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Displaying 1-16 out of 16 total
Approximate Congruence Detection of Model Features for Reverse Engineering
Found in: Shape Modeling and Applications, International Conference on
By C. H. Gao, F. C. Langbein, A. D. Marshall, R. R. Martin
Issue Date:May 2003
pp. 69
Reverse engineering allows the geometric reconstruction of simple mechanical parts. However, the resulting models suffer from inaccuracies caused by errors in measurement and reconstruction so such models do not have the exact congruences, symmetries and o...
 
Numerical Methods for Beautification of Reverse Engineered Geometric Models
Found in: Geometric Modeling and Processing
By F. C. Langbein, A. D. Marshall, R. R. Martin
Issue Date:July 2002
pp. 159
Boundary representation models reconstructed from 3D range data suffer from various inaccuracies caused by noise in the data and the model building software. The quality of such models can be improved in a beautification step, which finds geometric regular...
 
Saliency-guided integration of multiple scans
Found in: 2012 IEEE Conference on Computer Vision and Pattern Recognition (CVPR)
By Ran Song, Yonghuai Liu,R. R. Martin,P. L. Rosin
Issue Date:June 2012
pp. 1474-1481
We present a novel method to integrate multiple 3D scans captured from different viewpoints. Saliency information is used to guide the integration process. The multi-scale saliency of a point is specifically designed to reflect its sensitivity to registrat...
 
Generalized Anisotropic Stratified Surface Sampling
Found in: IEEE Transactions on Visualization and Computer Graphics
By J. A. Quinn,F. C. Langbein, Yu-Kun Lai,R. R. Martin
Issue Date:July 2013
pp. 1143-1157
We introduce a novel stratified sampling technique for mesh surfaces that gives the user control over sampling density and anisotropy via a tensor field. Our approach is based on sampling space-filling curves mapped onto mesh segments via parametrizations ...
 
Changing Perspective in Stereoscopic Images
Found in: IEEE Transactions on Visualization and Computer Graphics
By Song-Pei Du, Shi-Min Hu,R. R. Martin
Issue Date:August 2013
pp. 1288-1297
Traditional image editing techniques cannot be directly used to edit stereoscopic (
 
Semiregular Solid Texturing from 2D Image Exemplars
Found in: IEEE Transactions on Visualization and Computer Graphics
By Song-Pei Du, Shi-Min Hu,R. R. Martin
Issue Date:March 2013
pp. 460-469
Solid textures, comprising 3D particles embedded in a matrix in a regular or semiregular pattern, are common in natural and man-made materials, such as brickwork, stone walls, plant cells in a leaf, etc. We present a novel technique for synthesizing such t...
 
SuperMatching: Feature Matching Using Supersymmetric Geometric Constraints
Found in: IEEE Transactions on Visualization and Computer Graphics
By Zhi-Quan Cheng, Yin Chen,R. R. Martin, Yu-Kun Lai, Aiping Wang
Issue Date:November 2013
pp. 1885-1894
Feature matching is a challenging problem at the heart of numerous computer graphics and computer vision applications. We present the SuperMatching algorithm for finding correspondences between two sets of features. It does so by considering triples or hig...
 
Timeline Editing of Objects in Video
Found in: IEEE Transactions on Visualization and Computer Graphics
By Shao-Ping Lu, Song-Hai Zhang, Jin Wei, Shi-Min Hu,R. R. Martin
Issue Date:July 2013
pp. 1218-1227
We present a video editing technique based on changing the timelines of individual objects in video, which leaves them in their original places but puts them at different times. This allows the production of object-level slow motion effects, fast motion ef...
 
Registration of 3D Point Clouds and Meshes: A Survey from Rigid to Nonrigid
Found in: IEEE Transactions on Visualization and Computer Graphics
By G. K. L. Tam, Zhi-Quan Cheng, Yu-Kun Lai,F. C. Langbein, Yonghuai Liu,D. Marshall,R. R. Martin, Xian-Fang Sun,P. L. Rosin
Issue Date:July 2013
pp. 1199-1217
Three-dimensional surface registration transforms multiple three-dimensional data sets into the same coordinate system so as to align overlapping components of these sets. Recent surveys have covered different aspects of either rigid or nonrigid registrati...
 
Interpreting Line Drawings of Objects with K-Vertices
Found in: Geometric Modeling and Processing
By P. A. C. Varley, H. Suzuki, R. R. Martin
Issue Date:April 2004
pp. 249
As part of the goal of automatic creation of B-rep models of engineering objects from freehand sketches, we seek to take a single line drawing (with hidden lines removed), and from it deduce an initial 3D geometric realisation of the visible part of the dr...
 
pyMDO: An Object-Oriented Framework for Multidisciplinary Design Optimization
Found in: ACM Transactions on Mathematical Software (TOMS)
By Christopher Marriage, Joaquim R. R. A. Martins, Nathan Tedford
Issue Date:August 2009
pp. 1-25
We present pyMDO, an object-oriented framework that facilitates the usage and development of algorithms for multidisciplinary optimization (MDO). The resulting implementation of the MDO methods is efficient and portable. The main advantage of the proposed ...
     
Detecting approximate incomplete symmetries in discrete point sets
Found in: Proceedings of the 2007 ACM symposium on Solid and physical modeling (SPM '07)
By F. C. Langbein, M. Li, R. R. Martin
Issue Date:June 2007
pp. 335-340
Motivated by the need to detect design intent in approximate boundary representation models, we give an algorithm to detect incomplete symmetries of discrete points, giving the models' potential local symmetries at various automatically detected tolerances...
     
Geometric texture synthesis and transfer via geometry images
Found in: Proceedings of the 2005 ACM symposium on Solid and physical modeling (SPM '05)
By D. X. Gu, R. R. Martin, S.-M. Hu, Y.-K. Lai
Issue Date:June 2005
pp. 15-26
In this paper, we present an automatic method which can transfer geometric textures from one object to another, and can apply a manually designed geometric texture to a model. Our method is based on geometry images as introduced by Gu et al. The key ideas ...
     
Estimating depth from line drawing
Found in: Proceedings of the seventh ACM symposium on Solid modeling and applications (SMA '02)
By P. A. C. Varley, R. R. Martin
Issue Date:June 2002
pp. 180-191
Our goal is unassisted machine interpretation of a single line drawing of an engineering object (with hidden lines removed) as a B-rep model. As part of this process, we seek to deduce a frontal geometry of the object, a 3D geometric realisation of that pa...
     
Approximate symmetry detection for reverse engineering
Found in: Proceedings of the sixth ACM symposium on Solid modeling and applications (SMA '01)
By A. D. Marshall, B. I. Mills, F. C. Langbein, R. R. Martin
Issue Date:May 2001
pp. 241-248
The authors are developing an automated reverse engineering system for reconstructing the shape of simple mechanical parts. B-rep models are created by fitting surfaces to point clouds obtained by scanning an object using a 3D laser scanner. The resulting ...
     
Creating solid models from single 2D sketches
Found in: Proceedings of the third ACM symposium on Solid modeling and applications (SMA '95)
By I. J. Grimstead, R. R. Martin
Issue Date:May 1995
pp. 323-337
The problem of interconnect architecture arises when an array of processors needs to be integrated on one chip. With the deep sub-micron technology, devices become cheap while wires are expensive. On the other hand, high performance systems require the sho...
     
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