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Proceedings of the ACM on computer graphics and interactive techniques最新文献

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Interactive simulation of plume and pyroclastic volcanic ejections 羽流和火山碎屑喷发的交互模拟
Proceedings of the ACM on computer graphics and interactive techniques Pub Date : 2022-05-04 DOI: 10.1145/3522609
Maud Lastic, D. Rohmer, G. Cordonnier, C. Jaupart, Fabrice Neyret, Marie-Paule Cani
{"title":"Interactive simulation of plume and pyroclastic volcanic ejections","authors":"Maud Lastic, D. Rohmer, G. Cordonnier, C. Jaupart, Fabrice Neyret, Marie-Paule Cani","doi":"10.1145/3522609","DOIUrl":"https://doi.org/10.1145/3522609","url":null,"abstract":"We propose an interactive animation method for the ejection of gas and ashes mixtures in volcano eruption. Our novel, layered solution combines a coarse-grain, physically-based simulation of the ejection dynamics with a consistent, procedural animation of multi-resolution details. We show that this layered model can be used to capture the two main types of ejection, namely ascending plume columns composed of rapidly rising gas carrying ash which progressively entrains more air, and pyroclastic flows which descend the slopes of the volcano depositing ash, ultimately leading to smaller plumes along their way. We validate the large-scale consistency of our model through comparison with geoscience data, and discuss both real-time visualization and off-line, realistic rendering.","PeriodicalId":74536,"journal":{"name":"Proceedings of the ACM on computer graphics and interactive techniques","volume":" ","pages":"1 - 15"},"PeriodicalIF":0.0,"publicationDate":"2022-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44740332","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}
引用次数: 0
Real-Time Relighting of Human Faces with a Low-Cost Setup 基于低成本设置的人脸实时重光照
Proceedings of the ACM on computer graphics and interactive techniques Pub Date : 2022-05-04 DOI: 10.1145/3522626
Nejc Maček, B. Usta, E. Eisemann, R. Marroquim
{"title":"Real-Time Relighting of Human Faces with a Low-Cost Setup","authors":"Nejc Maček, B. Usta, E. Eisemann, R. Marroquim","doi":"10.1145/3522626","DOIUrl":"https://doi.org/10.1145/3522626","url":null,"abstract":"Video-streaming services usually feature post-processing effects to replace the background. However, these often yield inconsistent lighting. Machine-learning-based relighting methods can address this problem, but, at real-time rates, are restricted to a low resolution and can result in an unrealistic skin appearance. Physically-based rendering techniques require complex skin models that can only be acquired using specialised equipment. Our method is lightweight and uses only a standard smartphone. By correcting imperfections during capture, we extract a convincing physically-based skin model. In combination with suitable acceleration techniques, we achieve real-time rates on commodity hardware.","PeriodicalId":74536,"journal":{"name":"Proceedings of the ACM on computer graphics and interactive techniques","volume":"5 1","pages":"1 - 19"},"PeriodicalIF":0.0,"publicationDate":"2022-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46506994","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}
引用次数: 1
Permutation Coding for Vertex-Blend Attribute Compression 顶点混合属性压缩的置换编码
Proceedings of the ACM on computer graphics and interactive techniques Pub Date : 2022-05-04 DOI: 10.1145/3522607
Christoph Peters, Bastian Kuth, Quirin Meyer
{"title":"Permutation Coding for Vertex-Blend Attribute Compression","authors":"Christoph Peters, Bastian Kuth, Quirin Meyer","doi":"10.1145/3522607","DOIUrl":"https://doi.org/10.1145/3522607","url":null,"abstract":"Compression of vertex attributes is crucial to keep bandwidth requirements in real-time rendering low. We present a method that encodes any given number of blend attributes for skinning at a fixed bit rate while keeping the worst-case error small. Our method exploits that the blend weights are sorted. With this knowledge, no information is lost when the weights get shuffled. Our permutation coding thus encodes additional data, e.g. about bone indices, into the order of the weights. We also transform the weights linearly to ensure full coverage of the representable domain. Through a thorough error analysis, we arrive at a nearly optimal quantization scheme. Our method is fast enough to decode blend attributes in a vertex shader and also to encode them at runtime, e.g. in a compute shader. Our open source implementation supports up to 13 weights in up to 64 bits.","PeriodicalId":74536,"journal":{"name":"Proceedings of the ACM on computer graphics and interactive techniques","volume":"5 1","pages":"1 - 16"},"PeriodicalIF":0.0,"publicationDate":"2022-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41676116","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}
引用次数: 0
Stereo-consistent screen-space ambient occlusion 立体一致的屏幕空间环境遮挡
Proceedings of the ACM on computer graphics and interactive techniques Pub Date : 2022-05-04 DOI: 10.1145/3522614
Pei-Bei Shi, M. Billeter, E. Eisemann
