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2 results on '"cgcad, Thss"'

1. Constrained Interpolation with Biarcs

Author

Liu, Xuzheng, Sun, Jiaguang, Zheng, Guo-Qin, Yong, Junhai, School of Software (THSS), Tsinghua University [Beijing] (THU), cgcad, Thss, Tsinghua University [Beijing], Computer Aided Design (CAD ), Laboratoire Franco-Chinois d'Informatique, d'Automatique et de Mathématiques Appliquées (LIAMA), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Chinese Academy of Sciences [Changchun Branch] (CAS)-Institut National de Recherche en Informatique et en Automatique (Inria)-Institute of Automation - Chinese Academy of Sciences-Centre National de la Recherche Scientifique (CNRS)-Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Chinese Academy of Sciences [Changchun Branch] (CAS)-Institut National de Recherche en Informatique et en Automatique (Inria)-Institute of Automation - Chinese Academy of Sciences-Centre National de la Recherche Scientifique (CNRS)-Inria Paris-Rocquencourt, Institut National de Recherche en Informatique et en Automatique (Inria), and Tsinghua, Thss

Subjects
const rained interpolation, biarc, [INFO.INFO-GR] Computer Science [cs]/Graphics [cs.GR], MathematicsofComputing_NUMERICALANALYSIS, [INFO.INFO-IA]Computer Science [cs]/Computer Aided Engineering, [INFO.INFO-GR]Computer Science [cs]/Graphics [cs.GR], st raight line const raint
Abstract

National audience; An algorithm to construct biarcs that not only match the interpolation requirement of the point positions and tangent vectors but also lie on one side of the constraint line is proposed. For C-type biarc interpolation with the line constraint , firstly twelve inequalities in total are provided according to different position relationships between the constraint line and the interpolation requirement. These inequalities are used to check if biarcs lie on one side of the constraint line. If there exist many biarcs satisfying both the interpolation requirement and the line constraint , the optimal biarc can be obtained by solving a minimum problem. Otherwise , one extra point is added to make it possible to obtain biarcs. For S-type biarc interpolation with the line constraint , some results are also listed.

Published
2007

2. A Survey on Solid Reconstruction from Engineering Drawings

Author

Gong, Jie-Hui, Zhang, Hui, School of Software (THSS), Tsinghua University [Beijing], Computer Aided Design (CAD ), Laboratoire Franco-Chinois d'Informatique, d'Automatique et de Mathématiques Appliquées (LIAMA), Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Chinese Academy of Sciences [Changchun Branch] (CAS)-Institut National de Recherche en Informatique et en Automatique (Inria)-Institute of Automation - Chinese Academy of Sciences-Centre National de la Recherche Scientifique (CNRS)-Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut National de la Recherche Agronomique (INRA)-Chinese Academy of Sciences [Changchun Branch] (CAS)-Institut National de Recherche en Informatique et en Automatique (Inria)-Institute of Automation - Chinese Academy of Sciences-Centre National de la Recherche Scientifique (CNRS)-Inria Paris-Rocquencourt, Institut National de Recherche en Informatique et en Automatique (Inria), Supported by the 973 Program of China under Grant No. 2004CB719404, Tsinghua, Thss, cgcad, Thss, Tsinghua University [Beijing] (THU), and cgcad

Subjects
[INFO.INFO-GR] Computer Science [cs]/Graphics [cs.GR], [INFO.INFO-IA]Computer Science [cs]/Computer Aided Engineering, [INFO.INFO-GR]Computer Science [cs]/Graphics [cs.GR], ComputingMethodologies_COMPUTERGRAPHICS
Abstract

National audience; Solid reconstruction from engineering drawings is one of the efficient technologies to product solid models, which has become one of the important research topics in both computer graphics and artificial intelligence. The problem of solid reconstruction from engineering drawings is captured. The taxonomy for solid reconstruction techniques is presented with the typical algorithms reviewed. After comparing the application areas of the algorithms, the open research issues are analyzed. Finally, the future work in the research field is also pointed out.

Published
2007

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