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Reconfigurable three-dimensional prototype system using digital materials 使用数字材料的可重构三维原型系统
ACM SIGGRAPH 2015 Posters Pub Date : 2015-07-31 DOI: 10.1145/2787626.2792657
Keita Sekijima, Hiroya Tanaka
{"title":"Reconfigurable three-dimensional prototype system using digital materials","authors":"Keita Sekijima, Hiroya Tanaka","doi":"10.1145/2787626.2792657","DOIUrl":"https://doi.org/10.1145/2787626.2792657","url":null,"abstract":"Digital materials are discrete elements such as LEGO Blocks that it can be a kind of reconfigurable 3D matters. There are two advantages of using digital material rather than a continuous material. Firstly, it is easy to change the form after shaping by assembling and disassembling the elements. Secondly, There is never that the error of the part impacts the whole form in the shaping because the elements can be connected exactly by the joint system. There are many researches of digital material focus on the modular connection by press fitting or bonding. Such a digital material can't be assembled and disassembled smoothly after shaped. In our research, we designed the digital material \"Kelvin Block\" (figure 1a) that specialized in smoothly reconfiguring, and we developed the machine \"3D Assembler\" (figure 1b) to arrange Kelvin Blocks automatically. The size of Kelvin Block is 40mmx40mmx40mm that is optimized to the volume of the joint system.","PeriodicalId":269034,"journal":{"name":"ACM SIGGRAPH 2015 Posters","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127976057","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: 5
Reassembling 3D thin shells using integrated template guidance and fracture region matching 利用集成模板导向和裂缝区域匹配技术重组三维薄壳
ACM SIGGRAPH 2015 Posters Pub Date : 2015-07-31 DOI: 10.1145/2787626.2792659
Kang Zhang, Wuyi Yu, Mary Manhein, W. Waggenspack, Xin Li
{"title":"Reassembling 3D thin shells using integrated template guidance and fracture region matching","authors":"Kang Zhang, Wuyi Yu, Mary Manhein, W. Waggenspack, Xin Li","doi":"10.1145/2787626.2792659","DOIUrl":"https://doi.org/10.1145/2787626.2792659","url":null,"abstract":"Geometric restoration that composes 3D fragmented pieces into the original complete object is an important computer graphics and geometric processing problem. Automatic and effective restoration has applications in many fields such as archeological reconstruction, digital heritage archiving, forensic evidence processing, to name a few. For example, archaeologists reconstruct ceramic fragments (sherds) into complete pots in order to analyze the information of the ancient society. Forensic scientists reassemble skull fragments into complete skull for face reconstruction and body identification. In both of these problems we need to solve a composition of digitized thin-shell fragments with different shapes, sizes, and resolutions. This problem remains very challenging.","PeriodicalId":269034,"journal":{"name":"ACM SIGGRAPH 2015 Posters","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115547535","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: 6
Critical points with discrete Morse theory 离散莫尔斯理论的临界点
ACM SIGGRAPH 2015 Posters Pub Date : 2015-07-31 DOI: 10.1145/2787626.2792614
Peihong Guo, E. Akleman, Ying He, Xiaoning Wang, W. Liu
{"title":"Critical points with discrete Morse theory","authors":"Peihong Guo, E. Akleman, Ying He, Xiaoning Wang, W. Liu","doi":"10.1145/2787626.2792614","DOIUrl":"https://doi.org/10.1145/2787626.2792614","url":null,"abstract":"In this work, we present some of the unexpected observations resulted from our recent research. We, recently, needed to identify a small number of important critical points, i.e. minimum, maximum and saddle points, on a given manifold mesh surface. All critical points on a manifold triangular mesh can be identified using discrete Gaussian curvature, which is given as ki = 2π − Σj θi,j where ki is vertex defect (the discrete Gaussian curvature) of the vertex i and θi,j is the corner of the vertex in the triangle j. A very useful property coming with vertex defect is the discrete version of Gauss-Bonnet theorem: the sum of all vertex defects is always constant as Σi ki = 2π(2−2g) where g is the genus of the mesh. Any vertex with a non-zero vertex defect is really an critical point of the surface. However, identification of interesting critical points is hard with vertex defect alone. As it can be seen in Figure 1(a), even we ignore vertex defects that are small, too many vertices are still chosen and this information is not really useful to make any conclusion of the shape of the surface.","PeriodicalId":269034,"journal":{"name":"ACM SIGGRAPH 2015 Posters","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122521545","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
MR coral sea evolved: mixed reality aquarium with physical MR displays MR珊瑚海进化:混合现实水族馆与物理MR显示
ACM SIGGRAPH 2015 Posters Pub Date : 2015-07-31 DOI: 10.1145/2787626.2792619
Toshikazu Ohshima, Shun Kawaguchi, Yuma Tanaka
