Marcus Thiebaux

Marcus Thiebaux
Independent Researcher · none

About

31
Publications
5,932
Reads
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1,508
Citations

Publications

Publications (31)
Conference Paper
BML realizers are complex software modules that implement a standardized interface -the BML specication language- to steer the behavior of a virtual human. We aim to promote and test the compliance of realizers that implement this interface. To this end we contribute a corpus of example BML scripts and a tool called RealizerTester that can be used...
Conference Paper
Full-text available
Gaze is an extremely important aspect of human face to face interaction. Over the course of an interaction, a single individual's gaze can perform many different functions, such as regulating communication, expressing emotion, and attending to task performance. When gaze shifts occur, where they are directed, and how they are performed all provide...
Conference Paper
Full-text available
Researchers demand much from their embodied conversa- tional agents (ECAs), requiring them to be both life-like, as well as responsive to events in an interactive setting. We nd that a exible combination of animation approaches may be needed to satisfy these needs. In this paper we present SmartBody, an open source modular framework for animating E...
Article
As scientific data sets increase in size, dimensionality, and complexity, new high resolution, interactive, collaborative networked display systems are required to view them in real-time. Increasingly, the principles of virtual reality (VR) are being applied to modern scientific visualization. One of the tenets of VR is stereoscopic (stereo or 3d)...
Article
Full-text available
To address a part of the challenge of testing and comparing various 3D user interface devices and methods, we are currently developing and testing a VR 3D User Interface benchmarking scenario. The approach outlined in this paper focuses on the capture of human interaction performance on object selection and manipulation tasks using standardized and...
Article
The southern portion of the San Andreas fault, between Cajon Creek and Bombay Beach has not seen a major event since 1690, and has therefore accumulated a slip deficit of 5-6 m. The potential for this portion of the fault to rupture in a single M7.7 event is a major component of seismic hazard in southern California and northern Mexico. TeraShake i...
Article
Recent scientific and engineering advances increase the demands on tools for high performance interactive visual exploration of large-scale, multi-dimensional simulation and sensor-based datasets. For example, earthquake scientists can now study earthquake phenomena in detail via "first principle," physics-based, large-scale simulations in a time-v...
Article
The visuospatial ability referred to as mental rotation has been shown to produce one of the largest and most consistent sex differences, in favor of males, in the cognitive literature. The current study utilizes both a paper-and-pencil version of the mental rotations test (MRT) and a virtual environment for investigating rotational ability among 4...
Article
Full-text available
This study introduced a 3D rod-and-frame test in a virtual environment (VERF) and evaluated its reliability and concurrent validity according to four scoring methods previously used with 2D tests. Thirty nonimpaired older adults (15 men; 15 women) aged 64-86 (M=73.6) manipulated a rod in a semi-immersive 3D virtual environment. Results suggested th...
Article
Advances in science and engineering have put high demands on tools for high-performance large-scale visual data exploration and analysis. For example, earthquake scientists can now study earthquake phenomena from first principle physics-based simulations. These simulations can generate large amounts of data, possibly high spatial resolution, and lo...
Article
The Southern California Earthquake Center (SCEC) is a diverse, distributed scientific community drawn together by the shared vision of understanding the cause and impact of earthquakes. As such, the domain of scientific discourse ranges from understanding the localized causes of fault ruptures to modeling how resulting seismic waves travel through...
Article
Computational grids are enabling collaboration between scientists and organizations to generate and archive extremely large datasets across shared, distributed resources. There is a need to visually explore such data throughout the life-cycle of projects. Practical exploration of large datasets requires visualization tools that can function in the...
Article
The visuospatial ability referred to as mental rotation has been shown to produce consistent sex differences, in favor of males. The current study utilizes a virtual environment for investigating rotational ability among 44 adult subjects. Based on the literature, we expected sex differences on both MRT and VRSR. Given sex differences in hemispheri...
Article
Full-text available
Virtual reality (VR) technology offers new options for the creation of sophisticated tools that could be applied in the areas of assessment and rehabilitation of cognitive and functional processes. VR systems allow for the precise presentation and control of dynamic, multisensory, three-dimensional (3-D) stimulus environments, as well as the record...
Article
Full-text available
