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We propose solutions for seamlessly integrating synthetic objects into background photographs at interactive rates. Recently developed image-based methods are used to capture real-world illumination, and sphere-mapping is used illuminate and render the synthetic objects. We present a new procedure for approximating shadows cast by the real-world(More)
An experimental method for modelling and rendering liquids in motion is presented. A particle system is used to model dynamic liquid behaviour, while implicit surfaces serve as a wrapper to support realistic rendering methods. Aspects of particle-environment interaction and the use of dynamically sized particle primitives are discussed. Techniques used in(More)
This paper describes a publicly available virtual reality (VR) system, GNU/MAVERIK, which forms one component of a complete 'VR operating system'. We give an overview of the architecture of MAVERIK, and show how it is designed to use application data in an intelligent way, via a simple, yet powerful, callback mechanism which supports an object-oriented(More)
We inhabit an environment in which the vertical axis is of special significance. It is the line along which the local force of gravity is exerted, and which extends perpendicularly from the surface about which we navigate. It also indicates the general direction of natural scene illumination, and is the axis to which we self-orient for most day-to-day(More)
The paper describes experiments in telerobotics via low-bandwidth communication channels. A mobile robot with sonar and infrared rangending sensors as well as tactile and proprioceptive sensors at Manchester University in the United Kingdom was controlled by three of the authors from Bremen University in Germany in real time, using low bandwidth internet(More)