서지주요정보
X선 영상에서 기하학적 특징치 정보를 이용한 다면체의 자세 측정 = Pose estimation of polyhedral objects based on geometric features
서명 / 저자 X선 영상에서 기하학적 특징치 정보를 이용한 다면체의 자세 측정 = Pose estimation of polyhedral objects based on geometric features / 김재완.
저자명 김재완 ; Kim, Jae-Wan
발행사항 [대전 : 한국과학기술원, 2001].
Online Access 원문보기 원문인쇄

소장정보

등록번호

8012405

소장위치/청구기호

학술문화관(문화관) 보존서고

MME 01074

휴대폰 전송

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초록정보

An x-ray vision is a useful method to measure or inspect objects which can not be done by conventional camera vision method. Our problem is to identify the pose of an object from an x-ray projection image. It is assumed here that the x-ray imaging coordinates, such as the locations of the x-ray source and the image plane, are predetermined and that the object geometry is known. For simplicity, only polyhedral objects are considered whose image features consist of corner points and edge lines. By detecting the corner points or lines in the image, the pose of an object can be estimated iteratively by using the feature matching between an object and an x-ray projection image. To extract the features of objects in x-ray images, we propose a reliable and efficient image processing algorithm. The method uses the typical characteristics of the x-ray image for the polyhedral object that the intensity distribution also can be represented by a polyhedron which consists of planes. By this approximation, edges in the image can be determined by extraction of the edge lins between the adjacent planes in the intensity distribution. Then, by applying Hough Transform to the edge images and analyzing the lines, the vertices can be determined. In the final manuscript, the performance of the proposed image processing method is compared with that of the conventional ones such as sobel, laplacian operators. Also, performance of the algorithms proposed here will be discussed in detail including the limitations of the method.

서지기타정보

서지기타정보
청구기호 {MME 01074
형태사항 iv, 69 p. : 삽도 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Jae-Wan Kim
지도교수의 한글표기 : 조형석
지도교수의 영문표기 : Hyung-Suck Cho
학위논문 학위논문(석사) - 한국과학기술원 : 기계공학전공,
서지주기 참고문헌 수록
주제 자세 측정
X선 영상
다면체
루프 에지
코너점
pose estimation
X-ray image
Polyhedral object
roof edge
corner point
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