PoCoMo: Projected Collaboration using Mobile Devices

As personal projection devices become more common they will be able to support a range of exciting and unexplored social applications. We present a novel system and method that enables playful social interactions between multiple projected characters. The prototype consists of two mobile projector-camera systems, with lightly modified existing hardware, and computer vision algorithms to support a selection of applications and example scenarios. Our system allows participants to discover the characteristics and behaviors of other characters projected in the environment. The characters are guided by hand movements, and can respond to objects and other characters, to simulate a mixed reality of life-like entities

Exploring Interaction with a Simulated Wrist-Worn Projection Display

One of the major limitations of portable computing devices is the small size of their built-in displays. Fortunately, extremely small projection systems are being developed that can be integrated into devices that are small enough to be body-worn, yet can project a large image onto surfaces in the environment. To explore how a user might interact with this near-horizon technology, we created a functional simulation of a wrist-worn projector. We then developed a set of interaction techniques that assume that the wrist-worn computer and projector are equipped with position and orientation sensors, in addition to a touch-sensitive builtin screen. To complement the techniques that rely on the spatial manipulation of the user’s forearm and the device itself, we also describe the use of a cursorless watch user interface that minimizes the need for the user to look down at the device’s built-in screen. Finally, we present a sample application that illustrates our interaction techniques. 1