서지주요정보
머리의 움직임을 추적하기 위한 카메라 보정 방법에 관한 연구 = (A) study on the camera calibration method for head tracking
서명 / 저자 머리의 움직임을 추적하기 위한 카메라 보정 방법에 관한 연구 = (A) study on the camera calibration method for head tracking / 임창주.
발행사항 [대전 : 한국과학기술원, 1997].
Online Access 원문보기 원문인쇄

소장정보

등록번호

8007278

소장위치/청구기호

학술문화관(문화관) 보존서고

MIE 97016

휴대폰 전송

도서상태

이용가능

대출가능

반납예정일

등록번호

9003998

소장위치/청구기호

서울 학위논문 서가

MIE 97016 c. 2

휴대폰 전송

도서상태

이용가능

대출가능

반납예정일

리뷰정보

초록정보

This paper is concerned with the development and evaluation of the camera calibration method for a real-time head tracking system. Tracking of head movements is important in the design of an eye-controlled human/computer interface and the area of virtual environment. We propose a video-based head tracking system. A camera is mounted on a subject's head and it takes the front view containing eight 3-dimensional reference points(passive retro-reflecting markers) fixed at the known position(computer monitor). The reference points are captured by image processing board. These points are used to calculate the position (3-dimensional) and orientation of the camera. A suitable camera calibration method for providing accurate extrinsic camera parameters is proposed. The method have three steps. In the first step, the image center is calibrated using the method of varying focal length. In the second step, the focal length and the scale factor are calibrated from the Direct Linear Transformation(DLT) matrix obtained from the known position and orientation of the camera. In the third step, the position and orientation of the camera is calculated from the DLT matrix, using the calibrated intrinsic camera parameters. Experimental results show that the average error of camera positions(3-dimensional) is about 0.53˚, the angular errors of camera orientations are less than 0.55˚ and the data aquisition rate is about 10Hz. The results of this study can be used for the tracking of head movements related to the eye-controlled human/computer interface and the virtual environment.

서지기타정보

서지기타정보
청구기호 {MIE 97016
형태사항 vi, 49 p. : 삽화 ; 26 cm
언어 한국어
일반주기 저자명의 영문표기 : Chang-Joo Lim
지도교수의 한글표기 : 박경수
지도교수의 영문표기 : Kyung-Soo Park
학위논문 학위논문(석사) - 한국과학기술원 : 산업공학과,
서지주기 참고문헌 : p. 47-49
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