ACM Trans. Graph.最新文献_第5页

Interactive design and stability analysis of decorative joinery for furniture 家具装饰细木工的交互设计与稳定性分析

ACM Trans. Graph. Pub Date : 2017-04-21 DOI: 10.1145/3072959.3126857

Jiaxian Yao, D. Kaufman, Y. Gingold, Maneesh Agrawala

{"title":"Interactive design and stability analysis of decorative joinery for furniture","authors":"Jiaxian Yao, D. Kaufman, Y. Gingold, Maneesh Agrawala","doi":"10.1145/3072959.3126857","DOIUrl":"https://doi.org/10.1145/3072959.3126857","url":null,"abstract":"High-quality hand-made furniture often employs intrinsic joints that geometrically interlock along mating surfaces. Such joints increase the structural integrity of the furniture and add to its visual appeal. We present an interactive tool for designing such intrinsic joints. Users draw the visual appearance of the joints on the surface of an input furniture model as groups of two-dimensional (2D) regions that must belong to the same part. Our tool automatically partitions the furniture model into a set of solid 3D parts that conform to the user-specified 2D regions and assemble into the furniture. If the input does not merit assemblable solid 3D parts, then our tool reports the failure and suggests options for redesigning the 2D surface regions so that they are assemblable. Similarly, if any parts in the resulting assembly are unstable, then our tool suggests where additional 2D regions should be drawn to better interlock the parts and improve stability. To perform this stability analysis, we introduce a novel variational static analysis method that addresses shortcomings of the equilibrium method for our task. Specifically, our method correctly detects sliding instabilities and reports the locations and directions of sliding and hinging failures. We show that our tool can be used to generate over 100 joints inspired by traditional woodworking and Japanese joinery. We also design and fabricate nine complete furniture assemblies that are stable and connected using only the intrinsic joints produced by our tool.","PeriodicalId":7121,"journal":{"name":"ACM Trans. Graph.","volume":"110 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80517202","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: 7

Functional characterization of intrinsic and extrinsic geometry 内在和外在几何的功能表征

ACM Trans. Graph. Pub Date : 2017-04-21 DOI: 10.1145/3072959.3126796

E. Corman, J. Solomon, M. Ben-Chen, L. Guibas, M. Ovsjanikov

{"title":"Functional characterization of intrinsic and extrinsic geometry","authors":"E. Corman, J. Solomon, M. Ben-Chen, L. Guibas, M. Ovsjanikov","doi":"10.1145/3072959.3126796","DOIUrl":"https://doi.org/10.1145/3072959.3126796","url":null,"abstract":"We propose a novel way to capture and characterize distortion between pairs of shapes by extending the recently proposed framework of shape differences built on functional maps. We modify the original definition of shape differences slightly and prove that after this change, the discrete metric is fully encoded in two shape difference operators and can be recovered by solving two linear systems of equations. Then we introduce an extension of the shape difference operators using offset surfaces to capture extrinsic or embedding-dependent distortion, complementing the purely intrinsic nature of the original shape differences. Finally, we demonstrate that a set of four operators is complete, capturing intrinsic and extrinsic structure and fully encoding a shape up to rigid motion in both discrete and continuous settings. We highlight the usefulness of our constructions by showing the complementary nature of our extrinsic shape differences in capturing distortion ignored by previous approaches. We additionally provide examples where we recover local shape structure from the shape difference operators, suggesting shape editing and analysis tools based on manipulating shape differences.","PeriodicalId":7121,"journal":{"name":"ACM Trans. Graph.","volume":"35 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90153231","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: 10

Multi-contact locomotion using a contact graph with feasibility predictors 基于可行性预测的接触图的多接触运动

ACM Trans. Graph. Pub Date : 2017-04-21 DOI: 10.1145/3072959.3126849

Changgu Kang, Sung-Hee Lee

引用次数: 12

Fast weather simulation for inverse procedural design of 3D urban models 面向三维城市模型逆程序设计的快速天气模拟

ACM Trans. Graph. Pub Date : 2017-04-21 DOI: 10.1145/3072959.3126839

I. Garcia-Dorado, Daniel G. Aliaga, Saiprasanth Bhalachandran, P. Schmid, D. Niyogi

引用次数: 7

Domain of attraction expansion for physics-based character control 基于物理的角色控制的吸引力扩展领域

