Transforms; H.264/AVC; adaptive block-size hadamard transform; fractional motion estimation; quad full high definition;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
VLSI and System-on-Chip (VLSI-SoC), 2011 IEEE/IFIP 19th International Conference on
Conference_Location :
Hong Kong
Print_ISBN :
978-1-4577-0171-9
Electronic_ISBN :
978-1-4577-0169-6
Type :
conf
DOI :
10.1109/VLSISoC.2011.6081622
Filename :
6081622
Link To Document :
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