Intensive research regarding shape changing interfaces using novel stimuli-responsive materials have been conducted for the past few years. In this report, we propose to use an integrated system called xPrint platform to seamlessly combine digital design with prototype fabrication for producing shape changing interfaces. This platform with pre-programming transformation interfaces design is applicable for micron-level deposition of a wide range of materials regardless of its viscosity and other physical properties, and it provides features including high-throughput, improved accuracy, and high flexibility.
{"title":"xPrint: from design to fabrication for shape changing interfaces by printing solution materials","authors":"Guanyun Wang, Lining Yao, Wen Wang, Jifei Ou, Chin-Yi Cheng, H. Ishii","doi":"10.1145/2820926.2820944","DOIUrl":"https://doi.org/10.1145/2820926.2820944","url":null,"abstract":"Intensive research regarding shape changing interfaces using novel stimuli-responsive materials have been conducted for the past few years. In this report, we propose to use an integrated system called xPrint platform to seamlessly combine digital design with prototype fabrication for producing shape changing interfaces. This platform with pre-programming transformation interfaces design is applicable for micron-level deposition of a wide range of materials regardless of its viscosity and other physical properties, and it provides features including high-throughput, improved accuracy, and high flexibility.","PeriodicalId":432851,"journal":{"name":"SIGGRAPH Asia 2015 Posters","volume":"193 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115629058","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}
We define "BITAIKA" as a self-posture adjustment system while sitting in order to correct a posture. We developed BITAIKA with visual feedback as a first step and found out it may be effective to correct a user's posture with visual assistance [Ishimatsu and Ueoka 2014]. However in order to correct its posture by refining its muscle structure, it is necessary to use it for long term. In that sense, it is not sure if visual feedback is adequate because we usually do computer or paper work while sitting and as we concentrate on the work we easily ignore the notification action from the system. So in order to find the right feedback for BITAIKA, we implemented a system to give stimuli to a user's back to notify the timing to correct its posture. We conducted the experiment to compare the effectiveness between visual and back-stimuli feedback.
{"title":"Finding the right feedback for self-posture adjustment system for \"BITAIKA\"","authors":"Haruna Ishimatsu, Ryoko Ueoka","doi":"10.1145/2820926.2820972","DOIUrl":"https://doi.org/10.1145/2820926.2820972","url":null,"abstract":"We define \"BITAIKA\" as a self-posture adjustment system while sitting in order to correct a posture. We developed BITAIKA with visual feedback as a first step and found out it may be effective to correct a user's posture with visual assistance [Ishimatsu and Ueoka 2014]. However in order to correct its posture by refining its muscle structure, it is necessary to use it for long term. In that sense, it is not sure if visual feedback is adequate because we usually do computer or paper work while sitting and as we concentrate on the work we easily ignore the notification action from the system. So in order to find the right feedback for BITAIKA, we implemented a system to give stimuli to a user's back to notify the timing to correct its posture. We conducted the experiment to compare the effectiveness between visual and back-stimuli feedback.","PeriodicalId":432851,"journal":{"name":"SIGGRAPH Asia 2015 Posters","volume":"31 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114021234","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 novel visual markers for dynamic SAR, which are directly embedded on a 3D projection object printed out from a digital fabrication machine, in particular, full-color 3D printer. Since the markers are automatically embedded on a projection surface with mechanical accuracy, precise geometric registration is achieved(Figure 2). However, the shape of markers printed on a nonplanar surface is possibly deformed, which potentially decreases the performance of vision-based marker recognition. In addition, the marker itself is visually salient, and consequently, disturbs a user's sense of immersion. To solve the former issue, we apply a marker whose shape is topologically robust when being deformed. For the latter issue, we carefully decide the reflectance of the marker so that it can be visually diminished by projection while being detectable by cameras. We also proposed a novel marker placement method, which decides the positions of markers so that the position/pose of the object is accurately estimated from various viewpoints.
