대한전자공학회:학술대회논문집 (Proceedings of the IEEK Conference)
- 대한전자공학회 2006년도 하계종합학술대회
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- Pages.333-334
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- 2006
웨이블릿변환에 기반한 정보압축
Information Compression Based on Wavelet Transform
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Kim, Eung-Kyeu
(Div. of Information Communication & Computer Engineering, College of Engineering, Hanbat National University) ;
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Lee, Soo-Jong
(Speech/Language Information Research Department)
- 발행 : 2006.06.21
초록
In this study, information compression based on the wavelet technique is described. The principle of signal or image compression is performed by optimization of quantization, that is the bit allocation taking advantage of their energy concentration in low frequency components. The wavelet transform is one of frequency decomposition, such as the discrete cosine transform or sub-band filtering, and it is also implemented as a filter bank. Wavelet transform with use of spatially localized basis function can reduce several drawbacks in conventional methods. The benifit of wavelet based compression method is described as comparing the transform method to another ones.
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