Paper Info
Title
Optimized SAD calculation algorithm for Cell® processor
Abstract
Recent multimedia applications demand very high performance to support real-time video encoding. More specifically the mechanism of image block matching is one of the most critical encoder algorithms in terms of computational costs. It is responsible by searching for similar pixel macroblocks when comparing the current macroblock with others in reference images. The SAD (Sum of Absolute Differences) calculation is largelly used as comparation method in different block matching algorithms. This paper purposes a new strategy of SAD method implementation optimized to modern DSP microprocessor architectures like IBM Cell®. Practical results of our proposed method in a H.264/AVC encoder indicate a gain of more than eigth times for each computing unit when compared with original reference code performance.
Year
DOI
Venue
2008
10.1145/1809980.1809991
Companion Proceedings of the XIV Brazilian Symposium on Multimedia and the Web
Keywords
DocType
Citations 
different block,reference image,critical encoder algorithm,absolute differences,optimized sad calculation algorithm,comparation method,sad method,image block matching,original reference code performance,h.264 encoding,sad method implementation,simd,high performance,real time,comparative method,block matching algorithm
Conference
0
PageRank 
References 
Authors
0.34
6
4
Name
Order
Citations
PageRank
Ronaldo Husemann1195.74
Pablo Vaz231.35
Carlos Hass300.34
Valter Roesler43611.96