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NETRA: interactive display for estimating refractive errors and focal range 用于估计屈光误差和焦距的交互式显示器
ACM SIGGRAPH 2010 papers Pub Date : 2010-07-26 DOI: 10.1145/1833349.1778814
Vitor F. Pamplona, Ankit Mohan, M. M. O. Neto, R. Raskar
{"title":"NETRA: interactive display for estimating refractive errors and focal range","authors":"Vitor F. Pamplona, Ankit Mohan, M. M. O. Neto, R. Raskar","doi":"10.1145/1833349.1778814","DOIUrl":"https://doi.org/10.1145/1833349.1778814","url":null,"abstract":"We introduce an interactive, portable, and inexpensive solution for estimating refractive errors in the human eye. While expensive optical devices for automatic estimation of refractive correction exist, our goal is to greatly simplify the mechanism by putting the human subject in the loop. Our solution is based on a high-resolution programmable display and combines inexpensive optical elements, interactive GUI, and computational reconstruction. The key idea is to interface a lenticular view-dependent display with the human eye in close range - a few millimeters apart. Via this platform, we create a new range of interactivity that is extremely sensitive to parameters of the human eye, like refractive errors, focal range, focusing speed, lens opacity, etc. We propose several simple optical setups, verify their accuracy, precision, and validate them in a user study.","PeriodicalId":132490,"journal":{"name":"ACM SIGGRAPH 2010 papers","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114990005","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: 87
Robust physics-based locomotion using low-dimensional planning 鲁棒的基于物理的运动使用低维规划
ACM SIGGRAPH 2010 papers Pub Date : 2010-07-26 DOI: 10.1145/1833349.1778808
Igor Mordatch, Martin de Lasa, Aaron Hertzmann
{"title":"Robust physics-based locomotion using low-dimensional planning","authors":"Igor Mordatch, Martin de Lasa, Aaron Hertzmann","doi":"10.1145/1833349.1778808","DOIUrl":"https://doi.org/10.1145/1833349.1778808","url":null,"abstract":"This paper presents a physics-based locomotion controller based on online planning. At each time-step, a planner optimizes locomotion over multiple phases of gait. Stance dynamics are modeled using a simplified Spring-Load Inverted (SLIP) model, while flight dynamics are modeled using projectile motion equations. Full-body control at each instant is optimized to match the instantaneous plan values, while also maintaining balance. Different types of gaits, including walking, running, and jumping, emerge automatically, as do transitions between different gaits. The controllers can traverse challenging terrain and withstand large external disturbances, while following high-level user commands at interactive rates.","PeriodicalId":132490,"journal":{"name":"ACM SIGGRAPH 2010 papers","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117144160","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: 196
Session details: Collisions and contact 会话细节:碰撞和接触
ACM SIGGRAPH 2010 papers Pub Date : 2010-07-26 DOI: 10.1145/3251991
{"title":"Session details: Collisions and contact","authors":"","doi":"10.1145/3251991","DOIUrl":"https://doi.org/10.1145/3251991","url":null,"abstract":"","PeriodicalId":132490,"journal":{"name":"ACM SIGGRAPH 2010 papers","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125881739","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
VideoMocap: modeling physically realistic human motion from monocular video sequences VideoMocap:从单目视频序列建模物理逼真的人体运动
ACM SIGGRAPH 2010 papers Pub Date : 2010-07-26 DOI: 10.1145/1833349.1778779
Xiaolin K. Wei, Jinxiang Chai
{"title":"VideoMocap: modeling physically realistic human motion from monocular video sequences","authors":"Xiaolin K. Wei, Jinxiang Chai","doi":"10.1145/1833349.1778779","DOIUrl":"https://doi.org/10.1145/1833349.1778779","url":null,"abstract":"This paper presents a video-based motion modeling technique for capturing physically realistic human motion from monocular video sequences. We formulate the video-based motion modeling process in an image-based keyframe animation framework. The system first computes camera parameters, human skeletal size, and a small number of 3D key poses from video and then uses 2D image measurements at intermediate frames to automatically calculate the \"in between\" poses. During reconstruction, we leverage Newtonian physics, contact constraints, and 2D image measurements to simultaneously reconstruct full-body poses, joint torques, and contact forces. We have demonstrated the power and effectiveness of our system by generating a wide variety of physically realistic human actions from uncalibrated monocular video sequences such as sports video footage.","PeriodicalId":132490,"journal":{"name":"ACM SIGGRAPH 2010 papers","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129831184","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: 115
