Grass is one of the crucial elements in representing real nature scenes. Various methods have been proposed for grass simulation, for example, Boulanger and his colleagues render realistic grass in real-time with dynamic lighting, shadows and animations. Till now, few approaches have investigated the realistic simulation of withering grassland which is still a big challenge in computer graphics, due to the great complexity of both geometry and withering mechanism. In our work, a novel concept called Time-Varying Texels (TVT) is proposed to extend the static texel[Kajiya and Kay 1989] and make it time-serialized. In a grass TVT structure, time-dependent texels are arranged hierarchically in a Time-Space Partitioning (TSP) tree, so that the grass withering process can be efficiently approximated, with acceptable spatial and temporal errors. In this way we facilitate LOD rendering. Traditional texel structures could hardly undertake physical based calculation in each grass blade, so we introduce a point based structure (PBS) to increase the flexibility. Dynamic processes such as geometric deformation and material transformation can be achieved on PBS during the whole withering procedure. Additionally, by clustering the pre-computed TVT samples in low densities using a mingling algorithm, we obtain high-density grass TVT so as to significantly improve the efficiency of TVT generation.
{"title":"Realistic grass withering simulation using time-varying texels","authors":"Shaohui Jiao, P. Heng, E. Wu","doi":"10.1145/1667146.1667169","DOIUrl":"https://doi.org/10.1145/1667146.1667169","url":null,"abstract":"Grass is one of the crucial elements in representing real nature scenes. Various methods have been proposed for grass simulation, for example, Boulanger and his colleagues render realistic grass in real-time with dynamic lighting, shadows and animations. Till now, few approaches have investigated the realistic simulation of withering grassland which is still a big challenge in computer graphics, due to the great complexity of both geometry and withering mechanism. In our work, a novel concept called Time-Varying Texels (TVT) is proposed to extend the static texel[Kajiya and Kay 1989] and make it time-serialized. In a grass TVT structure, time-dependent texels are arranged hierarchically in a Time-Space Partitioning (TSP) tree, so that the grass withering process can be efficiently approximated, with acceptable spatial and temporal errors. In this way we facilitate LOD rendering. Traditional texel structures could hardly undertake physical based calculation in each grass blade, so we introduce a point based structure (PBS) to increase the flexibility. Dynamic processes such as geometric deformation and material transformation can be achieved on PBS during the whole withering procedure. Additionally, by clustering the pre-computed TVT samples in low densities using a mingling algorithm, we obtain high-density grass TVT so as to significantly improve the efficiency of TVT generation.","PeriodicalId":180587,"journal":{"name":"ACM SIGGRAPH Conference and Exhibition on Computer Graphics and Interactive Techniques in Asia","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125177399","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 this work, I propose a flexible two way coupling method between fluid and deformable bodies using Particle Method, that enable to conserve the momentum of the coupled system to increase the stability and enable to set large size time step. Two way coupling method consider the both effects that is fluid to solid, and solid to fluid simultaneously. To simulate these phenomena, I construct a novel method by expanding the MPS(Moving Particles Semi-Implicit) Method, and present the efficient implementation on GPU to execute at a real time rate.
{"title":"Real time two-way coupling of fluids to deformable bodies using particle method on GPU","authors":"Kazuhiko Yamamoto","doi":"10.1145/1666778.1666788","DOIUrl":"https://doi.org/10.1145/1666778.1666788","url":null,"abstract":"In this work, I propose a flexible two way coupling method between fluid and deformable bodies using Particle Method, that enable to conserve the momentum of the coupled system to increase the stability and enable to set large size time step. Two way coupling method consider the both effects that is fluid to solid, and solid to fluid simultaneously. To simulate these phenomena, I construct a novel method by expanding the MPS(Moving Particles Semi-Implicit) Method, and present the efficient implementation on GPU to execute at a real time rate.","PeriodicalId":180587,"journal":{"name":"ACM SIGGRAPH Conference and Exhibition on Computer Graphics and Interactive Techniques in Asia","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124125038","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}
M. Furukawa, Naohisa Nagaya, Takuji Tokiwa, M. Inami, Atsushi Okoshi, M. Sugimoto, Yuta Sugiura, Yuji Uema
Fur Display makes invisible information visible. It not only delivers dynamic movements of appealing, bushy fur, but it is also a feathery, visual, tactile display that invites touch and interaction. Earlier versions of this concept often used rigid surfaces like tabletops, but Fur Display presents touchable fur with surprising dynamic movement. The device is simple and small, so it can be placed on clothing, appliances, or personal belongings, where it becomes a useful, friendly interface in our daily lives.
