Proceedings APGV : ... Symposium on Applied Perception in Graphics and Visualization. Symposium on Applied Perception in Graphics and Visualization最新文献
C. Walter, G. Bruder, Benjamin Bolte, Frank Steinicke
In this poster we present a comparison of two calibration techniques that allow to determine the field of view (FOV) for immersive head-mounted displays (HMDs).
{"title":"Evaluation of field of view calibration techniques for head-mounted displays","authors":"C. Walter, G. Bruder, Benjamin Bolte, Frank Steinicke","doi":"10.1145/2077451.2077488","DOIUrl":"https://doi.org/10.1145/2077451.2077488","url":null,"abstract":"In this poster we present a comparison of two calibration techniques that allow to determine the field of view (FOV) for immersive head-mounted displays (HMDs).","PeriodicalId":89458,"journal":{"name":"Proceedings APGV : ... Symposium on Applied Perception in Graphics and Visualization. Symposium on Applied Perception in Graphics and Visualization","volume":"46 1","pages":"125"},"PeriodicalIF":0.0,"publicationDate":"2011-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74566541","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Erin A. McManus, Qiufeng Lin, Aysu Erdemir, Stephen W. Bailey, J. Rieser, Bobby Bodenheimer
The trend in immersive virtual environments (VEs) is to include the users in a more active role by having them interact with the environment and objects within the environment. Studying action and perception in VEs, then, becomes an increasingly interesting and important topic to study. We chose to study a user's ability to judge errors in self-produced motion; more specifically, we had users throw a ball underhanded and, using a two alternative forced choice procedure, had them judge the fidelity of the trajectory of their throws. We chose throwing because it is a fairly common activity that many people have experience with and also so that we could model our study on previous research [Reitsma and Pollard 2003; Reitsma et al. 2008]. We changed the trajectories of the throws with three perturbations by altering both the vertical and horizontal components of the ball's initial velocity and also by changing the magnitude of the gravity acting on the ball over the course of its flight. All three perturbations were added in both positive and negative directions. Discrimination thresholds were determined for each subject using a maximum likelihood function and from these thresholds we were able to form some conclusions about users' ability to perceive errors in motion caused by their actions. Unlike Reitsma et. al. [2003; 2008], there was no difference between a user's ability to perceive alterations in the vertical and horizontal velocities of the ball's motion, regardless of direction. Also, lower gravities were marginally easier to detect than higher gravities.
沉浸式虚拟环境(ve)的趋势是通过让用户与环境和环境中的对象进行交互，使用户扮演更积极的角色。因此，研究虚拟企业的行为和感知成为一个越来越有趣和重要的研究课题。我们选择研究用户在自我产生的动作中判断错误的能力;更具体地说，我们让用户用假手扔球，并使用两种可选的强制选择程序，让他们判断投掷轨迹的保真度。我们之所以选择投掷，是因为这是一项相当普遍的活动，许多人都有过这样的经历，而且我们可以根据之前的研究(Reitsma and Pollard 2003;Reitsma et al. 2008]。我们通过改变球的初始速度的垂直和水平分量，以及在球的飞行过程中改变作用在球上的重力的大小，用三种扰动改变了抛球的轨迹。所有三种扰动都在正负方向上添加。使用最大似然函数确定每个受试者的判别阈值，从这些阈值中，我们能够形成关于用户感知由其行为引起的运动错误的能力的一些结论。不像Reitsma等人[2003;[2008]，无论方向如何，用户感知球运动的垂直和水平速度变化的能力没有区别。此外，较低的重力比较高的重力更容易被探测到。
{"title":"Perceiving alterations in trajectories while throwing in a virtual environment","authors":"Erin A. McManus, Qiufeng Lin, Aysu Erdemir, Stephen W. Bailey, J. Rieser, Bobby Bodenheimer","doi":"10.1145/2077451.2077456","DOIUrl":"https://doi.org/10.1145/2077451.2077456","url":null,"abstract":"The trend in immersive virtual environments (VEs) is to include the users in a more active role by having them interact with the environment and objects within the environment. Studying action and perception in VEs, then, becomes an increasingly interesting and important topic to study. We chose to study a user's ability to judge errors in self-produced motion; more specifically, we had users throw a ball underhanded and, using a two alternative forced choice procedure, had them judge the fidelity of the trajectory of their throws. We chose throwing because it is a fairly common activity that many people have experience with and also so that we could model our study on previous