Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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Zonal/vector quantization technique in the DCT domain

DCT 영역에서의 조날 코딩과 벡터 양자화 기법

  • Kim, Dong-Sik (Dept. of Control and Instrumentation Eng., Seoul Notional University) ;
  • Lee, Sang-Uk (Dept. of Control and Instrumentation Eng., Seoul Notional University)
  • 김동식 (서울대학교 공과대학 제어계측공학과) ;
  • 이상욱 (서울대학교 공과대학 제어계측공학과)
  • Published : 1987.07.03
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Abstract

In this paper, we discussed the quantization technique in the DCT domain employing a vector quantizer (VQ), and described the relations between the DCT and the VQ. And, we introduced a zonal coding technique for the OCT coefficients based on the classified VQ technique proposed in [2]. We shall show that this technique reduced the coding complexity about 30% while maintaining the same image quality as shown in [2]. A result of simulation with a natural image is also presented.

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