서지주요정보
이동적응 공간필터의 성능분석 및 응용방안 = Analysis of motion adaptive spatial filter and its applications
서명 / 저자 이동적응 공간필터의 성능분석 및 응용방안 = Analysis of motion adaptive spatial filter and its applications / 김상연.
저자명 김상연 ; Kim, Sang-Yeon
발행사항 [대전 : 한국과학기술원, 1997].
Online Access 원문보기 원문인쇄

소장정보

등록번호

8008205

소장위치/청구기호

학술문화관(문화관) 보존서고

DEE 97043

휴대폰 전송

도서상태

이용가능

대출가능

반납예정일

초록정보

The motion adaptive spatial filter(MASF) is a kind of temporal or spatio-temporal filter with spatial mask. This is possible by using the motion information under the two assumptions:1) $\underline {\it {constant translation}}$:each pixel in video signal has locally constant translational motion, 2) $\underline{\it {signal invariance}}$ : signal is not changed along the motion trajectory. Typically, the assumptions are granted to be true in most part of image data except for motion boundary. Under these assumptions, signal variation along the temporal axis can be estimated in the spatial domain by using motion vector. This is basic concept of the MASF. The MASF has advantages compared with conventional filters in the aspect of implementation cost and filtering performance. Therefore, the MASF is expected to provide performance improvement in various applications such as subband coding, image format conversion, noise reduction, and so forth. However, there are several factors that affect the performance of the MASF. First, there may be some error in the motion vectors estimated in real image sequence. The inaccurate motion information causes erroneous temporal data prediction in the spatial domain, and therefore, makes distortions in the MASF operation. Second, the assumption of constant translation may not be satisfied in some cases. One of the cases is due to general 3-D motion such as rotation, zoom, deformation, etc., and another one occurs in motion boundary. In this dissertation, the error analysis of MASF for these performance factors and improvement method based on the analysis results are provided. Also,3-D extension and application of MASF are investigated. The MASF for 3-D filtering with separable spatial and temporal characteristics has been researched in previous works. In this dissertation, a generalized MASF design method, which can design 3-D MASF with arbitrary shaped passband(separable or not),is proposed. In addition, as an application of the MASF, a temporal interpolation method using the MASF is proposed. Experimental results show that the proposed method gives acceptable performance in the aspect of interpolated image quality and implementation cost.

서지기타정보

서지기타정보
청구기호 {DEE 97043
형태사항 xii, 123 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Sang-Yeon Kim
지도교수의 한글표기 : 김성대
지도교수의 영문표기 : Seong-Dae Kim
수록잡지명 : "Analysis of the effect of motion estimation error on the motion adaptive spatial filter and its application". Optical Engineering. The International society for optical engineering, vol. 35, no.7, pp. 2045-2050 (1996)
학위논문 학위논문(박사) - 한국과학기술원 : 전기및전자공학과,
서지주기 참고문헌 : p. 117-123
주제 이동적응 공간필터
3차원 필터링
시간축 보간
Motion Adaptive Spatial Filter
3-D Filtering
Temporal Interpolation
QR CODE qr code