입력방식이 제한된 모바일 VR상에서 Inertial Sensor를 활용한 Head Gesture 기반 가상 객체 조작에 관한 연구 (A Study on Virtual Object Manipulation Based on Head Gestures Using an Inertial Sensor in Mobile VR with Limited Input Interfaces)

서지정보

· 발행기관 : 한국CDE학회
· 수록지 정보 : 한국CDE학회 논문집 / 22권 / 4호 / 401 ~ 413페이지
· 저자명 : 김현석, 김민석, 이재열

초록

With the advent of various mobile VR HMDs, they have been widely used in many application areas, allowing a large number of users to obtain a higher degree of immersion in the VR environment. However, due to the limitation of input interfaces like as a click button in most mobile HMDs, it is difficult to interact with virtual objects and to manipulate them. In this paper, we present an approach to effectively manipulating 3D VR objects using head gesture-based interactions with a mobile HMD. The acquisition of the head gesture is accomplished by using an inertial sensor of the smart device. We classify interaction methods into three categories such as 1) menu-based interaction with a button, 2) head gesture-based sequential interaction, and 3) head gesture-based parallel interaction. In the menu-based interaction method, relevant menus are displayed around the virtual object, and whenever a menu for a required interaction such as rotation and translation is selected by the button click, the manipulation of the virtual object is performed. In the head gesture-based sequential interaction method, the user rotates his/her head in different but intuitive directions to translate or rotate the virtual object. The sequential interaction implies that either rotation or translation can be performed according to the head gesture. In the head gesture-based parallel interaction method, the rotation and the translation are performed simultaneously according to the head gesture. Based on the three interaction methods, we analyze the usability and efficiency of the proposed approach through quantitative and qualitative evaluation.

영어초록

With the advent of various mobile VR HMDs, they have been widely used in many application areas, allowing a large number of users to obtain a higher degree of immersion in the VR environment. However, due to the limitation of input interfaces like as a click button in most mobile HMDs, it is difficult to interact with virtual objects and to manipulate them. In this paper, we present an approach to effectively manipulating 3D VR objects using head gesture-based interactions with a mobile HMD. The acquisition of the head gesture is accomplished by using an inertial sensor of the smart device. We classify interaction methods into three categories such as 1) menu-based interaction with a button, 2) head gesture-based sequential interaction, and 3) head gesture-based parallel interaction. In the menu-based interaction method, relevant menus are displayed around the virtual object, and whenever a menu for a required interaction such as rotation and translation is selected by the button click, the manipulation of the virtual object is performed. In the head gesture-based sequential interaction method, the user rotates his/her head in different but intuitive directions to translate or rotate the virtual object. The sequential interaction implies that either rotation or translation can be performed according to the head gesture. In the head gesture-based parallel interaction method, the rotation and the translation are performed simultaneously according to the head gesture. Based on the three interaction methods, we analyze the usability and efficiency of the proposed approach through quantitative and qualitative evaluation.

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