[Thurrell et al. 1998] first observed that the perceived speed of optic flow decreases in linear proportion to the increasing physical speed of locomotion on a treadmill and proposed this as a mechanism to discount fr...
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ISBN:
(纸本)9781450302487
[Thurrell et al. 1998] first observed that the perceived speed of optic flow decreases in linear proportion to the increasing physical speed of locomotion on a treadmill and proposed this as a mechanism to discount from the visual signal retinal motion due to self-motion, described as an arthrovisual effect [Thurrell and Pelah 2005]. Since human locomotion consists of a complex of articulated movement, step parameters and associated afferent, efferent and efference copy signals, questions arise as to the relative contributions of these component messages to the reduction in the perception of optic flow speed (POFS). Here we report experiments [Casey 2010] on the role of step frequency (SF) previously proposed as a reliable estimate for perception of the speed of self-motion [Durgin et al. 2007;Dong et al. 2008].
Optic flow is the coherent motion of a region in the visual field, and the visual system is astoundingly effective at perceiving this large-scale and complex percept. Whenever you rotate your head or move through a sc...
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ISBN:
(纸本)9781450302487
Optic flow is the coherent motion of a region in the visual field, and the visual system is astoundingly effective at perceiving this large-scale and complex percept. Whenever you rotate your head or move through a scene, nearly every part of your visual field moves at a different speed and velocity. For example, as you walk through a forest, the trees in the horizon appear to slowly expand, and the trees on your sides appear to rapidly move to the extremities of your vision visual field and disappear. In spite of such a myriad of local motions, all of this information is concisely summarized as moving forward. Such summary encoding of a large variety of elements makes this percept a potentially useful tool to exploit for visualization. For that reason, our goal in this study is to test the visual system's ability to use optic flow for a basic visualization task, feature detection.
In this paper, we explore the perception of finger motions of virtual characters. In three experiments, designed to investigate finger animations, we asked the following questions: When are errors in finger motion not...
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In this paper, we investigate the ability of humans to determine the sex of conversing characters, based on audio and visual cues. We used a corpus of motions and sounds captured from three male and three female actor...
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In this paper we explore the ability of the human visual system to detect inconsistencies in the illumination of objects in images. We specifically focus on objects being lit from different angles as the rest of the i...
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Previous research, which has used images of real human faces and mostly from the same facial expression database [Matsumoto and Ekman 1988], has shown that individuals perceive emotions universally across cultures. We...
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ISBN:
(纸本)9781450302487
Previous research, which has used images of real human faces and mostly from the same facial expression database [Matsumoto and Ekman 1988], has shown that individuals perceive emotions universally across cultures. We conducted an experiment to determine whether culture affects the perception of emotions rendered on virtual faces. Specifically, we test the holistic perception hypothesis that individuals from collectivist cultures, such as East Asians, visually sample information from central regions of the face (near the top of the nose by the eyes), as opposed to sampling from specific features of the face. If the holistic perception hypothesis is true, then individuals will confuse emotional facial expressions that are different in terms of the shape of the mouth facial feature. Our stimuli were computer generated using a face graphical rendering tool, which affords a high level of experimental control for perception researchers.
At any given instant, much of a display appears in a user's peripheral vision. Based on the information available in a glance, the user moves their eyes, scanning the display for items of interest, and piecing tog...
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This course presents timely, relevant examples on how researchers have leveraged perceptual information for optimization of rendering algorithms, to better guide design and presentation in (3D stereoscopic) display me...
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ISBN:
(纸本)9781450303958
This course presents timely, relevant examples on how researchers have leveraged perceptual information for optimization of rendering algorithms, to better guide design and presentation in (3D stereoscopic) display media, and for improved visualization of complex or large data sets. Each presentation will provide references and short overviews of cutting-edge current research pertaining to that area. We will ensure that the most up-to-date research examples are presented by sourcing information from recent perception and graphics conferences and journals such as ACM Transactions on perception, paying particular attention work presented at the 2010 symposium on applied perception in graphics and visualization.
In order to perform daily maintenance and repair tasks in complex electrical and mechanical systems, technicians commonly utilize a large number of diagrams and documents detailing system properties in both electronic...
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In this paper we present the first Facial Action Coding System (FACS) valid model to be based on dynamic 3D scans of human faces for use in graphics and psychological research. The model consists of FACS Action Unit (...
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