융합신호처리학회 학술대회논문집 (Proceedings of the Korea Institute of Convergence Signal Processing)
- 한국신호처리시스템학회 2000년도 하계종합학술대회논문집
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- Pages.253-256
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- 2000
9/7텝을 갖는 정수 웨이브릿 변환을 이용한 무손실 정지영상 압축
A Lossless Image Compression using Wavelet Transform with 9/7 Integer Coefficient Filter Bank
초록
In this paper, we propose the lossless image compression algorithm using the integer wavelet transform. Recently, the S+P transform is widely used and computed with only integer addition and bit-shift operations, but not proper to remove the correlation of smooth images. then we compare the Harr wavelet of the S+P transform with various integer coefficient filter banks and apply 9/7 ICFB to the wavelet transform. In addition, we propose a entropy-coding method that exploits the multiresolution structure and the feedback of the prediction error, and can efficiently compress the transformed image for progressive transmission. Simulation results are compared to the compression ratio using the S+P transform with different types of images.
키워드