سیستم جدید تعامل انسان و تلویزیون ۳ بعدی
Abstract
I. Introduction
II. Related Work
III. System Design
IV. User Study
V. Result and Discussion
Authors
Figures
References
Abstract
The input method based on free-hand gestures has gradually become a hot research direction in the field of human-computer interaction. Hand gestures like sign languages, however, demand quite a lot of knowledge and practice for interaction, and air writing methods require their users to hold the arm and hand in mid-air for a period of time. These methods limit the user experience and get severer when a large number of gestures are required. To address the problem, this paper presents a novel human-3DTV interaction system based on a set of simple free-hand gestures for direct-touch interaction with a virtual interface to facilitate human-3DTV interaction. Specifically, our system projects a virtual interface in front of the user who wears the 3D shutter glass, and the user just stretches the arm and touches the virtual interface like performing on a smart phone with a touch screen, using gestures such as Click, Slide, Hold, Drag and Zoom In/Out. Our system is able to recognize the user’s gesture fast and accurately, as the system only needs to search for a small region neighboring the virtual interface for a small set of gesture types. Because we adopt the key gestures using on smart phones, our free-hand gestures can be easily used by anyone with only a brief training. The users feel more comfortable than traditional gesture input methods and can effectively interact with 3DTV using our system. We report a comprehensive user study on accuracy and speed to validate the advantages of the proposed human-3DTV interaction system.
Introduction
The fast growing technologies in digital Television (TV) has dramatically increased the richness of multimedia content. With the launch of smart television projects by many important companies including Google, Apple, Samsung, Xiaomi etc., modern TV set allows the user to surf Internet, install a wide variety of TV apps, play on-line games, upload/share videos from external sources, enjoy double-screen experiences and so on. In addition to have the above functions, 3D Television (3DTV) can significantly enhance the visual experience of viewers by employing techniques like an active shutter 3D system or a polarized 3D system, and it has attracted much attention in both the cinema and televisor industries. Although the users are now given various selections of 3DTV content, the human-3DTV interaction methods have been left behind. Most 3DTV sets still use the conventional interaction method, i.e. , a physical remote controller for users to input commands. For example, to enter the lengthy website link or WiFi password, the user of Xiaomi TV has to perform multiple operations with the physical remote controller which only contains Left/Right/Up/Down/Ok buttons. Consequently, given the diversity and complexity of the 3DTV contents and functions, the conventional human-3DTV interaction strategy strongly limit the user’s experience. To fulfil requirements of new Human-3DTV interaction, researchers have experimented various natural and human-centered approaches. Some interaction designs are the extensions of traditional remote controller, such as joystick [1] that pivots on a base and reports its angle or direction, laser-pointer style direct-pointing device [2], wireless keyboard [3] and touch-based interfaces on smart phones [4].