{"title":"Fur display","authors":"M. Furukawa, Naohisa Nagaya, Takuji Tokiwa, M. Inami, Atsushi Okoshi, M. Sugimoto, Yuta Sugiura, Yuji Uema","doi":"10.1145/1665137.1665189","DOIUrl":"https://doi.org/10.1145/1665137.1665189","url":null,"abstract":"Fur Display makes invisible information visible. It not only delivers dynamic movements of appealing, bushy fur, but it is also a feathery, visual, tactile display that invites touch and interaction. Earlier versions of this concept often used rigid surfaces like tabletops, but Fur Display presents touchable fur with surprising dynamic movement. The device is simple and small, so it can be placed on clothing, appliances, or personal belongings, where it becomes a useful, friendly interface in our daily lives.","PeriodicalId":180587,"journal":{"name":"ACM SIGGRAPH Conference and Exhibition on Computer Graphics and Interactive Techniques in Asia","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123648605","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}
Seamless cloning algorithm for image and video is an important editing operation. Recently [Farbman et al. 2009] introduced an alternative which exploits the Mean-Value Coordinates (MVC) rather than solving a large linear system to perform a weighted sum of values along the boundary. It demonstrated result as good as that of the earlier techniques in a remarkably short time and ease of implementation. Seamless video object cloning was also discussed in [Farbman et al. 2009], where they used a simple exponential decay of the previous frames. In this paper, we propose an improved MVC algorithm in the two aspects. First, we provide an alternative sampling algorithm which make it possible to handle concave regions that were problematic in [Farbman et al. 2009]. And we propose more effective temporal smoothing method for video cloning than a simple exponential decay method. Our method is not only fast enough to carry out interactive video cloning, but also it can reduce temporally noticeable seams of video.
图像和视频的无缝克隆算法是一项重要的编辑操作。最近[Farbman et al. 2009]介绍了一种替代方法，它利用均值坐标(MVC)，而不是求解一个大型线性系统来执行沿边界的加权值和。它在非常短的时间内证明了与早期技术一样好的结果，并且易于实现。无缝视频对象克隆也在[Farbman et al. 2009]中进行了讨论，他们使用了先前帧的简单指数衰减。本文从两个方面提出了一种改进的MVC算法。首先，我们提供了一种替代采样算法，可以处理在[Farbman et al. 2009]中存在问题的凹区域。我们提出了一种比简单的指数衰减方法更有效的视频克隆时间平滑方法。我们的方法不仅可以快速地进行交互式视频克隆，而且可以减少视频暂时明显的接缝。
{"title":"Improved coordinate-based image and video cloning algorithm","authors":"Sun-Young Lee, In-Kwon Lee","doi":"10.1145/1666778.1666826","DOIUrl":"https://doi.org/10.1145/1666778.1666826","url":null,"abstract":"Seamless cloning algorithm for image and video is an important editing operation. Recently [Farbman et al. 2009] introduced an alternative which exploits the Mean-Value Coordinates (MVC) rather than solving a large linear system to perform a weighted sum of values along the boundary. It demonstrated result as good as that of the earlier techniques in a remarkably short time and ease of implementation. Seamless video object cloning was also discussed in [Farbman et al. 2009], where they used a simple exponential decay of the previous frames. In this paper, we propose an improved MVC algorithm in the two aspects. First, we provide an alternative sampling algorithm which make it possible to handle concave regions that were problematic in [Farbman et al. 2009]. And we propose more effective temporal smoothing method for video cloning than a simple exponential decay method. Our method is not only fast enough to carry out interactive video cloning, but also it can reduce temporally noticeable seams of video.","PeriodicalId":180587,"journal":{"name":"ACM SIGGRAPH Conference and Exhibition on Computer Graphics and Interactive Techniques in Asia","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128381534","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}
An epic journey of letters across the country creates a copy of the Hollywood sign in Los Angeles. The spot was created to launch Orange's VOD service through its web site and cellular phones. Letters and other elements were created in 3D. The background was created in matte paintings on plates shot in South Africa.
{"title":"Orange Hollywood","authors":"E. Sverdlov, Ilan Bouni","doi":"10.1145/1665208.1665259","DOIUrl":"https://doi.org/10.1145/1665208.1665259","url":null,"abstract":"An epic journey of letters across the country creates a copy of the Hollywood sign in Los Angeles. The spot was created to launch Orange's VOD service through its web site and cellular phones. Letters and other elements were created in 3D. The background was created in matte paintings on plates shot in South Africa.","PeriodicalId":180587,"journal":{"name":"ACM SIGGRAPH Conference and Exhibition on Computer Graphics and Interactive Techniques in Asia","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129996476","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}
This paper presents a new structured light pattern generation technique, which allows acquisition of scene geometry from a single image, under various projection conditions with relatively high acquisition density. We construct the pattern by using the geometrical constraints of the projector-camera system, and solve the correspondence problem based on the local connectivity of the feature points and edges of the projection pattern. This method is robust from image processing perspective, and allows rapid geometry scanning using a mobile projector-camera system.