Popup: automatic paper architectures from 3D models 弹出:自动纸架构从3D模型
ACM SIGGRAPH 2010 papers Pub Date : 2010-07-26 DOI: 10.1145/1833349.1778848
Xian-Ying Li, Chao-Hui Shen, Shi-Sheng Huang, T. Ju, Shimin Hu
{"title":"Popup: automatic paper architectures from 3D models","authors":"Xian-Ying Li, Chao-Hui Shen, Shi-Sheng Huang, T. Ju, Shimin Hu","doi":"10.1145/1833349.1778848","DOIUrl":"https://doi.org/10.1145/1833349.1778848","url":null,"abstract":"Paper architectures are 3D paper buildings created by folding and cutting. The creation process of paper architecture is often labor-intensive and highly skill-demanding, even with the aid of existing computer-aided design tools. We propose an automatic algorithm for generating paper architectures given a user-specified 3D model. The algorithm is grounded on geometric formulation of planar layout for paper architectures that can be popped-up in a rigid and stable manner, and sufficient conditions for a 3D surface to be popped-up from such a planar layout. Based on these conditions, our algorithm computes a class of paper architectures containing two sets of parallel patches that approximate the input geometry while guaranteed to be physically realizable. The method is demonstrated on a number of architectural examples, and physically engineered results are presented.","PeriodicalId":132490,"journal":{"name":"ACM SIGGRAPH 2010 papers","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129753682","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: 107
Paneling architectural freeform surfaces 镶板建筑自由曲面
ACM SIGGRAPH 2010 papers Pub Date : 2010-07-26 DOI: 10.1145/1833349.1778782
Michael Eigensatz, M. Kilian, A. Schiftner, N. Mitra, H. Pottmann, M. Pauly
{"title":"Paneling architectural freeform surfaces","authors":"Michael Eigensatz, M. Kilian, A. Schiftner, N. Mitra, H. Pottmann, M. Pauly","doi":"10.1145/1833349.1778782","DOIUrl":"https://doi.org/10.1145/1833349.1778782","url":null,"abstract":"The emergence of large-scale freeform shapes in architecture poses big challenges to the fabrication of such structures. A key problem is the approximation of the design surface by a union of patches, so-called panels, that can be manufactured with a selected technology at reasonable cost, while meeting the design intent and achieving the desired aesthetic quality of panel layout and surface smoothness. The production of curved panels is mostly based on molds. Since the cost of mold fabrication often dominates the panel cost, there is strong incentive to use the same mold for multiple panels. We cast the major practical requirements for architectural surface paneling, including mold reuse, into a global optimization framework that interleaves discrete and continuous optimization steps to minimize production cost while meeting user-specified quality constraints. The search space for optimization is mainly generated through controlled deviation from the design surface and tolerances on positional and normal continuity between neighboring panels. A novel 6-dimensional metric space allows us to quickly compute approximate inter-panel distances, which dramatically improves the performance of the optimization and enables the handling of complex arrangements with thousands of panels. The practical relevance of our system is demonstrated by paneling solutions for real, cutting-edge architectural freeform design projects.","PeriodicalId":132490,"journal":{"name":"ACM SIGGRAPH 2010 papers","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129099079","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: 194
Session details: Lighting & material design 会议细节:灯光和材料设计
ACM SIGGRAPH 2010 papers Pub Date : 2010-07-26 DOI: 10.1145/3251980
{"title":"Session details: Lighting & material design","authors":"","doi":"10.1145/3251980","DOIUrl":"https://doi.org/10.1145/3251980","url":null,"abstract":"","PeriodicalId":132490,"journal":{"name":"ACM SIGGRAPH 2010 papers","volume":"259 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114526453","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
