서지주요정보
QMF 뱅크 설계 방법을 이용한 개선된 M-대역 웨이브렛 기저의 설계 = A design of improved M-band wavelet bases using QMF bank design methods
서명 / 저자 QMF 뱅크 설계 방법을 이용한 개선된 M-대역 웨이브렛 기저의 설계 = A design of improved M-band wavelet bases using QMF bank design methods / 권상근.
저자명 권상근 ; Kwon, Sang-Keun
발행사항 [대전 : 한국과학기술원, 1994].
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소장정보

등록번호

8005036

소장위치/청구기호

학술문화관(문화관) 보존서고

DEE 94030

SMS전송

도서상태

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초록정보

The wavelet transform has been paid a lot of attentions in image processing areas due to its flexibility in representation of non-stationary signal. Indepentently to the wavelet transform, quadrature mirror filter(QMF) bank design techniques were studied systematically in sub-band coding area for image data compression. It was shown that the wavelet transform and the QMF bank were mutually close related. Firstly, compactly supported orthonormal and biorthogonal wavelet bases are designed such that the one using lossless system and the other using 2-band perfect reconstruction condition at z-domain which has been employed in QMF bank design. These approaches are turned out to be simpler than existing methods. Secondly, a design method for M-band orthogonal wavelet bases(OWB) was announced to generalize the 2-band OWB employing lossless system. But frequency characteristics of M-band OWB designed by conventional method are not satisfactory. To improve the frequency characteristics of M-band OWB, new design method is presented. It has shown that M-band OWB designed by this presented method has better performances in an application of SBC of image as well as frequency characteristics. Lastly, new transform method called overlapping wavelet transform(OWT) is proposed in order to reduce the blocking effect in transform coding. The blocking effect can be reduced in OWT by overlapping the transformed block with adjacent blocks as LOT. It has shown that the coding performances of OWT and its computational complexity are almost the same as DCT, but blocking effect is considerably reduced in reconstructed image.

서지기타정보

서지기타정보
청구기호 {DEE 94030
형태사항 vi, 129 p. : 삽도 ; 26 cm
언어 한국어
일반주기 부록 수록
저자명의 영문표기 : Sang-Keun Kwon
지도교수의 한글표기 : 김재균
지도교수의 영문표기 : Jae-Kyoon Kim
학위논문 학위논문(박사) - 한국과학기술원 : 전기 및 전자공학과,
서지주기 참고문헌 : p. 125-129
주제 Wavelets (Mathematics)
Electric filters.
Data compression (Computer science)
화상 처리. --과학기술용어시소러스
필터 (회로) --과학기술용어시소러스
화상 압축. --과학기술용어시소러스
Image processing.
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