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  • Layered Low-Density Generator Matrix Codes for Super High Definition Scalable Video Coding System

    Yoshihide TONOMURA  Daisuke SHIRAI  Takayuki NAKACHI  Tatsuya FUJII  Hitoshi KIYA  

     
    PAPER

      Vol:
    E92-A No:3
      Page(s):
    798-807

    In this paper, we introduce layered low-density generator matrix (Layered-LDGM) codes for super high definition (SHD) scalable video systems. The layered-LDGM codes maintain the correspondence relationship of each layer from the encoder side to the decoder side. This resulting structure supports partial decoding. Furthermore, the proposed layered-LDGM codes create highly efficient forward error correcting (FEC) data by considering the relationship between each scalable component. Therefore, the proposed layered-LDGM codes raise the probability of restoring the important components. Simulations show that the proposed layered-LDGM codes offer better error resiliency than the existing method which creates FEC data for each scalable component independently. The proposed layered-LDGM codes support partial decoding and raise the probability of restoring the base component. These characteristics are very suitable for scalable video coding systems.