Virtual Reality (VR) technology offers potential for sophisticated new tools that could be applied in the areas of neuropsychological assessment and cognitive rehabilitation. If empirical studies demonstrate effectiveness, virtual environments (VEs) could be of considerable benefit to persons with cognitive and functional impairments due to traumat...
Article
A third-generation synchrotron radiation source provides enough brilliance to acquire complete tomographic data sets at 100 nm or better resolution in a few minutes. To take advantage of such high-brilliance sources at the Advanced Photon Source, we have constructed a pipelined data acquisition and reconstruction system that combines a fast detecto...
Conference Paper
Computational grids are enabling collaboration between scientists and organizations to generate and archive extremely large datasets across shared, distributed resources. There is a need to visually explore such data throughout the life-cycle of projects. Practical exploration of large datasets requires visualization tools that can function in the...
Conference Paper
Full-text available
We describe an initial prototype of a holodeck- like environment that we have created for the Mission Rehearsal Exercise Project. The goal of the project is to create an experience learning system where the participants are immersed in an environment where they can encounter the sights, sounds, and circumstances of real-world scenarios. Virtual hum...
Article
Full-text available
Virtual Environment (VE) technology offers clinical assessment and rehabilitation options that are currently not available using traditional neuropsychological methods. Advancements in this type of immersive information technology could produce tools that enhance the sci- entific study of human cognitive/functional processes and improve our capacit...
Article
To master complex tasks, such as operating complicated machinery, people need hands-on experience facing a wide range of situations. They also need a mentor that can demonstrate procedures, answer questions, and monitor their performance, and they may need teammates if their task requires multiple people. Since it is often impractical to provide su...
Conference Paper
A new generation of specialized scientific instruments called synchrotron light sources allow the imaging of materials at very fine scales. However, in contrast to a traditional microscope, interactive use has not previously been possible because of the large amounts of data generated and the considerable computation required translating this data...
Conference Paper
Virtual environment (VE) technology is increasingly being recognized as a useful medium for the study, assessment, and rehabilitation of cognitive processes and functional abilities. The capacity of VE technology to create dynamic three-dimensional (3D) stimulus environments, within which all behavioral responding can be recorded, offers clinical a...
Article
Our increased ability to model and measure a wide variety of phenomena has left us awash in data. In the immediate future, the authors anticipate collecting data at the rate of terabytes per day from many classes of applications, including simulations running on teraFLOPS-class computers and experimental data produced by increasingly more sensitive...
Article
The Virtual Environments Laboratory at the University of Southern California (USC) has initiated a research program aimed at developing virtual reality (VR) technology applications for the study, assessment, and rehabilitation of cognitive processes. This technology is seen to offer many advantages for these aims. The status of two ongoing VR proje...
Article
Gender differences in cognitive and behavioral performance have been reported throughout the psychological literature. Consequently, gender differences should be considered and controlled for when cognitive research is conducted in virtual environments (VEs). These variables may include gender-related differences in cognitive performance, susceptib...
Conference Paper
A new generation of specialized scientific instruments called synchrotron lightsources allow the imaging of materials at very fine scales. However, in contrast toa traditional microscope, interactive use has not previously been possible becauseof the large amounts of data generated and the considerable computation requiredtranslating this data into...
Article
Full-text available
Virtual reality (VR) technology offers the potential to create sophisticated new tools that could be applied to the neuropsychological assessment and cognitive rehabilitation of persons with acquired brain injury, neurological disorders, and learning disabilities. Testing and training scenarios that are difficult, if not impossible, to deliver usin...
Article
Virtual reality (VR) is an emerging computer-driven simulation technology that appears to be well matched to the assessment and rehabilitation needs of persons with cognitive impairments and functional disabilities. Persons with these difficulties due to acquired brain injuries, neurological disorders, and developmental disabilities could benefit f...
Article
Full-text available
Virtual Reality technology offers the potential to create sophisticated new tools which could be applied in the areas of neuropsychological assessment and cognitive rehabilitation. If empirical studies demonstrate effectiveness, virtual environments (VE's) could be of considerable benefit to persons with cognitive and functional impairments due to...

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