{"title":"MR coral sea evolved: mixed reality aquarium with physical MR displays","authors":"Toshikazu Ohshima, Shun Kawaguchi, Yuma Tanaka","doi":"10.1145/2787626.2792619","DOIUrl":"https://doi.org/10.1145/2787626.2792619","url":null,"abstract":"The MR Coral Sea is a mixed reality tiny aquarium. The intent of the system is to play with little virtual fish. A player can interact with the virtual fish via Coral Display, an interactive device with multisensory physical feedback. When a player presents his or her hand above the device, fish bait appears on the palm, and the virtual fish come to eat it. The device provides the user with a feeling of spatial existence through illumination and vibration.","PeriodicalId":269034,"journal":{"name":"ACM SIGGRAPH 2015 Posters","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124962497","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
OpaqueLusion: opaque mid-air images using dynamic mask for occlusion expression OpaqueLusion:不透明的半空中图像，使用动态遮罩遮挡表达
ACM SIGGRAPH 2015 Posters Pub Date : 2015-07-31 DOI: 10.1145/2787626.2787639
H. Kajita, Naoya Koizumi, T. Naemura
{"title":"OpaqueLusion: opaque mid-air images using dynamic mask for occlusion expression","authors":"H. Kajita, Naoya Koizumi, T. Naemura","doi":"10.1145/2787626.2787639","DOIUrl":"https://doi.org/10.1145/2787626.2787639","url":null,"abstract":"Mid-air imaging has the advantage of expression along the depth direction. For example, MARIO [1], a mid-air display, can form an image in the depth range of 30 cm by physically moving the light source display. Multi-layered mid-air images can be displayed at various depths, but such multi-layered images are transparent and experience color mixture due to the addition of light from the light source displays. It is difficult to see the front of transparent images because they have no occlusion expression.","PeriodicalId":269034,"journal":{"name":"ACM SIGGRAPH 2015 Posters","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127402550","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
PaperPulse: an integrated approach for embedding electronics in paper designs PaperPulse:一个集成的方法嵌入电子在纸上的设计
ACM SIGGRAPH 2015 Posters Pub Date : 2015-07-31 DOI: 10.1145/2787626.2792650
Raf Ramakers, Kashyap Todi, K. Luyten
{"title":"PaperPulse: an integrated approach for embedding electronics in paper designs","authors":"Raf Ramakers, Kashyap Todi, K. Luyten","doi":"10.1145/2787626.2792650","DOIUrl":"https://doi.org/10.1145/2787626.2792650","url":null,"abstract":"We present PaperPulse, a design and fabrication approach that enables designers without a technical background to produce standalone interactive paper artifacts by augmenting them with electronics. With PaperPulse designers overlay pre-designed visual elements with interactive widgets and specify functional relations between them using a logic demonstration and recording approach, called Pulsation. When the design is finished, PaperPulse generates layered electronic circuit designs, code that can be deployed on a microcontroller, and instructions for assembly.","PeriodicalId":269034,"journal":{"name":"ACM SIGGRAPH 2015 Posters","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125920891","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: 62
Mouth gesture based emotion awareness and interaction in virtual reality 虚拟现实中基于手势的情感感知与交互
ACM SIGGRAPH 2015 Posters Pub Date : 2015-07-31 DOI: 10.1145/2787626.2787635
Xing Zhang, U. Ciftci, L. Yin
{"title":"Mouth gesture based emotion awareness and interaction in virtual reality","authors":"Xing Zhang, U. Ciftci, L. Yin","doi":"10.1145/2787626.2787635","DOIUrl":"https://doi.org/10.1145/2787626.2787635","url":null,"abstract":"In recent years, Virtual Reality (VR) has become a new media to provide users an immersive experience. Events happening in the VR connect closer to our emotions as compared to other interfaces. The emotion variations are reflected as our facial expressions. However, the current VR systems concentrate on \"giving\" information to the user, yet ignore \"receiving\" emotional status from the user, while this information definitely contributes to the media content rating and the user experience. On the other hand, traditional controllers become difficult to use due to the obscured view point. Hand and head gesture based control is an option [Cruz-Neira et al. 1993]. However, certain sensor devices need to be worn to assure control accuracy and users are easy to feel tired. Although face tracking achieves accurate result in both 2D and 3D scenarios, the current state-of-the-art systems cannot work when half of the face is occluded by the VR headset because the shape model is trained by data from the whole face.","PeriodicalId":269034,"journal":{"name":"ACM SIGGRAPH 2015 Posters","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121976075","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
Continuous circular scribble arts 连续的圆形涂鸦艺术
ACM SIGGRAPH 2015 Posters Pub Date : 2015-07-31 DOI: 10.1145/2787626.2792600
Chun-Chia Chiu, Yi-Hsiang Lo, W. Ruan, Cheng-Han Yang, Ruen-Rone Lee, Hung-Kuo Chu
