Comprehending and exploring large and complex data is becoming increasingly important for a diverse population of users in a wide range of application domains. visualization has proven to be well-suited in supporting ...
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The proceedings contain 31 papers. The topics discussed include: using eye-tracking to assess different image retargeting methods;modeling and animating eye blinks;measuring gaze depth with an eye tracker during stere...
ISBN:
(纸本)9781450308892
The proceedings contain 31 papers. The topics discussed include: using eye-tracking to assess different image retargeting methods;modeling and animating eye blinks;measuring gaze depth with an eye tracker during stereoscopic display;computational visual attention systems and their cognitive foundation: a survey;perceiving alterations in trajectories while throwing in a virtual environment;peripheral visual information and its effect on distance judgments in virtual and augmented environments;the influence of avatar (self and character) animations on distance estimation, object interaction and locomotion in immersive virtual environments;evaluation of walking in place on a wii balance board to explore a virtual environment;bimodal perception of audio-visual material properties for virtual environments;and perceptual considerations for motion blur rendering.
We present SoftAR, a novel spatial augmented reality (AR) technique based on a pseudo-haptics mechanism that visually manipulates the sense of softness perceived by a user pushing a soft physical object. Considering t...
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We present SoftAR, a novel spatial augmented reality (AR) technique based on a pseudo-haptics mechanism that visually manipulates the sense of softness perceived by a user pushing a soft physical object. Considering the limitations of projection-based approaches that change only the surface appearance of a physical object, we propose two projection visual effects, i. e., surface deformation effect (SDE) and body appearance effect (BAE), on the basis of the observations of humans pushing physical objects. The SDE visualizes a two-dimensional deformation of the object surface with a controlled softness parameter, and BAE changes the color of the pushing hand. Through psychophysical experiments, we confirm that the SDE can manipulate softness perception such that the participant perceives significantly greater softness than the actual softness. Furthermore, fBAE, in which BAE is applied only for the finger area, significantly enhances manipulation of the perception of softness. We create a computational model that estimates perceived softness when SDE+ fBAE is applied. We construct a prototype SoftAR system in which two application frameworks are implemented. The softness adjustment allows a user to adjust the softness parameter of a physical object, and the softness transfer allows the user to replace the softness with that of another object.
The proceedings contain 33 papers. The topics discussed include: statistical regularities in low and high dynamic range images;a reassessment of the simultaneous dynamic range of the human visual system;measuring the ...
ISBN:
(纸本)9781450302487
The proceedings contain 33 papers. The topics discussed include: statistical regularities in low and high dynamic range images;a reassessment of the simultaneous dynamic range of the human visual system;measuring the perception of light inconsistencies;evaluating effectiveness of illustrative visualization of schematic diagrams for maintenance tasks;analysis of disparity distortions in omnistereoscopic displays;how does presentation method and measurement protocol affect distance estimation in real and virtual environments?;egocentric distance judgments in a large screen display immersive virtual environment;can i pass?: using affordances to measure perceived size in virtual environments;a system for exploring large virtual environments that combines scaled translational gain and interventions;saliency for animated meshes with material properties;and perception of linear and nonlinear motion properties using a FACS validated 3D facial model.
The proceedings contain 33 papers. The topics discussed include: distance perception in virtual environments: a closer look at the horizon and the error;distance perception in NPR immersive virtual environments, revis...
ISBN:
(纸本)9781605587431
The proceedings contain 33 papers. The topics discussed include: distance perception in virtual environments: a closer look at the horizon and the error;distance perception in NPR immersive virtual environments, revisited;display size does not affect egocentric distance perception of naturalistic stimuli;transitional environments enhance distance perception in immersive virtual reality systems;effects of scale change on distance perception in virtual environments;using immersive virtual reality to evaluate pedestrian street crossing decisions at a roundabout;the interaction between motion and form in expression recognition;screen-space perceptual rendering of human skin;video viewing preferences for HDR displays under varying ambient illumination;display considerations for night and low-illumination viewing;and evaluation of glyph-based multivariate scalar volume visualization techniques.
In many different application fields particle-based simulation, like molecular dynamics, are used to study material properties and behavior. Nowadays, simulation data sets consist of millions of particles and thousand...
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In many different application fields particle-based simulation, like molecular dynamics, are used to study material properties and behavior. Nowadays, simulation data sets consist of millions of particles and thousands of time steps challenging interactive visualization. Direct glyph-based representations of the particle data are important for the visual analysis process and these rendering methods can be optimized to be able to work sufficiently fast with huge data sets. However, the perception of the implicit spatial structures formed by such data is often hindered by aliasing and visual clutter. Especially the depth of these structures can be grasped better if visual cues are applied, even in interactive representations. We hence present a method to apply object-space ambient occlusion, based on local neighborhood information, to large timedependent particle-based data sets without the need for any precomputations. Based on density information collected in real-time, glyph-based representations of the data sets can be visually enhanced without significant impact on the rendering performance allowing to visualize multi-million particle data sets interactively on commodity workstations.
In this paper, we propose a novel volume illustration technique inspired by interference microscopy, which has been successfully used in biological, medical and material science over decades. Our approach simulates th...
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In this paper, we propose a novel volume illustration technique inspired by interference microscopy, which has been successfully used in biological, medical and material science over decades. Our approach simulates the optical phenomenon in interference microscopy that accounts light interference over transparent specimens, in order to generate contrast enhanced and illustrative volume visualization results. Specifically, we propose PCVR (Phase- Contrast Volume Rendering) and DICVR (Differential Interference Contrast Volume Rendering) corresponding to Phase-Contrast microscopy and Differential Interference Contrast (DIC) microscopy respectively. Without complex transfer function design, our proposed method can enhance the image contrast and structure details according to the subtle change of Optical Path Differences (OPD), and illustrate the thickness change and occluded structures with interferometry metaphors. In addition, we also develop a user interface to enable slicing specimen sections in volume data. Focus+ context lens are also included in the system for convenient data navigation and exploration. As the proposed methods are based upon widely applied microscopy techniques, they are intuitive for domain experts to explore and analyze the volume data with the proposed methods. The feedbacks from domain users suggest our proposed techniques are useful volume visualization approaches complimentary to the traditional ones.
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