{"title":"Stereo-consistent screen-space ambient occlusion","authors":"Pei-Bei Shi, M. Billeter, E. Eisemann","doi":"10.1145/3522614","DOIUrl":"https://doi.org/10.1145/3522614","url":null,"abstract":"Screen-space ambient occlusion (SSAO) shows high efficiency and is widely used in real-time 3D applications. However, using SSAO algorithms in stereo rendering can lead to inconsistencies due to the differences in the screen-space information captured by the left and right eye. This will affect the perception of the scene and may be a source of viewer discomfort. In this paper, we show that the raw obscurance estimation part and subsequent filtering are both sources of inconsistencies. We developed a screen-space method involving both views in conjunction, leading to a stereo-aware raw obscurance estimation method and a stereo-aware bilateral filter. The results show that our method reduces stereo inconsistencies to a level comparable to geometry-based AO solutions, while maintaining the performance benefits of a screen-space approach.","PeriodicalId":74536,"journal":{"name":"Proceedings of the ACM on computer graphics and interactive techniques","volume":" ","pages":"1 - 12"},"PeriodicalIF":0.0,"publicationDate":"2022-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44285886","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}
引用次数: 4
Interactive Physics-Based Virtual Sculpting with Haptic Feedback 基于触觉反馈的交互式物理虚拟雕刻
Proceedings of the ACM on computer graphics and interactive techniques Pub Date : 2022-05-04 DOI: 10.1145/3522611
Avirup Mandal, P. Chaudhuri, S. Chaudhuri
{"title":"Interactive Physics-Based Virtual Sculpting with Haptic Feedback","authors":"Avirup Mandal, P. Chaudhuri, S. Chaudhuri","doi":"10.1145/3522611","DOIUrl":"https://doi.org/10.1145/3522611","url":null,"abstract":"Sculpting is an art form that relies on both the visual and tactile senses. A faithful simulation of sculpting, therefore, requires interactive, physically accurate haptic and visual feedback. We present an interactive physics-based sculpting framework with faithful haptic feedback. We enable cutting of the material by designing a stable, remeshing-free cutting algorithm called Improved stable eXtended Finite Element Method. We present a simulation framework to enable stable visual and haptic feedback at interactive rates. We evaluate the performance of our framework quantitatively and quantitatively through an extensive user study.","PeriodicalId":74536,"journal":{"name":"Proceedings of the ACM on computer graphics and interactive techniques","volume":"5 1","pages":"1 - 20"},"PeriodicalIF":0.0,"publicationDate":"2022-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47519145","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}
引用次数: 3
Real-Time Ray-Traced Soft Shadows of Environmental Lighting by Conical Ray Culling 锥形消隐法实时跟踪环境光的软阴影
Proceedings of the ACM on computer graphics and interactive techniques Pub Date : 2022-05-04 DOI: 10.1145/3522617
Yang Xu, Yu Jiang, Junbo Zhang, Kang Li, Guohua Geng
{"title":"Real-Time Ray-Traced Soft Shadows of Environmental Lighting by Conical Ray Culling","authors":"Yang Xu, Yu Jiang, Junbo Zhang, Kang Li, Guohua Geng","doi":"10.1145/3522617","DOIUrl":"https://doi.org/10.1145/3522617","url":null,"abstract":"Soft shadows of environmental lighting provide important visual cues in realistic rendering. However, rendering of soft shadows of environmental lighting in real-time is difficult because evaluating the visibility function is challenging. In this work, we present a method to render soft shadows of environmental lighting at real-time frame rates based on hardware-accelerated ray tracing. We assume that the scene contains both static and dynamic objects. To composite the soft shadows cast by dynamic objects with the precomputed lighting of static objects, the incident irradiance occluded by dynamic objects, which is obtained by accumulating the occluded incident radiances over the hemisphere using ray tracing, is subtracted from the precomputed incident irradiance. Conical ray culling is proposed to exclude the rays that cannot intersect dynamic objects, which significantly improves rendering efficiency. Rendering results demonstrate that our proposed method can achieve real-time rendering of soft shadows of environmental lighting cast by dynamic objects.","PeriodicalId":74536,"journal":{"name":"Proceedings of the ACM on computer graphics and interactive techniques","volume":" ","pages":"1 - 15"},"PeriodicalIF":0.0,"publicationDate":"2022-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47924112","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}
引用次数: 1
Real-Time Hair Filtering with Convolutional Neural Networks 基于卷积神经网络的头发实时滤波
Proceedings of the ACM on computer graphics and interactive techniques Pub Date : 2022-05-04 DOI: 10.1145/3522606
Roc R. Currius, Ulf Assarsson, Erik Sintorn
{"title":"Real-Time Hair Filtering with Convolutional Neural Networks","authors":"Roc R. Currius, Ulf Assarsson, Erik Sintorn","doi":"10.1145/3522606","DOIUrl":"https://doi.org/10.1145/3522606","url":null,"abstract":"Rendering of realistic-looking hair is in general still too costly to do in real-time applications, from simulating the physics to rendering the fine details required for it to look natural, including self-shadowing. We show how an autoencoder network, that can be evaluated in real time, can be trained to filter an image of few stochastic samples, including self-shadowing, to produce a much more detailed image that takes into account real hair thickness and transparency.","PeriodicalId":74536,"journal":{"name":"Proceedings of the ACM on computer graphics and interactive techniques","volume":" ","pages":"1 - 15"},"PeriodicalIF":0.0,"publicationDate":"2022-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45316264","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}
引用次数: 1
Rethinking Model-Based Gaze Estimation. 重新思考基于模型的注视估计。
IF 1.4
