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User profiles for author:fc-langbein

Frank C Langbein

Cardiff University
Verified email at cf.ac.uk
Cited by 400

Approximate symmetry detection for reverse engineering

BI Mills, FC Langbein, AD Marshall… - Proceedings of the sixth …, 2001 - dl.acm.org
Abstract 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 ...

Fast and effective feature-preserving mesh denoising

…, RR Martin, FC Langbein - … and Computer Graphics …, 2007 - ieeexplore.ieee.org
Abstract We present a simple and fast mesh denoising method, which can remove noise
effectively while preserving mesh features such as sharp edges and corners. The method
consists of two stages. First, noisy face normals are filtered iteratively by weighted ...

Choosing consistent constraints for beautification of reverse engineered geometric models

FC Langbein, AD Marshall… - Computer-Aided Design, 2004 - Elsevier
Boundary representation models reconstructed from 3D range data suffer from various
inaccuracies caused by noise in the data and the model building software. Such models can
be improved in a beautification step, which finds geometric regularities approximately ...

[PDF] Estimate of frequencies of geometric regularities for use in reverse engineering of simple mechanical components

BI Mills, FC Langbein, AD Marshall… - Submitted to International …, 2001 - langbein.org
Abstract. The authors are investigating reverse engineering for reconstructing the shape of
simple mechanical parts. Currently, preliminary B-rep models can be created by fitting
surfaces to point clouds obtained by scanning an actual part using a 3D laser scanner. ...

Recognizing geometric patterns for beautification of reconstructed solid models

FC Langbein, BI Mills, AD Marshall… - Shape Modeling and …, 2001 - ieeexplore.ieee.org
Abstract 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 regular ...

Detecting approximate symmetries of discrete point subsets

M Li, FC Langbein… - Computer-Aided Design, 2008 - Elsevier
Detecting approximate symmetries of parts of a model is important when attempting to
determine the geometrical design intent of approximate boundary-representation (B-rep)
solid models produced eg by reverse engineering systems. For example, such detected ...

Segmenting reliefs on triangle meshes

S Liu, RR Martin, FC Langbein… - Proceedings of the 2006 …, 2006 - dl.acm.org
Abstract Sculptural reliefs are widely used in various industries for purposes such as
applying brands to packaging and decorating porcelain. In order to easily apply reliefs to
CAD models, it is often desirable to reverse-engineer previously designed and ...

[PDF] Beautification of reverse engineered geometric models

FC Langbein - 2003 - langbein.org
Abstract Boundary representation models reverse engineered from three-dimensional range
data suffer from various inaccuracies caused by noise in the data and the model building
software. Beautification aims to improve such models so that they exhibit exact geometric ...

Random walks for feature-preserving mesh denoising

…, PL Rosin, RR Martin, FC Langbein - Computer Aided Geometric …, 2008 - Elsevier
An approach to mesh denoising based on the concept of random walks is examined. The
proposed method consists of two stages: face normal filtering, followed by vertex position
updating to integrate the denoised face normals in a least-squares manner. Face normal ...

Bas-relief generation using adaptive histogram equalization

…, RR Martin, FC Langbein - … and Computer Graphics …, 2009 - ieeexplore.ieee.org
Abstract An algorithm is presented to automatically generate bas-reliefs based on adaptive
histogram equalization (AHE), starting from an input height field. A mesh model may
alternatively be provided, in which case a height field is first created via orthogonal or ...

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