research [Reitsma and Pollard 2003; Reitsma et al. 2008]. We changed the trajectories of the throws with three perturbations by altering both the vertical and horizontal components of the ball's initial velocity and also by changing the magnitude of the gravity acting on the ball over the course of its flight. All three perturbations were added in both positive and negative directions. Discrimination thresholds were determined for each subject using a maximum likelihood function and from these thresholds we were able to form some conclusions about users' ability to perceive errors in motion caused by their actions. Unlike Reitsma et. al. [2003; 2008], there was no difference between a user's ability to perceive alterations in the vertical and horizontal velocities of the ball's motion, regardless of direction. Also, lower gravities were marginally easier to detect than higher gravities.","PeriodicalId":89458,"journal":{"name":"Proceedings APGV : ... Symposium on Applied Perception in Graphics and Visualization. Symposium on Applied Perception in Graphics and Visualization","volume":"37 1","pages":"23-28"},"PeriodicalIF":0.0,"publicationDate":"2011-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85848528","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
There are many visual cues that provide sensations of depth or distance in our observations of real-world 3D scenes as well as 2D images. In the latter case, these cues are monocular in that the images appear the same to both retinae and do not have binocular disparity that can be used to form depth judgments. Examples include perspective, relative sizes of objects, familiarity with sizes of objects, occlusion, contrast, brightness, color saturation, and haze. Contrast and brightness are of particular interest to us since they can be manipulated through a much greater range on high dynamic range displays than is possible on conventional displays.
{"title":"The role of contrast in the perceived depth of monocular imagery","authors":"Allan G. Rempel, W. Heidrich, Rafał K. Mantiuk","doi":"10.1145/2077451.2077478","DOIUrl":"https://doi.org/10.1145/2077451.2077478","url":null,"abstract":"There are many visual cues that provide sensations of depth or distance in our observations of real-world 3D scenes as well as 2D images. In the latter case, these cues are monocular in that the images appear the same to both retinae and do not have binocular disparity that can be used to form depth judgments. Examples include perspective, relative sizes of objects, familiarity with sizes of objects, occlusion, contrast, brightness, color saturation, and haze. Contrast and brightness are of particular interest to us since they can be manipulated through a much greater range on high dynamic range displays than is possible on conventional displays.","PeriodicalId":89458,"journal":{"name":"Proceedings APGV : ... Symposium on Applied Perception in Graphics and Visualization. Symposium on Applied Perception in Graphics and Visualization","volume":"144 1","pages":"115"},"PeriodicalIF":0.0,"publicationDate":"2011-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87568201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S. Sridharan, Reynold J. Bailey, Ann McNamara, C. Grimm
The ability to direct viewer gaze about an image has important application in medical image training and analysis. We use a novel gaze manipulation technique called Subtle Gaze Direction [Bailey et al. 2009] to guide novice users as they try to identify abnormalities in digital mammogram images. Subtle Gaze Direction is achieved by performing brief image-space modulations on specific regions of the viewer's peripheral vision in order to attract their attention. The viewer's gaze is monitored in real-time and the modulations are terminated before the viewer is allowed to scrutinize them with their high-acuity foveal vision. This approach is preferred to more overt techniques which require permanent alterations to the original images in order to highlight specific areas of interest. In our experiment we use Subtle Gaze Direction to guide novices along the scanpath of an expert radiologist. We hypothesized that this approach would increase the likelihood of novices correctly identifying irregularities in the mammograms.
