Google眼镜又迎对手，i-Air Touch让你和虚拟屏幕互动

工研院(ITRI)开发出一款i-Air Touch (iAT)智能眼镜，乍看之下有点像是头戴式3D View-Master照片观赏器，但这款采用Air Touch 凌空触控技术的突破性智能系统可追踪手势动作，从而触控激活用户与3D视觉头戴式显示器的互动。 i-Air Touch头戴式显示器藉由分别为用户的眼睛提供左右不同影像的方式，从而在用户面前约30公分(12 英寸)处投影一个3D虚拟影像。i-Air Touch还结合安装在眼镜上的相机，可追踪用户的手势动作，使其可透过触控方式与虚拟显示器进行互动，在技术上还比Google Glass更胜一筹。 工研院声称其i-Air Touch是首款可实现让用户以触控方式随意与虚拟影像互动的透明头戴式显示器。用户只要使用与在一般触控屏幕上相同的手势即可，如挥手换页、两指放大缩小，以及在虚拟键盘上轻点选取输入等，而且仅限于穿戴上这款智能眼镜的人才能看到。由于眼镜是透明的，用户在穿戴上后仍可自在地行走、导航以及与他周遭的人事物进行互动。

i-Air Touch头戴式显示器让用户可触控激活悬浮于半空中的虚拟屏幕
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安装在眼镜上方的相机镜头采用工研院自有的 DDDR相机，以达到毫米级的精准度来追踪手势动作，用户可经由触控方式与悬浮于半空中的虚拟显示影像互动。由于这款 DDR 相机用相位编码(实现距离)与色彩编码(确认指尖位置)，因此只有在用户的指尖进入眼镜前28-32公分范围内时，它才能感应到触控输入。 而当用户指尖离开此范围内时，该相机还会关闭辨识电子装置作业，从而节省电池电量。一旦DDR相机侦测到触控输入，即传送一个信号至主应用处理器以确认用户手指的动作，让用户得以与虚拟屏幕互动。 i-Air Touch 凌空触控技术采用模块化建置，使其三项主要组件──透明眼镜显示器、 3D DDDR相机以及 Air Touch 凌空触控互动软件──可分别与其它可穿戴式系统整合。工研院声称，该研发团队目前正致力于缩小相机模块使其得以整合于智能眼镜的挂耳部份，从而改善i- Air Touch 眼镜目前看来较笨重的外观。i-Air Touch 的所有相关技术均出自工研院，目前已可授权给电子OEM 。 这款i-Air Touch头戴式显示器将在11月获颁2013百大科技研发奖( R&D 100 Award)。 本文授权编译自EE Times，版权所有，谢绝转载 编译：Susan Hong 参考英文原文：Wearable Display Goes 1 Step Beyond Google Glass，by R. Colin Johnson

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{pagination} Wearable Display Goes 1 Step Beyond Google Glass R. Colin Johnson PORTLAND, Ore. — Looking a bit like a head-mounted View-Master, the i-Air Touch glasses from the Industrial Technology Research Institute (ITRI), of Hsinchu, Taiwan, is a breakthrough system that tracks hand movements to enable touch-activated interaction with a 3D virtual head-mounted display. The i-Air Touch glasses will receive a 2013 R&D 100 Award on Nov. 7 in Orlando, Fla. The i-Air Touch glasses project a virtual 3D image about 30 centimeters (12 inches) in front of the user by supplying separate left and right images to the user's eyes. Going one-step beyond Google Glass, the i-Air Touch also incorporates cameras mounted above the glasses to track the user's hand movements to enable him to perform touch-activated interaction with the virtual display. ITRI, Taiwan's largest independent research lab, claims its i-Air Touch technology realizes the world's first see-through, head-mounted display that allows users to freely interact with it using touch. The user can use all the same gestures used on a normal touchscreen, such as swiping to change pages, pinching to zoom, and tapping to select entries on a virtual keyboard, all of which is only visible to the person wearing the glasses. And since the glasses are see-through, the user can still walk, navigate, and interact with objects and people in her surroundings. The i-Air Touch interface allows users to touch activate virtual screens floating in mid air. The camera mounted above the glasses uses ITRI's own DDDR (defined distance with defined range) camera to track hand movements with millimeter accuracy, allowing the user to use touch to interact with the virtual display in the same manner as if a touch screen were floating in mid-air. Because the DDDR camera uses both phase-coding (for distance) and color-coding (to identify fingertips), it will accept touch input only when the user's fingers are within a range of 28 to 32 centimeters (11 to 12.5 inches) in front of the glasses. To conserve battery power, the camera shuts down the recognition electronics whenever the user's fingers are not within that range. Once detected within range, the DDDR sends a signal to the host application processor identifying the user's finger movements, allowing him to interact with the virtual display. The i-Air Touch technology is modular, allowing its three components -- the see-through glasses display, the 3D DDDR camera, and the air-touch interactive software -- to be separately integrated with other wearable systems. ITRI claims that it is currently downsizing the camera module to fit into the ear-pieces of its eye-glasses, to eliminate the bulky look of the i-Air Touch glasses. As with all ITRI's technologies, the components of the i-Air Touch technology are available for licensing by electronics original equipment manufacturers.