서지주요정보
토포그래피를 위한 무아레 무늬의 차수 결정과 가시도 향상에 관한 연구 = Order determination and visibility enhancement of moire topographic fringes
서명 / 저자 토포그래피를 위한 무아레 무늬의 차수 결정과 가시도 향상에 관한 연구 = Order determination and visibility enhancement of moire topographic fringes / 임재선.
저자명 임재선 ; Lim, Jae-Sun
발행사항 [대전 : 한국과학기술원, 1989].
Online Access 원문보기 원문인쇄

소장정보

등록번호

8000013

소장위치/청구기호

학술문화관(문화관) 보존서고

DAP 8918

SMS전송

도서상태

이용가능

대출가능

반납예정일

초록정보

Two methods for determining the absolute order of moire fringe have been developed. The first one is for shadow type moire typography and capable of automatic measurement in real-time. Light source moves with constant speed, and intensity variations on the object surface are analyzed by FFT. Experimental results show that the method can be successfully applied to shadow moire topography and does not need the continuity of the object surface. Measurement time is less than 9 s, and the accuracy of measuring absolute depth is better than 1% for measuring range. The other one is for projection type moire topography. It uses gratings in which color lines are inserted so that the absolute order of a fringe can be determined even if some discontinuities exist on the object. The increasing or decreasing of fringe orders is easily distinguished. The visibility of additive type moire fringe was enhanced to that of subtractive moire in real-time by using computer image processing technique. The enhanced moire was applied to the moire topography to show the possibility of practical use. A noise reduction technique that can be used for uneven background level is also suggested.

서지기타정보

서지기타정보
청구기호 {DAP 8918
형태사항 iii, 99 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Jae-Sun Lim
지도교수의 한글표기 : 정명세
지도교수의 영문표기 : Myung-Sai Chung
학위논문 학위논문(박사) - 한국과학기술원 : 물리학과,
서지주기 참고문헌 : p. 80-91
주제 Visibility.
Moire topography.
고속 Fourier 산란. --과학기술용어시소러스
가시도. --과학기술용어시소러스
모아레. --과학기술용어시소러스
간섭 무늬. --과학기술용어시소러스
Fourier transformations.
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