{"title":"Subtle gaze manipulation for improved mammography training","authors":"S. Sridharan, Reynold J. Bailey, Ann McNamara, C. Grimm","doi":"10.1145/2077451.2077475","DOIUrl":"https://doi.org/10.1145/2077451.2077475","url":null,"abstract":"The ability to direct viewer gaze about an image has important application in medical image training and analysis. We use a novel gaze manipulation technique called Subtle Gaze Direction [Bailey et al. 2009] to guide novice users as they try to identify abnormalities in digital mammogram images. Subtle Gaze Direction is achieved by performing brief image-space modulations on specific regions of the viewer's peripheral vision in order to attract their attention. The viewer's gaze is monitored in real-time and the modulations are terminated before the viewer is allowed to scrutinize them with their high-acuity foveal vision. This approach is preferred to more overt techniques which require permanent alterations to the original images in order to highlight specific areas of interest. In our experiment we use Subtle Gaze Direction to guide novices along the scanpath of an expert radiologist. We hypothesized that this approach would increase the likelihood of novices correctly identifying irregularities in the mammograms.","PeriodicalId":89458,"journal":{"name":"Proceedings APGV : ... Symposium on Applied Perception in Graphics and Visualization. Symposium on Applied Perception in Graphics and Visualization","volume":"36 5 1","pages":"112"},"PeriodicalIF":0.0,"publicationDate":"2011-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87670319","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In practical applications, it is common that a 3D mesh undergoes some lossy operations (e.g. simplification, watermarking, compression, noise contamination, etc.). Since the end users of 3D meshes are often human beings, it is thus important to derive metrics that can faithfully assess the perceptual distortions induced by these operations. The derived metrics can be used, for instance, to benchmark a family of geometry processing algorithms, or to guide the design of new algorithms. Like in the case of image quality assessment, metrics based on mesh geometric distances (e.g. Haus-dorff distance and root mean squared error) cannot correctly predict the visual quality degradation. Recently, several perceptually-motivated metrics have been proposed (e.g. mesh structural distortion measure and roughness-based measures) [Lavoué and Corsini 2010]. Those perceptual metrics work well on static meshes, but are less efficient on dynamic meshes because they may mistakenly evaluate "natural" deformations as of rather low perceptual quality (c.f. Section 3). Based on the fact that surface movements in a dynamic mesh sequence are often defined as quasi-isometric deformations (especially in the case of human body and animals animations), we propose in this poster a perceptually-driven mesh quality metric that is capable of distinguishing quasi-isometric deformations from the actual visually unpleasant distortions. To the best of our knowledge, such a metric does not exist in the literature.
{"title":"Towards perceptual quality evaluation of dynamic meshes","authors":"Fakhri Torkhani, K. Wang, Annick Montanvert","doi":"10.1145/2077451.2077479","DOIUrl":"https://doi.org/10.1145/2077451.2077479","url":null,"abstract":"In practical applications, it is common that a 3D mesh undergoes some lossy operations (e.g. simplification, watermarking, compression, noise contamination, etc.). Since the end users of 3D meshes are often human beings, it is thus important to derive metrics that can faithfully assess the perceptual distortions induced by these operations. The derived metrics can be used, for instance, to benchmark a family of geometry processing algorithms, or to guide the design of new algorithms. Like in the case of image quality assessment, metrics based on mesh geometric distances (e.g. Haus-dorff distance and root mean squared error) cannot correctly predict the visual quality degradation. Recently, several perceptually-motivated metrics have been proposed (e.g. mesh structural distortion measure and roughness-based measures) [Lavoué and Corsini 2010]. Those perceptual metrics work well on static meshes, but are less efficient on dynamic meshes because they may mistakenly evaluate \"natural\" deformations as of rather low perceptual quality (c.f. Section 3). Based on the fact that surface movements in a dynamic mesh sequence are often defined as quasi-isometric deformations (especially in the case of human body and animals animations), we propose in this poster a perceptually-driven mesh quality metric that is capable of distinguishing quasi-isometric deformations from the actual visually unpleasant distortions. To the best of our knowledge, such a metric does not exist in the literature.","PeriodicalId":89458,"journal":{"name":"Proceedings APGV : ... Symposium on Applied Perception in Graphics and Visualization. Symposium on Applied Perception in Graphics and Visualization","volume":"29 1","pages":"116"},"PeriodicalIF":0.0,"publicationDate":"2011-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78414881","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
J. A. Jones, S. Ellis, J. Swan, Gurjot Singh, S. Ellis, M. S. University, N. Ames
A frequently observed problem in medium-field virtual environments is the underestimation of egocentric depth. This problem has been described numerous times and with widely varying degrees of severity, and although there has been considerable progress made in modifying observer behavior to compensate for these misperceptions, the question of why these errors exist is still an open issue. This paper presents the findings of a series of experiments, comprising 103 participants, that attempts to identify and quantify the source of a pattern of adaptation and improved depth judgment accuracy over time scales of less than one hour. Taken together, these experiments suggest that peripheral visual information is an important source of information for the calibration of movement within medium-field virtual environments.
