Abstract
In this paper we present an implementation of the H.264/AVC Inverse Discrete Cosine Transform (IDCT) optimized for Graphics Processing Units (GPUs) using OpenCL. By exploiting that most of the input data of the IDCT for real videos are zero valued coefficients a new compacted data representation is created that allows for several optimizations. Experimental evaluations conducted on different GPUs show average speedups from 1.7x to 7.4x compared to an optimized single-threaded SIMD CPU version. © 2013 Springer-Verlag.
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CITATION STYLE
Wang, B., Alvarez-Mesa, M., Chi, C. C., & Juurlink, B. (2013). An optimized parallel IDCT on graphics processing units. In Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) (Vol. 7640 LNCS, pp. 155–164). https://doi.org/10.1007/978-3-642-36949-0_18
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