The search functionality is under construction.
The search functionality is under construction.

Keyword Search Result

[Keyword] texture coding(2hit)

1-2hit
  • Hardware-Efficient Architecture Design for Zerotree Coding in MPEG-4 Still Texture Coder

    Chung-Jr LIAN  Zhong-Lan YANG  Hao-Chieh CHANG  Liang-Gee CHEN  

     
    PAPER-VLSI Design Technology and CAD

      Vol:
    E86-A No:2
      Page(s):
    472-479

    This paper presents a hardware-efficient architecture of tree-depth scan (TDS) and multiple quantization (MQ) scheme for zerotree coding in MPEG-4 still texture coder. The proposed TDS architecture can achieve its maximal throughput to area ratio and minimize the external memory access with only one wavelet-tree size on-chip buffer. The MQ scheme adopts the power-of-two (POT) quantization to realize a cost-effective hardware implementation. The prototyping chip has been implemented in TSMC 0.35 µm CMOS 1P4M technology. This architecture can handle 30 4-CIF (704576) frames per second with five spatial scalability and five SNR scalability layers at 100 MHz working frequency.

  • Multimedia Technology Trend in MPEG4

    Takanori SENOH  Takuyo KOGURE  

     
    INVITED PAPER-Multimedia

      Vol:
    E81-C No:5
      Page(s):
    642-650

    A multimedia coding standard, MPEG4 has frozen its Committee Draft (CD) as the MPEG4 version 1 CD, last October. It defines Audio-Visual (AV) coding Algorithms and their System Multiplex/Composition formats. Founding on Object-base concept, Video part adopts Shape Coding technology in addition to conventional Texture Coding skills. Audio part consists of voice coding tools (HVXC and CELP core) and audio coding tools (HILN and MPEG2 AAC or Twin VQ). Error resilience technologies and Synthetic and Natural Hybrid Coding (SNHC) technologies are the MPEG4 specific features. System part defines flexible Multiplexing of audio-visual bitstreams and Scene Composition for user-interactive re-construction of the scenes at decoder side. The version 1 standardization will be finalized in 1998, with some possible minute changes. The expected application areas are real-time communication, mobile multimedia, internet/intranet accessing, broadcasting, storage media, surveillance, and so on.