{"title":"Peripheral visual information and its effect on distance judgments in virtual and augmented environments","authors":"J. A. Jones, S. Ellis, J. Swan, Gurjot Singh, S. Ellis, M. S. University, N. Ames","doi":"10.1145/2077451.2077457","DOIUrl":"https://doi.org/10.1145/2077451.2077457","url":null,"abstract":"A frequently observed problem in medium-field virtual environments is the underestimation of egocentric depth. This problem has been described numerous times and with widely varying degrees of severity, and although there has been considerable progress made in modifying observer behavior to compensate for these misperceptions, the question of why these errors exist is still an open issue. This paper presents the findings of a series of experiments, comprising 103 participants, that attempts to identify and quantify the source of a pattern of adaptation and improved depth judgment accuracy over time scales of less than one hour. Taken together, these experiments suggest that peripheral visual information is an important source of information for the calibration of movement within medium-field virtual environments.","PeriodicalId":89458,"journal":{"name":"Proceedings APGV : ... Symposium on Applied Perception in Graphics and Visualization. Symposium on Applied Perception in Graphics and Visualization","volume":"9 1","pages":"29-36"},"PeriodicalIF":0.0,"publicationDate":"2011-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84263768","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In order to achieve accurate results in user studies in the fields of Psychophysics, Experimental Psychology, Ophthalmology and clinical studies there are high demands towards an imaging pipeline presenting these stimuli in an experiment (as illustrated in Figure 1). For example, display stability and repeatability, both short term and long term are crucial when conducting research leading to robust results. Further important factors are the perceptual limits of a graphics pipeline. Here, two important elements are the achievable dynamic range and the color gamut, which would ideally approximate or exceed the capabilities of the human visual system (HVS). In an optimal solution, those stimulus dimensions would be displayed with continuous intensity levels between their respective extrema (e.g. from dark to light) when presenting them to participants.
{"title":"A high bit depth digital imaging pipeline for vision research","authors":"Timo Kunkel, G. Damberg, L. Johnson","doi":"10.1145/2077451.2077484","DOIUrl":"https://doi.org/10.1145/2077451.2077484","url":null,"abstract":"In order to achieve accurate results in user studies in the fields of Psychophysics, Experimental Psychology, Ophthalmology and clinical studies there are high demands towards an imaging pipeline presenting these stimuli in an experiment (as illustrated in Figure 1). For example, display stability and repeatability, both short term and long term are crucial when conducting research leading to robust results. Further important factors are the perceptual limits of a graphics pipeline. Here, two important elements are the achievable dynamic range and the color gamut, which would ideally approximate or exceed the capabilities of the human visual system (HVS). In an optimal solution, those stimulus dimensions would be displayed with continuous intensity levels between their respective extrema (e.g. from dark to light) when presenting them to participants.","PeriodicalId":89458,"journal":{"name":"Proceedings APGV : ... Symposium on Applied Perception in Graphics and Visualization. Symposium on Applied Perception in Graphics and Visualization","volume":"4 1","pages":"121"},"PeriodicalIF":0.0,"publicationDate":"2011-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90042812","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Nicolas Schneider, M. Dorr, L. Pomârjanschi, E. Barth
Children with developmental dyslexia show significant differences in their perception from control subjects and often are not able to mask text surrounding the words they currently read [Geiger and Lettvin 2000]. The ability to mask surrounding text (called lateral masking) is fundamental for proficient reading. Geiger and Lettvin presented a practical method that allows children with dylexia to learn a new visual strategy for reading. Their results showed major improvements in the reading proficiency.
{"title":"A gaze-contingent reading tutor program for children with developmental dyslexia","authors":"Nicolas Schneider, M. Dorr, L. Pomârjanschi, E. Barth","doi":"10.1145/2077451.2077480","DOIUrl":"https://doi.org/10.1145/2077451.2077480","url":null,"abstract":"Children with developmental dyslexia show significant differences in their perception from control subjects and often are not able to mask text surrounding the words they currently read [Geiger and Lettvin 2000]. The ability to mask surrounding text (called lateral masking) is fundamental for proficient reading. Geiger and Lettvin presented a practical method that allows children with dylexia to learn a new visual strategy for reading. Their results showed major improvements in the reading proficiency.","PeriodicalId":89458,"journal":{"name":"Proceedings APGV : ... Symposium on Applied Perception in Graphics and Visualization. Symposium on Applied Perception in Graphics and Visualization","volume":"9 1","pages":"117"},"PeriodicalIF":0.0,"publicationDate":"2011-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80449189","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Duchowski, Brandon Pelfrey, D. House, Rui I. Wang
While determining 2D gaze position using eye tracking is common practice, the efficacy of using eye tracking to measure 3D gaze point in a stereoscopic display has not been carefully studied. In this paper we explore this issue using a custom Wheatstone stereoscope augmented with an eye tracker. In a pilot study, we showed that there is strong evidence that eye vergence measurements do, in fact, track the depth component of the 3D stereo gaze point. In a subsequent full study, we compare depth estimation for a scene viewed in four different ways: without either stereo or motion parallax, without stereo but with motion parallax, with stereo but without motion parallax, and with both stereo and motion parallax. We show a significant effect related to depth from eye vergence for both of the stereo cases, but no effect for the monoscopic cases. Since depth from vergence is very noisy, we use a Butterworth filter to smooth the data and show that this greatly improves the stability of the depth reading without significant lag or loss in accuracy. We also demonstrate that using quadratic regression to perform a depth calibration can greatly improve the accuracy of the depth measurement.
