The Journal of Korean Institute of Communications and Information Sciences (한국통신학회논문지)

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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Residual Image Compression based on Wavelet Transform

웨이브릿 변환을 이용한 스테레오 영상 압축

  • Published : 2000.04.01
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Abstract

In this paper, a new stereo image compression algorithm is suggested in which the residual image extracted from the stereo image by the disparity-compensated prediction method is compressed using the wavelet transform considering the inter & intra correlation between subbands. The compression performance of the proposed method is significantly improved by comparing with the conventional algorithm such as EPIC, EPWIC & JPEG through the computer simulation and the PSNR is also increased about 3.5dB compared with the EPIC. Finally, the stereo image having a good 3D effect can be reconstructed from the compressed image data by the proposed method.

본 논문에서는 시차보상 방법에 의해 추출된 오차 영상을 대역간 및 대역내의 상관관계를 고려한 웨이브릿 변환을 이용함으로써 압축 부호화 하는 새로운 스테레오 영상압축 알고리즘을 제시하였다. 본 논문에서 제시된 영상 압축 부호화 방식은 기존의 압축 알고리즘인 EPIC, EPWIC, JPEG등과 컴퓨터 시뮬레이션을 통한 비교분석을 통해 모두 향상된 영상 압축률을 나타냈으며, PSNR경우도 EPWIC에 비해 3.5dB 향상된 30.5dB로 나타났다. 또한 본 논문에서 제시된 방법으로 압축 전송된 영상으로부터 충분한 입체감을 갖는 스테레오 영상을 재현할 수 있었다.

Keywords

References

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