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Displaying 1-6 out of 6 total
Bas-Relief Generation Using Adaptive Histogram Equalization
Found in: IEEE Transactions on Visualization and Computer Graphics
By Xianfang Sun, Paul L. Rosin, Ralph R. Martin, Frank C. Langbein
Issue Date:July 2009
pp. 642-653
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...
 
Noise in 3D laser range scanner data
Found in: Shape Modeling and Applications, International Conference on
By Xianfang Sun, Paul L. Rosin, Ralph R. Martin, Frank C. Langbein
Issue Date:June 2008
pp. 37-45
This paper discusses noise in range data measured by a Konica Minolta Vivid 910 scanner. Previous papers considering denoising 3D mesh data have often used artificial data comprising Gaussian noise, which is independently distributed at each mesh point. Me...
 
Merging and smoothing machining boundaries on cutter location surfaces
Found in: Proceedings of the 14th ACM Symposium on Solid and Physical Modeling (SPM '10)
By Frank C. Langbein, Ralph R. Martin, Weishi Li
Issue Date:September 2010
pp. 165-170
In region machining, neighbouring regions may be close together, but disconnected. Boundary curves may also have unwanted geometric artifacts caused by approximation and discretisation. We present a strategy to improve the topology and geometry of such bou...
     
Generating smooth parting lines for mold design for meshes
Found in: Proceedings of the 2007 ACM symposium on Solid and physical modeling (SPM '07)
By Frank C. Langbein, Ralph R. Martin, Weishi Li
Issue Date:June 2007
pp. 193-204
This paper considers the mold design problem of computing a parting line for a complex mesh model, given a parting direction. Existing parting line algorithms are unsuitable for this case, as local variations in the orientations of the facets of such model...
     
Random walks for mesh denoising
Found in: Proceedings of the 2007 ACM symposium on Solid and physical modeling (SPM '07)
By Frank C. Langbein, Paul L. Rosin, Ralph R. Martin, Xianfang Sun
Issue Date:June 2007
pp. 11-22
This paper considers an approach to mesh denoising based on the concept of random walks. The proposed method consists of two stages: a face normal filtering procedure, followed by a vertex position updating procedure which integrates the denoised face norm...
     
Segmenting reliefs on triangle meshes
Found in: Proceedings of the 2006 ACM symposium on Solid and physical modeling (SPM '06)
By Frank C. Langbein, Paul L. Rosin, Ralph R. Martin, Shenglan Liu
Issue Date:June 2006
pp. 7-16
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 manufactu...
     
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