In recent years, a variety of motion recognition devices for HMD have been presented. Operation method using the motion recognition is the best one for the characteristics of HMD that the user's sight is obstructed in using the contents. The recent HMD devices have the head-tracking feature recognizing the movement of the user's head. However, the operation of the avatar using head-tracking lead to the depressed usability caused by the unfamiliar use. In this paper, the avatar was moved using the head tracking function built in HMD as a basic operating device, which enhanced the usability of the contents by showing the movement of avatar whose human motion capture was linked to the position of the user's head in the third person point of view. The user is able to trace his own position to operate the contents by the avatar in virtual space, which would reveal the potential for utilization of the user interface by which the avatar is controlled through inputting the function of tracking direction.

ABSTRACT
 1. 서론
 2. 동작 인식을 위한 장치
  2.1 오큘러스 리프트
  2.2 방향 추적 기능
  2.3 방향 정보의 획득
 3. 사용자 자세와 연동한 아바타 조작
  3.1 사용자와 아바타의 동작 연동
  3.2 가상환경의 구축
  3.3 사용자의 움직임 제한
  3.4 사용자 인터페이스
 4. 실험 및 결과 분석
  4.1 사용성의 정의
  4.2 실험 방법
  4.3 측정 방법
  4.4 실험 결과
 5. 결론
 참고문헌

• 이홍섭(Kwangwoon University Graduate School) | Hong-sub Lee
• 정형원(Shinhan University Computer Science & Engineering) | Hyung-woon Jung
• 박의준(Shinhan University Computer Science & Engineering) | Wee-joon Park Correspondence to