Abstract
In this paper, we present an efficient scheme for the computation of 4x4 integer transform using SIMD instructions, which can be applied to discrete cosine transform (DCT) as well as Hadamard transform (HT) in MPEG-4 AVC/H.264, a video compression scheme for DMB. Even though it is designed for 64-bits SIMD operations, our method can easily be extended to 128-bits SIMD operations. On a 2.4G (B) Intel Pentium IV system, the proposed method can obtain 4.34x and 2.6x better performances for DCT and HT, respectively, than a 4x4 integer transform technique in an H.264 reference codec using 64-bits SIMD operations. We can still have 6.77x and 3.98x better performances using 128-bits SIMD operations, respectively.
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Yu, SJ., Sohn, CB., Oh, SJ., Ahn, CB. (2005). Multimedia: An SIMD – Based Efficient 4x4 2 D Transform Method. In: Gervasi, O., et al. Computational Science and Its Applications – ICCSA 2005. ICCSA 2005. Lecture Notes in Computer Science, vol 3480. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11424758_18
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DOI: https://doi.org/10.1007/11424758_18
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-25860-5
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