Proceedings of the ACM on computer graphics and interactive techniques Pub Date : 2022-05-01 Epub Date: 2022-05-17 DOI: 10.1145/3530797
Harsimran Kaur, Swati Jindal, Roberto Manduchi
{"title":"Rethinking Model-Based Gaze Estimation.","authors":"Harsimran Kaur, Swati Jindal, Roberto Manduchi","doi":"10.1145/3530797","DOIUrl":"10.1145/3530797","url":null,"abstract":"<p><p>Over the past several years, a number of data-driven gaze tracking algorithms have been proposed, which have been shown to outperform classic model-based methods in terms of gaze direction accuracy. These algorithms leverage the recent development of sophisticated CNN architectures, as well as the availability of large gaze datasets captured under various conditions. One shortcoming of black-box, end-to-end methods, though, is that any unexpected behaviors are difficult to explain. In addition, there is always the risk that a system trained with a certain dataset may not perform well when tested on data from a different source (the \"domain gap\" problem.) In this work, we propose a novel method to embed eye geometry information in an end-to-end gaze estimation network by means of a \"geometric layer\". Our experimental results show that our system outperforms other state-of-the-art methods in cross-dataset evaluation, while producing competitive performance over within dataset tests. In addition, the proposed system is able to extrapolate gaze angles outside the range of those considered in the training data.</p>","PeriodicalId":74536,"journal":{"name":"Proceedings of the ACM on computer graphics and interactive techniques","volume":"5 2","pages":""},"PeriodicalIF":1.4,"publicationDate":"2022-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9231508/pdf/nihms-1800583.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"40397122","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A Spiral into the Mind 进入心灵的螺旋
Proceedings of the ACM on computer graphics and interactive techniques Pub Date : 2022-04-28 DOI: 10.1145/3530795
Maurice Koch, D. Weiskopf, K. Kurzhals
{"title":"A Spiral into the Mind","authors":"Maurice Koch, D. Weiskopf, K. Kurzhals","doi":"10.1145/3530795","DOIUrl":"https://doi.org/10.1145/3530795","url":null,"abstract":"Comparing mobile eye tracking data from multiple participants without information about areas of interest (AOIs) is challenging because of individual timing and coordinate systems. We present a technique, the gaze spiral, that visualizes individual recordings based on image content of the stimulus. The spiral layout of the slitscan visualization is used to create a compact representation of scanpaths. The visualization provides an overview of multiple recordings even for long time spans and helps identify and annotate recurring patterns within recordings. The gaze spirals can also serve as glyphs that can be projected to 2D space based on established scanpath metrics in order to interpret the metrics and identify groups of similar viewing behavior. We present examples based on two egocentric datasets to demonstrate the effectiveness of our approach for annotation and comparison tasks. Our examples show that the technique has the potential to let users compare even long-term recordings of pervasive scenarios without manual annotation.","PeriodicalId":74536,"journal":{"name":"Proceedings of the ACM on computer graphics and interactive techniques","volume":" ","pages":"1 - 16"},"PeriodicalIF":0.0,"publicationDate":"2022-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42151453","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}
引用次数: 2
Software Rasterization of 2 Billion Points in Real Time 20亿个实时点的软件栅格化
Proceedings of the ACM on computer graphics and interactive techniques Pub Date : 2022-04-04 DOI: 10.1145/3543863
Markus Schütz, B. Kerbl, M. Wimmer
{"title":"Software Rasterization of 2 Billion Points in Real Time","authors":"Markus Schütz, B. Kerbl, M. Wimmer","doi":"10.1145/3543863","DOIUrl":"https://doi.org/10.1145/3543863","url":null,"abstract":"The accelerated collection of detailed real-world 3D data in the form of ever-larger point clouds is sparking a demand for novel visualization techniques that are capable of rendering billions of point primitives in real-time. We propose a software rasterization pipeline for point clouds that is capable of rendering up to two billion points in real-time (60 FPS) on commodity hardware. Improvements over the state of the art are achieved by batching points, enabling a number of batch-level optimizations before rasterizing them within the same rendering pass. These optimizations include frustum culling, level-of-detail (LOD) rendering, and choosing the appropriate coordinate precision for a given batch of points directly within a compute workgroup. Adaptive coordinate precision, in conjunction with visibility buffers, reduces the required data for the majority of points to just four bytes, making our approach several times faster than the bandwidth-limited state of the art. Furthermore, support for LOD rendering makes our software rasterization approach suitable for rendering arbitrarily large point clouds, and to meet the elevated performance demands of virtual reality applications.","PeriodicalId":74536,"journal":{"name":"Proceedings of the ACM on computer graphics and interactive techniques","volume":"5 1","pages":"1 - 17"},"PeriodicalIF":0.0,"publicationDate":"2022-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41687153","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}
引用次数: 15
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