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Subband Lossy and Lossless Coding

Research Project

Project/Area Number 11650393
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 情報通信工学
Research InstitutionKeio University

Principal Investigator

TAKAHASHI Shinichi  Fac.of Sci.& Tech., Keio University, Professor, 理工学部, 教授 (50051561)

Co-Investigator(Kenkyū-buntansha) IKEHARA Masaaki  Keio University, Associate Professor, 理工学部, 助教授 (00212796)
Project Period (FY) 1999 – 2000
Project Status Completed (Fiscal Year 2000)
Budget Amount *help
¥3,000,000 (Direct Cost: ¥3,000,000)
Fiscal Year 2000: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 1999: ¥2,000,000 (Direct Cost: ¥2,000,000)
KeywordsSubband / Lossy / Lossless / Coding / サブバンド符号化 / ウェーブレット変換 / 全域通過回路 / 可逆符号化 / 非可逆符号化
Research Abstract

We proposed two method for lossy and lossless image coding. One is based on wavelet transform which is implemented by two-channel IIR filter banks consisted of the parallel connection of allpass filters. This structure is very simple and less computational complexity, but the parameters for each mode are individual each other to get good performance. Another is based on lapped biorthogonal transform which is consisted of integer DCT and lifting steps to overcome the problem as mentioned above. By this method. Both lossy and lossless codings are implemented by the same structure or software. This is called reversible transform and is based on lossless mode. Lossy mode is realized by cutting bit stream. Taking consideration with the transfer function of lifting step, the length of bases function on each subband is variable. The blocking artifacts of which causes in DCT are reduced by making the length of lowpass filter long in the synthesis bank. Ringing artifacts are also reduced by making the length of bandpass and high pass filters short. Computer simulations show that the proposed method is compatible with the conventiona method in lossy mode and is sometimes much better than the conventional method in lossless mode.

Report

(3 results)
  • 2000 Annual Research Report   Final Research Report Summary
  • 1999 Annual Research Report
  • Research Products

    (14 results)

All Other

All Publications (14 results)

  • [Publications] Toshiyuki Uto: "Image Coding using Wavelets Based on Two-Channel linear Phase orthogonal IIR Filter Banks"IEEE Int.Conf.on Image Processing. Vol.2. 265-268 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Yutaka Kohno: "Lossless Coding using IIR Filter Banks"ISPACS1999. 37-40 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 宇戸寿幸: "IIRフィルタを用いた非可逆変換と画像符号化への応用"電子情報通信学会論文誌(A). (採録決定). (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 川田昌宏: "重複直交変換を用いた可逆・非可逆統一画像符号化"電子情報通信学会技術研究報告(DSP). 3月(発表予定). (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Toshiyuki Uto: "Image Coding using Wavelets Based on Two-channel Linear Phase orthogonal IIR Filter Banks"IEEE International Conference on Image Processing. vol2. 265-268 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Yutaka Kohno: "Lossless Coding using IIR Filter Banks"ISPACS 1999. 37-40

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] "Lossless Transforms and Lossy Transforms using IIR Filters and Their Application to Image Coding"IEICE Trans.(A). Vol.J84-A (To be published). (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] "A Reversible Image Coding using Lapped Biorthogonal Transforms"IEICE Technical Report(DSP). (To be published). (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Tashiyuki UTO: "Image Coding Using Wavelets Based on Two-channel Linear Phase Orthogonal IIR Filter Banks"IEEE International Conference on Image Processing. Vol2. 265-268 (1999)

    • Related Report
      2000 Annual Research Report
  • [Publications] Yutaka Kohno: "Lossless Coding using IIR Filter Banks"ISPACS'1999. 37-40 (1999)

    • Related Report
      2000 Annual Research Report
  • [Publications] 宇戸寿幸: "IIRフィルタを用いた非可逆変換と画像符号化への応用"電子情報通信学会論文誌(A). (採録決定). (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] 川田昌宏: "重複直交変換を用いた可逆・非可逆統一画像符号化"電子情報通信学会技術研究報告(DSP). 3月(発表予定). (2001)

    • Related Report
      2000 Annual Research Report
  • [Publications] Y.Kohno, M,Ikehara ,S.Takahashi: "Lossless Coding Using IIR Filter Banks"ISPACS'99. 37-40 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] T.Uto, M.Ikehara, S.Takahashi: "Image Coding Using Wavelets Based on Two-channel IIR Filter Banks"IEEE Int.Cont. on Image Processing. (1999)

    • Related Report
      1999 Annual Research Report

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Published: 1999-04-01   Modified: 2016-04-21  

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