{"title":"Diminishable visual markers on fabricated projection object for dynamic spatial augmented reality","authors":"Hirotaka Asayama, D. Iwai, Kosuke Sato","doi":"10.1145/2820926.2820952","DOIUrl":"https://doi.org/10.1145/2820926.2820952","url":null,"abstract":"This paper presents a novel visual markers for dynamic SAR, which are directly embedded on a 3D projection object printed out from a digital fabrication machine, in particular, full-color 3D printer. Since the markers are automatically embedded on a projection surface with mechanical accuracy, precise geometric registration is achieved(Figure 2). However, the shape of markers printed on a nonplanar surface is possibly deformed, which potentially decreases the performance of vision-based marker recognition. In addition, the marker itself is visually salient, and consequently, disturbs a user's sense of immersion. To solve the former issue, we apply a marker whose shape is topologically robust when being deformed. For the latter issue, we carefully decide the reflectance of the marker so that it can be visually diminished by projection while being detectable by cameras. We also proposed a novel marker placement method, which decides the positions of markers so that the position/pose of the object is accurately estimated from various viewpoints.","PeriodicalId":432851,"journal":{"name":"SIGGRAPH Asia 2015 Posters","volume":"111 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114360752","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 most motion capture systems by multi-view cameras, fixed cameras have been used. Then, the range of observation, which is a common field of views from a lot of cameras, is narrow in general. Allowing the cameras to be mobile, it expects a wide range of observation but needs to know pose of cameras anytime. We propose a novel calibration technique for a mobile camera, where an image from mobile camera matches with a panoramic background image. Once the cameras are calibrated, fitting a human body model to multi-view images and tracking the body establish a wide-range motion capture system.
{"title":"Wide-range motion capture from panning multi-view cameras","authors":"D. Kobayashi, Masanobu Yamamoto","doi":"10.1145/2820926.2820949","DOIUrl":"https://doi.org/10.1145/2820926.2820949","url":null,"abstract":"In most motion capture systems by multi-view cameras, fixed cameras have been used. Then, the range of observation, which is a common field of views from a lot of cameras, is narrow in general. Allowing the cameras to be mobile, it expects a wide range of observation but needs to know pose of cameras anytime. We propose a novel calibration technique for a mobile camera, where an image from mobile camera matches with a panoramic background image. Once the cameras are calibrated, fitting a human body model to multi-view images and tracking the body establish a wide-range motion capture system.","PeriodicalId":432851,"journal":{"name":"SIGGRAPH Asia 2015 Posters","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124989836","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}
We improve on the widely used color palette technique in the context of anime-style rendering. We introduce an event--driven method to dynamically change color rendition in such rendering scenarios. Changes can happen over time or over space and are triggered by pre-defined events. Such events cause the selection of a particular color palette and node--based "strategy trees" help artists to plan and to visualize resulting look changes interactively. As an optimization, we rely on dynamic shading language code generation to prepare colors before rendering, avoiding the limits of render--time methods.
{"title":"Space-time varying color palettes","authors":"Bo Zhou, Paolo Berto Durante","doi":"10.1145/2820926.2820930","DOIUrl":"https://doi.org/10.1145/2820926.2820930","url":null,"abstract":"We improve on the widely used color palette technique in the context of anime-style rendering. We introduce an event--driven method to dynamically change color rendition in such rendering scenarios. Changes can happen over time or over space and are triggered by pre-defined events. Such events cause the selection of a particular color palette and node--based \"strategy trees\" help artists to plan and to visualize resulting look changes interactively. As an optimization, we rely on dynamic shading language code generation to prepare colors before rendering, avoiding the limits of render--time methods.","PeriodicalId":432851,"journal":{"name":"SIGGRAPH Asia 2015 Posters","volume":"os-14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127764333","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}
Naoya Makibuchi, Tatsuya Kobayashi, H. Kato, H. Yanagihara
Work support systems are expected to be able to help anyone to complete operations without special skills, which is particularly significant for tasks in emergencies. Augmented reality (AR) allows on-site workers to understand operational procedures visually and instantly. However, conventional work support AR systems are problematic in work efficiency or can only be applied to routine tasks. For such systems, emergency situations are the most difficult to deal with. The contribution of this paper is to propose a system that meets all the requirements for supporting tasks in emergencies as shown in Table 1.