{"title":"A robust and dynamic scene geometry acquisition technique for a mobile projector-camera system","authors":"Vinh Ninh Dao, Masanori Sugimoto","doi":"10.1145/1667146.1667180","DOIUrl":"https://doi.org/10.1145/1667146.1667180","url":null,"abstract":"This paper presents a new structured light pattern generation technique, which allows acquisition of scene geometry from a single image, under various projection conditions with relatively high acquisition density. We construct the pattern by using the geometrical constraints of the projector-camera system, and solve the correspondence problem based on the local connectivity of the feature points and edges of the projection pattern. This method is robust from image processing perspective, and allows rapid geometry scanning using a mobile projector-camera system.","PeriodicalId":180587,"journal":{"name":"ACM SIGGRAPH Conference and Exhibition on Computer Graphics and Interactive Techniques in Asia","volume":"165 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134432269","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}
"Tuvalu Visualization Project" is an artistic visualization using Google Earth. This project is composed of two elements: Visualization and communication system "Build the Future with 10,000 Tuvaluan" for NPO Tuvalu Overview, and "Tuvalu Mapping" that is constructed of 3300 photographs. The purpose of this project is disclosing actual information about "People" and "Scenery" in Tuvalu to the world. It is said that global warming is exposing Tuvalu to the sea level rising. However, we suppose that it is important to understand not only the problem of global warming, but also the real situation of Tuvalu. The Internet is an effective tool for collecting information, but before it was difficult to obtain information of the real situation of Tuvalu on the Internet. Therefore, we produced this project to present the realities of "People" and "Scenery" of Tuvalu, to increase interest in Tuvalu, and to receive feedback from all over the world.
{"title":"Tuvalu Visualization Project","authors":"Makiko Suzuki, Yuichi Watanabe, Hidenori Watanave, Shuichi Endo","doi":"10.1145/1667146.1667178","DOIUrl":"https://doi.org/10.1145/1667146.1667178","url":null,"abstract":"\"Tuvalu Visualization Project\" is an artistic visualization using Google Earth. This project is composed of two elements: Visualization and communication system \"Build the Future with 10,000 Tuvaluan\" for NPO Tuvalu Overview, and \"Tuvalu Mapping\" that is constructed of 3300 photographs. The purpose of this project is disclosing actual information about \"People\" and \"Scenery\" in Tuvalu to the world. It is said that global warming is exposing Tuvalu to the sea level rising. However, we suppose that it is important to understand not only the problem of global warming, but also the real situation of Tuvalu. The Internet is an effective tool for collecting information, but before it was difficult to obtain information of the real situation of Tuvalu on the Internet. Therefore, we produced this project to present the realities of \"People\" and \"Scenery\" of Tuvalu, to increase interest in Tuvalu, and to receive feedback from all over the world.","PeriodicalId":180587,"journal":{"name":"ACM SIGGRAPH Conference and Exhibition on Computer Graphics and Interactive Techniques in Asia","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133598047","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}
Swan Lake performed by water drops on a lake in the middle of the night. Where are they from? Princess Odette, who magically turned into a white swan, changes into a woman in the moonlight. When Prince Siegfried sees Odette among the swans in the lake, he falls in love with her. However, Odile, a black swan, tries to pull the lovers apart, and Odette is about to fall over a precipice.
{"title":"Burning stage","authors":"Sunwoo Yang","doi":"10.1145/1665208.1665240","DOIUrl":"https://doi.org/10.1145/1665208.1665240","url":null,"abstract":"Swan Lake performed by water drops on a lake in the middle of the night. Where are they from? Princess Odette, who magically turned into a white swan, changes into a woman in the moonlight. When Prince Siegfried sees Odette among the swans in the lake, he falls in love with her. However, Odile, a black swan, tries to pull the lovers apart, and Odette is about to fall over a precipice.","PeriodicalId":180587,"journal":{"name":"ACM SIGGRAPH Conference and Exhibition on Computer Graphics and Interactive Techniques in Asia","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132703516","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. Rahardja, F. Farbiz, C. Manders, Zhiyong Huang, Jamie Ng, I. R. Khan, E. Ong, Peng Song
The human visual system (HVS) uses several methods to interactively adapt to the incredible real-world range of light intensities, continually changing to effectively perceive visual information. Eye HDR is a new approach to the problem of displaying high-dynamic-range (HDR) content on low-dynamic-range displays. Instead of creating a single static image, it uses a dynamic display system to naturally, interactively adapt to the user's view, just as the HVS changes depending on the environment.
