Wavelet Image Data Compression Using Vector Quantization

벡터양자화를 이용한 웨이브렛 영상데이터 압축

  • 최유일 (광운대학교 정보제어공학과) ;
  • 조창호 (광운대학교 정보제어공학과) ;
  • 이상효 (광운대학교 정보제어공학과) ;
  • 조도현 (인하공업전문대학) ;
  • 이종용 (광운대학교 정보제어공학과)
  • Published : 2003.07.01

Abstract

In this paper, an image vector quantization method is proposed not only to improve the compression ratio but also to reduce the computation cost. The proposed method could save the computation cost of codebook generation and encoding by using the modified LBG algorithm of Partial Search Partial Distortion (PSPD) in wavelet domain, by which the code book was constructed together with the partial codebook search, the partial code vector elements, and the interruption criterion. We have designed and implemented the vector quantizer to verify the improvement in reducing compression ratio in encoding processing and reducing the computation cost.

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