{"title":"Remote instruction system using see-through augmented reality","authors":"Naoya Makibuchi, Tatsuya Kobayashi, H. Kato, H. Yanagihara","doi":"10.1145/2820926.2820938","DOIUrl":"https://doi.org/10.1145/2820926.2820938","url":null,"abstract":"Work support systems are expected to be able to help anyone to complete operations without special skills, which is particularly significant for tasks in emergencies. Augmented reality (AR) allows on-site workers to understand operational procedures visually and instantly. However, conventional work support AR systems are problematic in work efficiency or can only be applied to routine tasks. For such systems, emergency situations are the most difficult to deal with. The contribution of this paper is to propose a system that meets all the requirements for supporting tasks in emergencies as shown in Table 1.","PeriodicalId":432851,"journal":{"name":"SIGGRAPH Asia 2015 Posters","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125275252","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}
Camera calibration patterns and fiducial markers are basic technique for 3D measurement to create Computer Graphics (CG) and Augmented Reality (AR). A checkerboard is widely used as a calibration pattern and a circle or ring grid provides higher precision [Datta et al. 2009], and matrix codes are common as AR markers.
相机校准模式和基准标记是创建计算机图形学(CG)和增强现实(AR)的3D测量的基本技术。棋盘被广泛用作校准模式，圆形或环形网格提供更高的精度[Datta et al. 2009]，矩阵代码通常用作AR标记。
{"title":"Circle grid fractal pattern for calibration at different camera zoom levels","authors":"Tomohiro Sueishi, M. Ishikawa","doi":"10.1145/2820926.2820973","DOIUrl":"https://doi.org/10.1145/2820926.2820973","url":null,"abstract":"Camera calibration patterns and fiducial markers are basic technique for 3D measurement to create Computer Graphics (CG) and Augmented Reality (AR). A checkerboard is widely used as a calibration pattern and a circle or ring grid provides higher precision [Datta et al. 2009], and matrix codes are common as AR markers.","PeriodicalId":432851,"journal":{"name":"SIGGRAPH Asia 2015 Posters","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114414955","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}
T. Miura, Takaaki Kaiga, T. Shibata, Hiroaki Katsura, K. Tajima, H. Tamamoto
In Akita Prefecture located in the northeast region of Japan, many attractive folk dances have been passed down. However, several dances were lost due to the falling birthrate and depopulation of rural areas. This study proposes a method to obtain the information contributing to the restoration of the lost folk dances. Specifically, we estimate the motion style of lost Bon Odori dances (Bon Odori: a type of Japanese folk dance), using the investigation data of folk customs and the motion capture data of extant dances.
{"title":"A motion style estimator for lost folk dances in Akita prefecture, Japan","authors":"T. Miura, Takaaki Kaiga, T. Shibata, Hiroaki Katsura, K. Tajima, H. Tamamoto","doi":"10.1145/2820926.2820941","DOIUrl":"https://doi.org/10.1145/2820926.2820941","url":null,"abstract":"In Akita Prefecture located in the northeast region of Japan, many attractive folk dances have been passed down. However, several dances were lost due to the falling birthrate and depopulation of rural areas. This study proposes a method to obtain the information contributing to the restoration of the lost folk dances. Specifically, we estimate the motion style of lost Bon Odori dances (Bon Odori: a type of Japanese folk dance), using the investigation data of folk customs and the motion capture data of extant dances.","PeriodicalId":432851,"journal":{"name":"SIGGRAPH Asia 2015 Posters","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115510437","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}
Physically-based realistic simulation of cloth and fluid are both important research areas in Computer Graphics. There is significant research of fluids interacting with porous materials in applied physics. However, only a few research studies have been conducted for the dynamics of liquid transportation between porous materials with wetting effects. [Huber, et al. 2014] presented a two-way coupling method between fluid and infinitesimally thin cloth. However, their approach cannot handle porous solids or oversaturated piece. [Patkar and Chaudhuri 2013] proposed a three-stage method to support liquid diffusion in volumetric objects. However, fluid transport between porous materials which is tightly close to each other was not considered.
