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arXiv · 1402.5979

A Multiplierless Pruned DCT-like Transformation for Image and Video Compression that Requires 10 Additions Only

V. A. Coutinho·R. J. Cintra·F. M. Bayer·S. Kulasekera·A. Madanayake
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Abstract

A multiplierless pruned approximate 8-point discrete cosine transform (DCT) requiring only 10 additions is introduced. The proposed algorithm was assessed in image and video compression, showing competitive performance with state-of-the-art methods. Digital implementation in 45 nm CMOS technology up to place-and-route level indicates clock speed of 288 MHz at a 1.1 V supply. The 8x8 block rate is 36 MHz.The DCT approximation was embedded into HEVC reference software; resulting video frames, at up to 327 Hz for 8-bit RGB HEVC, presented negligible image degradation.

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V. A. Coutinho, R. J. Cintra, F. M. Bayer, S. Kulasekera, A. Madanayake. 2014-02-24. A Multiplierless Pruned DCT-like Transformation for Image and Video Compression that Requires 10 Additions Only. https://doi.org/10.1007/s11554-015-0492-8

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