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Full-Text Articles in Physical Sciences and Mathematics
The Vacuum Buffer, Voicu Popescu
The Vacuum Buffer, Voicu Popescu
Link Foundation Modeling, Simulation and Training Fellowship Reports
Image-based rendering (IBR) techniques have the potential of alleviating some of the bottlenecks of traditional geometry-based rendering such as modeling difficulty and prohibitive cost of photorealism. One of the most appealing IBR approaches uses images enhanced with per-pixel depth and creates new views by 3D warping (IBRW). Modeling a scene with depth images lets one automatically capture intricate details, which are hard to model conventionally. Also, rendering from such representations has the potential of being efficient since it seems that the number of samples that need to be warped is independent of the scene complexity and is just a fraction …
Computer Graphics Optique: Optical Superposition Of Projected Computer Graphics, Aditi Majumder
Computer Graphics Optique: Optical Superposition Of Projected Computer Graphics, Aditi Majumder
Link Foundation Modeling, Simulation and Training Fellowship Reports
We present some ideas and demonstrations for a hybrid projector-based rendering and display technique we call Computer Graphics Optique. Instead of partially overlapping projected images to achieve a wide-area display, we completely overlap projected images on top of each other to achieve the addition of light and color in an "optical composition buffer''. The idea is to use the optical composition to replace some analytical computation, to increase rendering speed, gain flexibility, intensity range, and intensity resolution. Where projector-based displays are appropriate, potential uses include the optical realization of certain effects normally requiring a digital accumulation buffer, the optical composition …
Enhancing Training And Presence In Virtual Environments Using Passive Haptics, Brent E. Insko
Enhancing Training And Presence In Virtual Environments Using Passive Haptics, Brent E. Insko
Link Foundation Modeling, Simulation and Training Fellowship Reports
One of the worst virtual environment experiences is to virtually contact something and feel nothing. Visual-haptic sensory conflicts are normally dominated by visual perception. Therefore, augmenting a high-fidelity visual virtual environment with low-fidelity haptic objects, called passive haptics, should markedly improve both sense of presence and task training effectiveness. Testing these hypotheses, I found adding a 1.5 inch physical ledge to a visual-cliff virtual environment increased participants' sense of presence as measured by subjective questionnaires, observed participant behaviors, and physiological responses. I next examined memory model creation and training effectiveness for a navigation task in a virtual environment with and …
Computer Graphics Optique: Optical Superposition Of Projected Computer Graphics, Aditi Majumder
Computer Graphics Optique: Optical Superposition Of Projected Computer Graphics, Aditi Majumder
Link Foundation Modeling, Simulation and Training Fellowship Reports
We present some ideas and demonstrations for a hybrid projector-based rendering and display technique we call Computer Graphics Optique. Instead of partially overlapping projected images to achieve a wide-area display, we completely overlap projected images on top of each other to achieve the addition of light and color in an "optical composition buffer''. The idea is to use the optical composition to replace some analytical computation, to increase rendering speed, gain flexibility, intensity range, and intensity resolution. Where projector-based displays are appropriate, potential uses include the optical realization of certain effects normally requiring a digital accumulation buffer, the optical composition …