Controllable conformal maps for shape deformation and interpolation 用于形状变形和插值的可控保角映射
ACM SIGGRAPH 2010 papers Pub Date : 2010-07-26 DOI: 10.1145/1833349.1778815
O. Weber, C. Gotsman
{"title":"Controllable conformal maps for shape deformation and interpolation","authors":"O. Weber, C. Gotsman","doi":"10.1145/1833349.1778815","DOIUrl":"https://doi.org/10.1145/1833349.1778815","url":null,"abstract":"Conformal maps are considered very desirable for planar deformation applications, since they allow only local rotations and scale, avoiding shear and other visually disturbing distortions of local detail. Conformal maps are also orientation-preserving C∞ diffeomorphisms, meaning they are extremely smooth and prevent unacceptable \"foldovers\" in the plane. Unfortunately, these maps are also notoriously difficult to control, so working with them in an interactive animation scenario to achieve specific effects is a significant challenge, sometimes even impossible. We describe a novel 2D shape deformation system which generates conformal maps, yet provides the user a large degree of control over the result. For example, it allows discontinuities at user-specified boundary points, so true \"bends\" can be introduced into the deformation. It also allows the prescription of angular constraints at corners of the target image. Combining these provides for a very effective user experience. At the heart of our method is a very natural differential shape representation for conformal maps, using so-called \"conformal factors\" and \"angular factors\", which allow more intuitive control compared to representation in the usual spatial domain. Beyond deforming a given shape into a new one at each key frame, our method also provides the ability to interpolate between shapes in a very natural way, such that also the intermediate deformations are conformal. Our method is extremely efficient: it requires only the solution of a small dense linear system at preprocess time and a matrix-vector multiplication during runtime (which can be implemented on a modern GPU), thus the deformations, even on extremely large images, may be performed in real-time.","PeriodicalId":132490,"journal":{"name":"ACM SIGGRAPH 2010 papers","volume":"428 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116278837","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: 79
Session details: Geometry algorithms & sampling 会议细节:几何算法和采样
ACM SIGGRAPH 2010 papers Pub Date : 2010-07-26 DOI: 10.1145/3251981
{"title":"Session details: Geometry algorithms & sampling","authors":"","doi":"10.1145/3251981","DOIUrl":"https://doi.org/10.1145/3251981","url":null,"abstract":"","PeriodicalId":132490,"journal":{"name":"ACM SIGGRAPH 2010 papers","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121576666","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
Fabricating spatially-varying subsurface scattering 制造空间变化的地下散射
ACM SIGGRAPH 2010 papers Pub Date : 2010-07-26 DOI: 10.1145/1833349.1778799
Yue Dong, Jiaping Wang, F. Pellacini, Xin Tong, B. Guo
{"title":"Fabricating spatially-varying subsurface scattering","authors":"Yue Dong, Jiaping Wang, F. Pellacini, Xin Tong, B. Guo","doi":"10.1145/1833349.1778799","DOIUrl":"https://doi.org/10.1145/1833349.1778799","url":null,"abstract":"Many real world surfaces exhibit translucent appearance due to subsurface scattering. Although various methods exists to measure, edit and render subsurface scattering effects, no solution exists for manufacturing physical objects with desired translucent appearance. In this paper, we present a complete solution for fabricating a material volume with a desired surface BSSRDF. We stack layers from a fixed set of manufacturing materials whose thickness is varied spatially to reproduce the heterogeneity of the input BSSRDF. Given an input BSSRDF and the optical properties of the manufacturing materials, our system efficiently determines the optimal order and thickness of the layers. We demonstrate our approach by printing a variety of homogenous and heterogenous BSSRDFs using two hardware setups: a milling machine and a 3D printer.","PeriodicalId":132490,"journal":{"name":"ACM SIGGRAPH 2010 papers","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121590276","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: 125
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