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VLSI Architectures for the Steerable-Discrete-Cosine-Transform (SDCT)

  • Luigi Sole
  • Riccardo Peloso
  • Maurizio CapraEmail author
  • Massimo Ruo Roch
  • Guido Masera
  • Maurizio Martina
Conference paper
  • 11 Downloads
Part of the Lecture Notes in Electrical Engineering book series (LNEE, volume 627)

Abstract

Since frame resolution of modern video streams is rapidly growing, the need for more complex and efficient video compression methods arises. H.265/HEVC represents the state of the art in video coding standard. Its architecture is however not completely standardized, as many parts are only described at software level to allow the designer to implement new compression techniques. This paper presents an innovative hardware architecture for the Steerable Discrete Cosine Transform (SDCT), which has been recently embedded into the HEVC standard, providing better compression ratios. Such technique exploits directional DCT using basis having different orientation angles, leading to a sparser representation which translates to an improved coding efficiency. The final design is able to work at a frequency of 188  MHZ, reaching a throughput of 3.00 GSample/s. In particular, this architecture supports 8k UltraHigh Definition (UHD) (7680 \(\times \) 4320) with a frame rate of 60  Hz, which is one of the best resolutions supported by HEVC.

Keywords

Video coding Discrete Cosine Transform Directional transform VLSI 

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Copyright information

© Springer Nature Switzerland AG 2020

Authors and Affiliations

  • Luigi Sole
    • 1
  • Riccardo Peloso
    • 1
  • Maurizio Capra
    • 1
    Email author
  • Massimo Ruo Roch
    • 1
  • Guido Masera
    • 1
  • Maurizio Martina
    • 1
  1. 1.Politecnico di TorinoTurinItaly

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