ACM Trans. Graph. Pub Date : 2017-04-21 DOI: 10.1145/3072959.3126850

M. A. Borno, M. V. D. Panne, E. Fiume

引用次数: 4

Interactive relighting in single low-dynamic range images 在单个低动态范围图像中的交互式重照明

ACM Trans. Graph. Pub Date : 2017-04-21 DOI: 10.1145/3072959.3126845

Jung-Hsuan Wu, Suguru Saito

引用次数: 0

Decomposing images into layers via RGB-space geometry 通过rgb空间几何将图像分解成层

ACM Trans. Graph. Pub Date : 2017-02-13 DOI: 10.1145/3072959.3126798

Jianchao Tan, Jyh-Ming Lien, Y. Gingold

{"title":"Decomposing images into layers via RGB-space geometry","authors":"Jianchao Tan, Jyh-Ming Lien, Y. Gingold","doi":"10.1145/3072959.3126798","DOIUrl":"https://doi.org/10.1145/3072959.3126798","url":null,"abstract":"In digital image editing software, layers organize images. However, layers are often not explicitly represented in the final image, and may never have existed for a scanned physical painting or a photograph. We propose a technique to decompose an image into layers. In our decomposition, each layer represents a single-color coat of paint applied with varying opacity. Our decomposition is based on the image’s RGB-space geometry. In RGB-space, the linear nature of the standard Porter-Duff [1984] “over” pixel compositing operation implies a geometric structure. The vertices of the convex hull of image pixels in RGB-space correspond to a palette of paint colors. These colors may be “hidden” and inaccessible to algorithms based on clustering visible colors. For our layer decomposition, users choose the palette size (degree of simplification to perform on the convex hull), as well as a layer order for the paint colors (vertices). We then solve a constrained optimization problem to find translucent, spatially coherent opacity for each layer, such that the composition of the layers reproduces the original image. We demonstrate the utility of the resulting decompositions for recoloring (global and local) and object insertion. Our layers can be interpreted as generalized barycentric coordinates; we compare to these and other recoloring approaches.","PeriodicalId":7121,"journal":{"name":"ACM Trans. Graph.","volume":"114 1","pages":"7:1-7:14"},"PeriodicalIF":0.0,"publicationDate":"2017-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85387012","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: 75

Optimal discrete slicing 最优离散切片

ACM Trans. Graph. Pub Date : 2017-02-13 DOI: 10.1145/3072959.3126803

M. Alexa, Kristian Hildebrand, S. Lefebvre

引用次数: 7

Antialiasing complex global illumination effects in path-space 路径空间中复杂全局照明效果的抗混叠

ACM Trans. Graph. Pub Date : 2017-02-13 DOI: 10.1145/3072959.3126812

Laurent Belcour, Ling-Qi Yan, R. Ramamoorthi, D. Nowrouzezahrai

引用次数: 3

A spatial target function for metropolis photon tracing 大都市光子跟踪的空间目标函数

ACM Trans. Graph. Pub Date : 2017-02-13 DOI: 10.1145/3072959.3126811

Adrien Gruson, Mickaël Ribardière, M. Sik, J. Vorba, R. Cozot, K. Bouatouch, Jaroslav Křivánek

{"title":"A spatial target function for metropolis photon tracing","authors":"Adrien Gruson, Mickaël Ribardière, M. Sik, J. Vorba, R. Cozot, K. Bouatouch, Jaroslav Křivánek","doi":"10.1145/3072959.3126811","DOIUrl":"https://doi.org/10.1145/3072959.3126811","url":null,"abstract":"The human visual system is sensitive to relative differences in luminance, but light transport simulation algorithms based on Metropolis sampling often result in a highly nonuniform relative error distribution over the rendered image. Although this issue has previously been addressed in the context of the Metropolis light transport algorithm, our work focuses on Metropolis photon tracing. We present a new target function (TF) for Metropolis photon tracing that ensures good stratification of photons leading to pixel estimates with equalized relative error. We develop a hierarchical scheme for progressive construction of the TF from paths sampled during rendering. In addition to the approach taken in previous work, where the TF is defined in the image plane, ours can be associated with compact spatial regions. This allows us to take advantage of illumination coherence to more robustly estimate the TF while adapting to geometry discontinuities. To sample from this TF, we design a new replica exchange Metropolis scheme. We apply our algorithm in progressive photon mapping and show that it often outperforms alternative approaches in terms of image quality by a large margin.","PeriodicalId":7121,"journal":{"name":"ACM Trans. Graph.","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2017-02-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89904418","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: 9