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So called "false image projector" with a novel notion "retrotransmission" is proposed and early prototype will be shown in the demo. This article explains the other research activities of authors' lab as well.
The goal of this project is to develop a training system that can simulate the welding process in real-time and give feedback that avoids learning wrong motion patterns for beginning welders and can be used to analyze the process by the teacher afterwards. The system is based mainly on COTS components. A standard PC with a Dual-core CPU and a medium-end nVidia graphics card is sufficient. Input is...
We demonstrate composable volumetric lenses as interpretational tools for geological visualization. The lenses provide a constrained focus region that provides alternative views of datasets to the user while maintaining the context of surrounding features. Our rendering method is based on run-time composition of GPU shader programs that implement per-fragment clipping to lens boundaries and surface...
The Gold Museum, in Bogota, Colombia, displays the largest collection of pre-Hispanic gold artifacts in the world and it has been renovated recently. With funds from the Colombian Government, we have created a multimodal experience that allows visitors to touch, hear, and see small artifacts. Here we present a description of this demo, its functionality, and technical requirements.
The Globefish is a novel desktop input device for three-dimensional object manipulation and viewpoint navigation. It consists of an elastically suspended 3D trackball, which provides a natural mapping for position-controlled 3D rotations. Rate-controlled 3D translations are performed by pushing the trackball into the appropriate direction. The device is manipulated by the fingertips allowing for precise...
We are investigating the utility of a projection-based stereoscopic two-user system for applications in the automotive industry. In this paper we compare real-world pointing to pointing at virtual objects in a two-user scenario. In our study we investigated the following situation: One user points at an object while the second person has to guess the referenced object. Our results indicate that pointing...
Realistic behavior of control actuators is important for virtual proto-typing applications. We present a systematic approach for modeling such articulated components as described in the European Standard EN 894-3. Control actuators may have several rotational and translational degrees of freedom (DOFs), possibly with discrete lock states. During user interactions, information about the actuators'...
We propose the use of virtual environments to simulate augmented reality (AR) systems for the purposes of experimentation and usability evaluation. This method allows complete control in the AR environment, providing many advantages over testing with true AR systems. We also discuss some of the limitations to the simulation approach. We have demonstrated the use of such a simulation in a proof of...
We present an integrated interface that takes advantage of several VR technologies for the exploration of small artifacts in a Museum. This interface allows visitors to observe pieces in 3D from several viewpoints, touch them, feel their weight, and hear their sound at touch. From one hand, it will allow visitors to observe artifacts closer, in order to know more about selected pieces and to enhance...
This article introduces explosion diagrams to augmented reality (AR) applications. It presents algorithms to seamlessly integrate an object's explosion diagram into a real world environment, including the AR rendering of relocated objects textured with live video and the restoration of visual information which are hidden behind relocated objects. It demonstrates several types of visualizations for...
We present an application of interactive global illumination and spatially augmented reality to architectural daylight modeling that allows designers to explore alternative designs and new technologies for improving the sustainability of their buildings. Images of a model in the real world, captured by a camera above the scene, are processed to construct a virtual 3D model. To achieve interactive...
In many technical support systems, live support agents help end-users resolve issues with computer software/hardware and appliances/gadgets in the real world. The dominant mode of communication in such systems is still the telephone, while instant messaging, video communication, and remote take-over have emerged as additional modalities in recent years. In contrast to these, 3D avatar based visual...
This paper presents a solution for the photorealistic rendering of synthetic objects into dynamic real scenes, in Augmented Reality applications. In order to achieve this goal, an Image Based Lighting approach is proposed, where environment maps with different levels of glossiness are generated for each virtual object in the scene at every frame. Due to this, illumination effects, such as color bleeding...
Immersive virtual environments (IVEs) allow participants to interact with their 3D surroundings using natural hand gestures. Previous work shows that the addition of haptic feedback cues improves performance on certain 3D tasks. However, we believe this is not true for all situations. Depending on the difficulty of the task, we suggest that we should expect differences in the ballistic movement of...
The following topics are dealt with: virtual reality; haptics; augmented reality; collaboration; avatar; eye gaze; offactory display; clinical and medical application; graphics; modelling; presence; and perception.
Due to the intrinsic subtlety and dynamics of eye movements, automated generation of natural and engaging eye motion has been a challenging task for decades. In this paper we present an effective technique to synthesize natural eye gazes given a head motion sequence as input, by statistically modeling the innate coupling between gazes and head movements. We first simultaneously recorded head motions...
Trials on the transmission of olfactory information together with audio/visual information are currently underway. However, a problem exists in that continuous emission of scent leaves scent in the air causing human olfactory adaptation. To resolve this problem, we aimed at minimizing the quantity of scent ejected using an ink-jet olfactory display developed. Following the development of a breath...
Civil Support Teams (CST) must be ready to respond to a variety of potential situations involving dangerous materials. For many of these materials, standard real-world training methods can be successfully employed. Training involving radiological agents, however, poses a greater challenge than for other agents due to a lack of materials that can suitably mimic the situation without the danger of the...
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