基于物理的布料和流体的逼真模拟都是计算机图形学的重要研究领域。流体与多孔材料的相互作用是应用物理研究的重要内容。然而，对于具有润湿效应的多孔材料间液体输运动力学的研究很少。[Huber, et al. 2014]提出了流体与无穷小薄布之间的双向耦合方法。然而，他们的方法不能处理多孔固体或过饱和块。[Patkar and Chaudhuri 2013]提出了一种支持液体在体积物体中扩散的三阶段方法。然而，没有考虑彼此紧密靠近的多孔材料之间的流体输运。
{"title":"Fluid transport in and between porous materials","authors":"Xin Shi, Shuangjiu Xiao","doi":"10.1145/2820926.2820958","DOIUrl":"https://doi.org/10.1145/2820926.2820958","url":null,"abstract":"Physically-based realistic simulation of cloth and fluid are both important research areas in Computer Graphics. There is significant research of fluids interacting with porous materials in applied physics. However, only a few research studies have been conducted for the dynamics of liquid transportation between porous materials with wetting effects. [Huber, et al. 2014] presented a two-way coupling method between fluid and infinitesimally thin cloth. However, their approach cannot handle porous solids or oversaturated piece. [Patkar and Chaudhuri 2013] proposed a three-stage method to support liquid diffusion in volumetric objects. However, fluid transport between porous materials which is tightly close to each other was not considered.","PeriodicalId":432851,"journal":{"name":"SIGGRAPH Asia 2015 Posters","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116871164","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}
T. Kakue, Takashi Nishitsuji, Tetsuya Kawashima, T. Shimobaba, T. Ito
Aerial projection is a remarkable and promising technique for a lot of fields such as digital signage, amusement, entertainment, business scene, and so on. This is because floating images by aerial projection system can attract viewers. In particular, floating 3D motion pictures make impressions on viewers. Although there are many techniques to project floating 3D motion pictures, they require multiple projectors or mechanical rotating and scanning processing to project floating 3D images. Then we proposed and demonstrated an aerial projection system based on electroholography which can reconstruct 3D images without multiple projectors and mechanical processing [Kakue et al. 2015]. Although we achieved real-time reconstruction of 3D images in previous study, we only focused on acceleration of calculation. In this work, we aim to realize interactive reconstruction of floating 3D motion pictures by the electro-holographic display.
空中投影技术在数字标牌、娱乐、娱乐、商业场景等诸多领域都是一项引人注目且前景广阔的技术。这是因为空中投影系统的浮动影像能够吸引观众。特别是漂浮的3D电影给观众留下了深刻的印象。虽然有许多技术可以投射漂浮的3D运动图像，但它们需要多台投影机或机械旋转和扫描处理才能投射漂浮的3D图像。然后，我们提出并演示了一种基于电全息术的空中投影系统，该系统可以在不需要多个投影机和机械处理的情况下重建3D图像[Kakue et al. 2015]。虽然我们在之前的研究中实现了三维图像的实时重建，但我们只关注计算的加速。在这项工作中，我们的目标是通过电子全息显示器实现浮动3D运动图像的交互式重建。
{"title":"Real-time electro-holography with parabolic mirrors for projecting floating 3D motion pictures","authors":"T. Kakue, Takashi Nishitsuji, Tetsuya Kawashima, T. Shimobaba, T. Ito","doi":"10.1145/2820926.2820968","DOIUrl":"https://doi.org/10.1145/2820926.2820968","url":null,"abstract":"Aerial projection is a remarkable and promising technique for a lot of fields such as digital signage, amusement, entertainment, business scene, and so on. This is because floating images by aerial projection system can attract viewers. In particular, floating 3D motion pictures make impressions on viewers. Although there are many techniques to project floating 3D motion pictures, they require multiple projectors or mechanical rotating and scanning processing to project floating 3D images. Then we proposed and demonstrated an aerial projection system based on electroholography which can reconstruct 3D images without multiple projectors and mechanical processing [Kakue et al. 2015]. Although we achieved real-time reconstruction of 3D images in previous study, we only focused on acceleration of calculation. In this work, we aim to realize interactive reconstruction of floating 3D motion pictures by the electro-holographic display.","PeriodicalId":432851,"journal":{"name":"SIGGRAPH Asia 2015 Posters","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125714019","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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