서지주요정보
Optical flow를 이용한 3차원 거리 정보 추출에 관한 연구 = A study on the three-dimensional range finding by an optical flow
서명 / 저자 Optical flow를 이용한 3차원 거리 정보 추출에 관한 연구 = A study on the three-dimensional range finding by an optical flow / 이재웅.
저자명 이재웅 ; Yi, Jae-Ung
발행사항 [대전 : 한국과학기술원, 1991
Online Access 제한공개(로그인 후 원문보기 가능)원문

소장정보

등록번호

8002016

소장위치/청구기호

학술문화관(문화관) 보존서고

MPE 9120

휴대폰 전송

도서상태

이용가능

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반납예정일

초록정보

In this paper, image filtering method is proposed for the situation that the interframe displacement between the images is large. When the optical flow is measured from the images obstained by the cameras in different positions and with different orientations, the larger the interframe displacement of a point between the images is, the more optical flow measurement error increases because of the deviation from the assumption that the interframe displacement in an image is small when deriving the motion constraint equation. By the proposed filtering method, first, the maximum interframe phase difference that minimizes the effect of large interframe displacment on optical flow measurement error is determined, and the real interframe phase difference is compared with the maximum interframe phase difference as frequency is increased, thus the cutoff frequency of Butterworth lowpass filter is determined. In the experiment, the effectiveness of the proposed filtering method is investigated for the 1-dimensional synthetic images. And when this filtering method is applied to real images, the result of recovering the three-dimensional range is presented. As a result, three-dimensional range data is sufficiently well estimated at the area of objects in an image.

서지기타정보

서지기타정보
청구기호 {MPE 9120
형태사항 [iii], 41 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Jae-Ung Yi
지도교수의 한글표기 : 오준호
지도교수의 영문표기 : Jun-Ho Oh
학위논문 학위논문(석사) - 한국과학기술원 : 생산공학과,
서지주기 참고문헌 수록
주제 Displacement transducers.
Optical measurements.
Filters (Mathematics)
화상 처리. --과학기술용어시소러스
필터링. --과학기술용어시소러스
광학 필터. --과학기술용어시소러스
거리 측정. --과학기술용어시소러스
Image processing.
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