{"title":"Measuring gaze depth with an eye tracker during stereoscopic display","authors":"A. Duchowski, Brandon Pelfrey, D. House, Rui I. Wang","doi":"10.1145/2077451.2077454","DOIUrl":"https://doi.org/10.1145/2077451.2077454","url":null,"abstract":"While determining 2D gaze position using eye tracking is common practice, the efficacy of using eye tracking to measure 3D gaze point in a stereoscopic display has not been carefully studied. In this paper we explore this issue using a custom Wheatstone stereoscope augmented with an eye tracker. In a pilot study, we showed that there is strong evidence that eye vergence measurements do, in fact, track the depth component of the 3D stereo gaze point. In a subsequent full study, we compare depth estimation for a scene viewed in four different ways: without either stereo or motion parallax, without stereo but with motion parallax, with stereo but without motion parallax, and with both stereo and motion parallax. We show a significant effect related to depth from eye vergence for both of the stereo cases, but no effect for the monoscopic cases. Since depth from vergence is very noisy, we use a Butterworth filter to smooth the data and show that this greatly improves the stability of the depth reading without significant lag or loss in accuracy. We also demonstrate that using quadratic regression to perform a depth calibration can greatly improve the accuracy of the depth measurement.","PeriodicalId":89458,"journal":{"name":"Proceedings APGV : ... Symposium on Applied Perception in Graphics and Visualization. Symposium on Applied Perception in Graphics and Visualization","volume":"12 1","pages":"15-22"},"PeriodicalIF":0.0,"publicationDate":"2011-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78300805","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
For real-time animation of characters, Level of Detail (LOD) techniques are usually deployed to achieve optimal efficiency and realism. Tools that can aid an application designer or developer to deploy simplification methods and LOD representations under different circumstances are therefore needed. In this paper we explore the perception of texture, silhouette and lighting artifacts on simplified character models, including the effect animation intensity has on the perceptibility of these artifacts. We propose novel methods to simulate each artifact separately, and test their effects in isolation and cumulatively. Our results provide useful insights and guidelines, including the importance of silhouette preservation. An adaptation of PerceptualDiff for predicting simplification detection has been developed, which can be used to guide automatic model placement and LOD selection in realtime character applications.
{"title":"Perception of simplification artifacts for animated characters","authors":"M. Larkin, C. O'Sullivan","doi":"10.1145/2077451.2077469","DOIUrl":"https://doi.org/10.1145/2077451.2077469","url":null,"abstract":"For real-time animation of characters, Level of Detail (LOD) techniques are usually deployed to achieve optimal efficiency and realism. Tools that can aid an application designer or developer to deploy simplification methods and LOD representations under different circumstances are therefore needed. In this paper we explore the perception of texture, silhouette and lighting artifacts on simplified character models, including the effect animation intensity has on the perceptibility of these artifacts. We propose novel methods to simulate each artifact separately, and test their effects in isolation and cumulatively. Our results provide useful insights and guidelines, including the importance of silhouette preservation. An adaptation of PerceptualDiff for predicting simplification detection has been developed, which can be used to guide automatic model placement and LOD selection in realtime character applications.","PeriodicalId":89458,"journal":{"name":"Proceedings APGV : ... Symposium on Applied Perception in Graphics and Visualization. Symposium on Applied Perception in Graphics and Visualization","volume":"74 1","pages":"93-100"},"PeriodicalIF":0.0,"publicationDate":"2011-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84710716","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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