DocumentCode :
1987558
Title :
A high throughput H.264/AVC intra-frame encoding loop architecture for HD1080p
Author :
Diniz, Cláudio ; Zatt, Bruno ; Thiele, Cristiano ; Susin, Altamiro ; Bampi, Sergio ; Sampaio, Felipe ; Palomino, Daniel ; Agostini, Luciano
Author_Institution :
GME - PPGC - PGMICRO - Inf. Inst., Fed. Univ. do Rio Grande do Sul (UFRGS), Porto Alegre, Brazil
fYear :
2011
fDate :
15-18 May 2011
Firstpage :
579
Lastpage :
582
Abstract :
In this work we present a high throughput hardware architecture for the H.264/AVC intra-frame encoder exploiting the parallelism of intra prediction, forward and inverse transforms and quantization. Since there is a strong data dependency between the intra prediction and the image reconstruction loop, the latency of this path is a key design issue in order to provide high performance coding. Considering that 77% of the total intra-encoding computation is spent in these modules, our architecture handles a 4-pixel wide intra prediction module and a 16-pixel wide reconstruction loop. Compared to the state-of-the-art our approach reduces by 47% the number of cycles to process a macroblock. Running at 150 MHz our architecture guarantees encoding of 61 HD1080p frames per second. The developed architecture requires 73.4 MHz to real-time encode HD1080p, which is a 46% reduction of the frequency requirement compared to the state-of-the-art.
Keywords :
image reconstruction; inverse transforms; video coding; 16-pixel wide reconstruction loop; 4-pixel wide intra prediction module; H.264/AVC intra-frame encoding loop architecture; HD1080p; forward transforms; frequency 150 MHz; frequency 73.4 MHz; high performance coding; image reconstruction loop; intra-encoding computation; inverse transforms; macroblock; throughput hardware architecture; Computer architecture; Encoding; Field programmable gate arrays; Hardware; Quantization; Throughput; Transforms;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Circuits and Systems (ISCAS), 2011 IEEE International Symposium on
Conference_Location :
Rio de Janeiro
ISSN :
0271-4302
Print_ISBN :
978-1-4244-9473-6
Electronic_ISBN :
0271-4302
Type :
conf
DOI :
10.1109/ISCAS.2011.5937631
Filename :
5937631
Link To Document :
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