Steerable-Discrete-Cosine-Transform (SDCT): Hardware Implementation and Performance Analysis †
Department of Electronics and Telecommunication (DET), Politecnico di Torino, C.so Duca degli Abruzzi 24, 10129 Turin, Italy
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Author to whom correspondence should be addressed.
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This paper is an extended version of our paper published in Applications in Electronics Pervading Industry, Environment and Society, APPLEPIES 2019.
Sensors 2020, 20(5), 1405; https://doi.org/10.3390/s20051405
Received: 30 January 2020
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Revised: 24 February 2020
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Accepted: 28 February 2020
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Published: 4 March 2020
(This article belongs to the Special Issue Applications in Electronics Pervading Industry, Environment and Society – Sensing Systems and Pervasive Intelligence)
In the last years, the need for new efficient video compression methods grown rapidly as frame resolution has increased dramatically. The Joint Collaborative Team on Video Coding (JCT-VC) effort produced in 2013 the H.265/High Efficiency Video Coding (HEVC) standard, which represents the state of the art in video coding standards. Nevertheless, in the last years, new algorithms and techniques to improve coding efficiency have been proposed. One promising approach relies on embedding direction capabilities into the transform stage. Recently, the Steerable Discrete Cosine Transform (SDCT) has been proposed to exploit directional DCT using a basis having different orientation angles. The SDCT leads to a sparser representation, which translates to improved coding efficiency. Preliminary results show that the SDCT can be embedded into the HEVC standard, providing better compression ratios. This paper presents a hardware architecture for the SDCT, which is able to work at a frequency of 188 , reaching a throughput of 3.00 GSample/s. In particular, this architecture supports 8k UltraHigh Definition (UHD) (7680 × 4320) with a frame rate of 60 , which is one of the best resolutions supported by HEVC.
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Keywords:
video coding; discrete cosine transform; directional transform; VLSI
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MDPI and ACS Style
Peloso, R.; Capra, M.; Sole, L.; Ruo Roch, M.; Masera, G.; Martina, M. Steerable-Discrete-Cosine-Transform (SDCT): Hardware Implementation and Performance Analysis. Sensors 2020, 20, 1405. https://doi.org/10.3390/s20051405
AMA Style
Peloso R, Capra M, Sole L, Ruo Roch M, Masera G, Martina M. Steerable-Discrete-Cosine-Transform (SDCT): Hardware Implementation and Performance Analysis. Sensors. 2020; 20(5):1405. https://doi.org/10.3390/s20051405
Chicago/Turabian StylePeloso, Riccardo, Maurizio Capra, Luigi Sole, Massimo Ruo Roch, Guido Masera, and Maurizio Martina. 2020. "Steerable-Discrete-Cosine-Transform (SDCT): Hardware Implementation and Performance Analysis" Sensors 20, no. 5: 1405. https://doi.org/10.3390/s20051405
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