{"title":"Eye HDR: gaze-adaptive system for displaying high-dynamic-range images","authors":"S. Rahardja, F. Farbiz, C. Manders, Zhiyong Huang, Jamie Ng, I. R. Khan, E. Ong, Peng Song","doi":"10.1145/1665137.1665187","DOIUrl":"https://doi.org/10.1145/1665137.1665187","url":null,"abstract":"The human visual system (HVS) uses several methods to interactively adapt to the incredible real-world range of light intensities, continually changing to effectively perceive visual information. Eye HDR is a new approach to the problem of displaying high-dynamic-range (HDR) content on low-dynamic-range displays. Instead of creating a single static image, it uses a dynamic display system to naturally, interactively adapt to the user's view, just as the HVS changes depending on the environment.","PeriodicalId":180587,"journal":{"name":"ACM SIGGRAPH Conference and Exhibition on Computer Graphics and Interactive Techniques in Asia","volume":"232 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114344953","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}
Y. Toh, D. Kang, Jihong Jeung, Younghwan Pan, Seul Ye Bhang, Song Yee Baik, Soo A. Park, Ji Yong Kim, M. Chang, Kang Min Kim
Brochure is a small, printed advertisement leaflet containing service, product, map or/and cultural information. Back in 1993, the environmental tourism consultant Green Flag International reported that more than 40 million holiday brochures were thrown away unread [The Independent Travel 1993]. Till date, the most worrying aspect of the brochure industry is still the continuing treatment of its product as a 'free good', which eventually turns out to be paper waste. It is undeniable that paper can be recycled, but however, recycling is not as environmentally sustainable as reuse [Blevis 2008]. During touring activity, each brochure paper is used only once and it usually lasts throughout the touring period. Furthermore, an ordinary brochure paper can easily be torn or got wet especially during rainy days and becomes fragile. Considering the above downsides of using an ordinary brochure paper, we study and explore the sustainability use of flexible transparent display to blend various brochure aspects seamlessly into touring activity and subsequently design an interactive eco-friendly brochure for cultural heritage touring activity, called Green-i.
宣传册是一种小型的印刷广告单张，内容包括服务、产品、地图或/和文化信息。早在1993年，环境旅游咨询公司绿旗国际(Green Flag International)就报告说，有超过4000万份未读的度假手册被扔掉了。到目前为止，宣传册行业最令人担忧的方面仍然是继续将其产品视为“免费商品”，最终结果是纸张浪费。不可否认，纸张是可以回收利用的，但是，回收利用并不像再利用那样具有环境可持续性[Blevis 2008]。在旅游活动中，每张宣传册只使用一次，通常在整个旅游期间使用。此外，普通的宣传册纸很容易被撕破或弄湿，特别是在雨天，变得易碎。考虑到使用普通宣传册纸张的上述缺点，我们研究和探索了柔性透明展示的可持续性使用，将宣传册的各个方面无缝地融入到旅游活动中，并随后设计了一种交互式的环保文化遗产旅游宣传册，称为Green-i。
{"title":"Green-i: an interactive reusable brochure paper for eco-touring","authors":"Y. Toh, D. Kang, Jihong Jeung, Younghwan Pan, Seul Ye Bhang, Song Yee Baik, Soo A. Park, Ji Yong Kim, M. Chang, Kang Min Kim","doi":"10.1145/1666778.1666782","DOIUrl":"https://doi.org/10.1145/1666778.1666782","url":null,"abstract":"Brochure is a small, printed advertisement leaflet containing service, product, map or/and cultural information. Back in 1993, the environmental tourism consultant Green Flag International reported that more than 40 million holiday brochures were thrown away unread [The Independent Travel 1993]. Till date, the most worrying aspect of the brochure industry is still the continuing treatment of its product as a 'free good', which eventually turns out to be paper waste. It is undeniable that paper can be recycled, but however, recycling is not as environmentally sustainable as reuse [Blevis 2008]. During touring activity, each brochure paper is used only once and it usually lasts throughout the touring period. Furthermore, an ordinary brochure paper can easily be torn or got wet especially during rainy days and becomes fragile. Considering the above downsides of using an ordinary brochure paper, we study and explore the sustainability use of flexible transparent display to blend various brochure aspects seamlessly into touring activity and subsequently design an interactive eco-friendly brochure for cultural heritage touring activity, called Green-i.","PeriodicalId":180587,"journal":{"name":"ACM SIGGRAPH Conference and Exhibition on Computer Graphics and Interactive Techniques in Asia","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128404649","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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