{"title":"Continuous circular scribble arts","authors":"Chun-Chia Chiu, Yi-Hsiang Lo, W. Ruan, Cheng-Han Yang, Ruen-Rone Lee, Hung-Kuo Chu","doi":"10.1145/2787626.2792600","DOIUrl":"https://doi.org/10.1145/2787626.2792600","url":null,"abstract":"Scribble art is a kind of illustrative drawing. Artists use continuous lines to convey the impression of an image or concept of a design. Unlike conventional line drawings such as sketching and hatching that commonly comprise of short and straight line segments, scribble artists aim at depicting the image with long and continuous curves. In this work, we study a typical curve pattern, circular scribble that appears most frequently in the artworks. Circular lines are drawn in either clockwise or counter-clockwise direction with varying radius in the circular scribble arts. The artists delicately trace along a seemingly random path and control the size and orientation of circular line pattern to depict a subject of their artwork. The main challenges lie in producing smooth transition between grayscale levels and preserving dominant image features using continuous loops and intersections of a circular scribble. Thus, the creation of circular scribble art is skill-demanding and time-consuming. In order to facilitate such process, we introduce a systematic approach to automatically synthesize circular scribble arts from images by tracing along a virtual path using solely a single continuous circular scribble with varying radius and orientation. We have tested our approach using a wide range of images and generate visually pleasing circular scribble arts (see Figure 1).","PeriodicalId":269034,"journal":{"name":"ACM SIGGRAPH 2015 Posters","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130681463","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
Touch the virtual reality: using the leap motion controller for hand tracking and wearable tactile devices for immersive haptic rendering 触摸虚拟现实:使用leap运动控制器进行手部跟踪，使用可穿戴触觉设备进行沉浸式触觉渲染
ACM SIGGRAPH 2015 Posters Pub Date : 2015-07-31 DOI: 10.1145/2787626.2792651
S. Scheggi, L. Meli, C. Pacchierotti, D. Prattichizzo
{"title":"Touch the virtual reality: using the leap motion controller for hand tracking and wearable tactile devices for immersive haptic rendering","authors":"S. Scheggi, L. Meli, C. Pacchierotti, D. Prattichizzo","doi":"10.1145/2787626.2792651","DOIUrl":"https://doi.org/10.1145/2787626.2792651","url":null,"abstract":"The complexity of the world around us is creating a demand for novel interfaces that will simplify and enhance the way we interact with the environment. The recently unveiled Android Wear operating system addresses this demand by providing a modern system for all those companies that are now developing wearable devices, also known as \"wearables\". Wearability of robotic devices will enable novel forms of human intention recognition through haptic signals and novel forms of communication between humans and robots. Specifically, wearable haptics will enable devices to communicate with humans during their interaction with the environment they share. Wearable haptic technology have been introduced in our everyday life by Sony. In 1997 its DualShock controller for PlayStation revolutionized the gaming industry by introducing a simple but effective vibrotactile feedback. More recently, Apple unveiled the Apple Watch, which embeds a linear actuator that can make the watch vibrate. It is used whenever the wearer receives an alert or notification, or to communicate with other Apple Watch owners.","PeriodicalId":269034,"journal":{"name":"ACM SIGGRAPH 2015 Posters","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126745629","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: 51
Real-time rendering of subsurface scattering according to translucency magnitude 根据半透明大小实时绘制地下散射
ACM SIGGRAPH 2015 Posters Pub Date : 2015-07-31 DOI: 10.1145/2787626.2792616
Hiroyuki Kubo, K. Tokoi, Y. Mukaigawa
{"title":"Real-time rendering of subsurface scattering according to translucency magnitude","authors":"Hiroyuki Kubo, K. Tokoi, Y. Mukaigawa","doi":"10.1145/2787626.2792616","DOIUrl":"https://doi.org/10.1145/2787626.2792616","url":null,"abstract":"To synthesize realistic translucent materials in computer graphics, it is necessary to simulate the effect of subsurface scattering. In previous works, several methods are proposed for rendering such materials in real-time. The screen space subsurface scattering (SSSS) is developed by Jimenez et al. [2009], yet the speed of rendering is not very practical for low-end computational environment, because screen space techniques require huge number of texture samplings. We previously propose a curvature-based shading method [Kubo et al. 2010] which approximates the effect of subsurface scattering according to the curvature. Since the curvature is determined by the surface shape of neighbors, it is not able to compute the effect of scattering light from the behind of the object. In this paper, we propose a novel shading method depending on the translucency magnitude which represents the significance of the subsurface scattering effect. According to the translucency magnitude, we modulate the reflectance to imitate the effect of subsurface scattering. Since this modulation is very simple to compute, we are able to render translucent materials in real-time not only in high-end workstations but also low-end mobile devices.","PeriodicalId":269034,"journal":{"name":"ACM SIGGRAPH 2015 Posters","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2015-07-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133451432","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
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