外文翻譯---利用基于手指跟蹤技術(shù)的多點觸摸桌面增強多用戶交互體驗

1、附 錄 A 翻譯原文翻譯原文：Enhancing Multi-user Interaction with Multi-touch Tabletop DisplaysUsing Hand TrackingK.C. Dohse 1, Thomas Dohse 2, Jeremiah D. Still 1, Derrick J. Parkhurst 13Human Computer Interaction Program 1, Compute

2、r Science Department 2, Psychology Department Iowa State University { kcd | dohse | derrick | jeremiah } @ iastate.eduAbstractA rear-projection multi-touch tabletop display was augmented with hand tracking utilizing comp

3、uter vision techniques. While both touch detection and hand tracking can be independently useful for achieving interaction with tabletop displays, these techniques are not reliable when multiple users in close proximity

4、simultaneously interact with the display. To solve this problem, we combine touch detection and hand tracking techniques in order to allow multiple users to simultaneously interact with the display without interference.

5、Our hope is that by considering activities occurring on and above a tabletop display, multiuser interaction will become more natural and useful, which should ultimately support collaborative work.1. IntroductionLarge dis

6、plays are useful for information visualization when multiple people must jointly use the information to work together and accomplish a single goal. The social interactions that result from using a shared display can be h

7、ighly valuable [1]. However, these displays can fail to allow multiple users to simultaneously interact with the information. Tabletop interfaces can provide a large shared display while simultaneously Figure A1: Three u

8、sers working together using a rear-projection multi-touch tabletop display augmented with hand tracking using an overhead camera.2. Related Work Techniques and technologies used for interaction detection on tabletop disp

9、lays are rapidly maturing, but many researchers are still seeking better methods for capturing natural interactions made by multiple users within the context of real world applications. There are a number of approaches t

10、o tracking user interactions with a tabletop display. One successful method is to use a surface material that is laden with sensors, such as the commercially available DiamondTouch system. This system uses a technique wh

11、ere a circuit is capacitively closed when the user touches the table [4]. Interfaces like this one use front projection due to the opaque surface needed for the sensors. Other systems such as the metaDESK also use sensor

12、s, but integrate them in physical objects that can be manipulated [5]. Another common approach is to use video cameras to track interactions. For example, the HoloWall uses a semi-opaque diffuser that allows infrared (IR

13、) light projected from behind the screen to reflect off of objects at a certain distance from the surface [6]. The TouchLight interface uses two IR cameras to determine when contact with the screen has occurred [7]. Othe

14、r projection based systems, like the ViCat use overhead cameras to track hand gestures [8]. This table does not use physical touches on the surface, but uses an overhead camera to track hand gestures in order to interact