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From a Single Point to a Surface Patch by Growing Minimal Paths [chapter]

Fethallah Benmansour, Laurent D. Cohen
2009 Lecture Notes in Computer Science  
We introduce a novel implicit approach for surface patch segmentation in 3D images starting from a single point.  ...  First, Using a front propagation approach from the source point chosen by the user, one can see that the closed curve corresponds to valley line of the arrival time from the source point.  ...  Acknowledgement We would like to thank Stéphane Bonneau for his contributions, and Professor Anthony J. Yezzi for interesting discussions. Financial support was provided by ...  ... 
doi:10.1007/978-3-642-02256-2_54 fatcat:mptlz6a7pbcz7ooppo4m6ek7be

Interactive seismic interpretation with piecewise global energy minimization

Thomas Hollt, Johanna Beyer, Fritz Gschwantner, Philipp Muigg, Helmut Doleisch, Gabor Heinemann, Markus Hadwiger
2011 2011 IEEE Pacific Visualization Symposium  
We introduce a combination of 2D and 3D minimal cost path and minimal cost surface tracing for extracting horizons with very little user input.  ...  By processing the volume based on well positions rather than slice-based, we are able to create a piecewise optimal horizon surface at interactive rates.  ...  However, dead end paths/surface patches, connected to the surface would not be removed by growing.  ... 
doi:10.1109/pacificvis.2011.5742373 dblp:conf/apvis/HolltBGMDHH11 fatcat:f4s5duj5lzdznfly2zusy32vce

A Graph-Spectral Approach to Shape-From-Shading

A. Robles-Kelly, E. Hancock
2004 IEEE Transactions on Image Processing  
Modeling the blocks of the weight matrix as distinct surface patches, we use a graph seriation method to find a surface integration path that maximizes the sum of curvature-dependent weights and that can  ...  In this paper, we explore how graph-spectral methods can be used to develop a new shape-from-shading algorithm.  ...  The sites visited by the integration path can be viewed as constituting a single surface patch.  ... 
doi:10.1109/tip.2004.828414 pmid:15648858 fatcat:t7cvobpqwbfivevzlann4uxdeq

Single Image Object Modeling Based on BRDF and r-Surfaces Learning

Fabrizio Natola, Valsamis Ntouskos, Fiora Pirri, Marta Sanzari
2016 2016 IEEE Conference on Computer Vision and Pattern Recognition (CVPR)  
A methodology for 3D surface modeling from a single image is proposed. The principal novelty is concave and specular surface modeling without any externally imposed prior.  ...  The object surface is further refined basing on a photo-consistency formulation that relates for error minimization the original image and the modeled object.  ...  Acknowledgments Supported by the EU FP7 TRADR (609763) and the EU H2020 SecondHands (643950) projects. We thank the anonymous reviewers for their insightful comments.  ... 
doi:10.1109/cvpr.2016.478 dblp:conf/cvpr/NatolaNPS16 fatcat:byb3i25icfdmrhh7yyizznnhza

Reverse Engineering Employing a Wrap-Around SurfaceTriangle Set [chapter]

Colin Bradley, Vincent Chan
1999 IFIP Advances in Information and Communication Technology  
A technique for producing a CNC tool path from the STS model is also presented.  ...  This paper presents a reverse engineering technique for modelling objects digitized by a cloud of three-dimensional (3-D) data points.  ...  The CC points are created from the STS by means of an intersection plane6, as shown in Figure 6 . cutter path Figure 6 . Generation of the CC points from the STS surface model.  ... 
doi:10.1007/978-0-387-35392-0_19 fatcat:rnbwalco6zglbnd2y2isqogxym

A fast multi-obstacle muscle wrapping method using natural geodesic variations

Andreas Scholz, Michael Sherman, Ian Stavness, Scott Delp, Andrés Kecskeméthy
2015 Multibody system dynamics  
Biologically accurate wrapping surfaces are complex, and a single muscle path may wrap around many obstacles.  ...  The total path is regarded as a concatenation of straight-line segments between local surface geodesics, where each geodesic is naturally parameterized by its starting point, direction, and length.  ...  nonlinear energy-minimization approach; (ii) a geometry benchmark that contains multiple complex wrapping obstacles including a surface patch fitted to a human ribcage; and (iii) a computational-speed  ... 
doi:10.1007/s11044-015-9451-1 fatcat:u2zpvzr72vf7tpyypfsswuk4c4

Fast Catheter Segmentation From Echocardiographic Sequences Based on Segmentation From Corresponding X-Ray Fluoroscopy for Cardiac Catheterization Interventions

Xianliang Wu, James Housden, YingLiang Ma, Benjamin Razavi, Kawal Rhode, Daniel Rueckert
2015 IEEE Transactions on Medical Imaging  
The main contributions include: 1) a Kalman filter-based growing strategy with more clinical data evalution; 2) a SURF detector applied in a constrained search space for catheter segmentation in ultrasound  ...  images; 3) a two layer hierarchical graph model to integrate and smooth catheter fragments into a complete catheter; and 4) the integration of these components into a system for clinical applications.  ...  Thus it is not suitable for tubular structure measurement in 3-D echo volumes; 2) the previous method used a shortest path model in a single layer graph to extract the catheter from the back-projected  ... 
doi:10.1109/tmi.2014.2360988 pmid:25291790 fatcat:plvoybhbnvgohleenqotyy6vsi

Shape reconstruction from gradient data

Svenja Ettl, Jürgen Kaminski, Markus C. Knauer, Gerd Häusler
2008 Applied Optics  
For many applications, however, it is necessary to acquire the shape, which must be calculated from the slopes by numerical integration.  ...  We present a novel method for reconstructing the shape of an object from measured gradient data. A certain class of optical sensors does not measure the shape of an object, but its local slope.  ...  We choose the size of the patches as big as possible, provided that a single patch can still be handled efficiently.  ... 
doi:10.1364/ao.47.002091 pmid:18425183 fatcat:mftxxnbdynadrd4zgz4r2qskhi

Surface Reconstruction by Propagating 3D Stereo Data in Multiple 2D Images [chapter]

Gang Zeng, Sylvain Paris, Long Quan, Maxime Lhuillier
2004 Lecture Notes in Computer Science  
The idea is therefore to first construct small surface patches from stereo points, then to progressively propagate only reliable patches in their neighborhood from images into the whole surface using a  ...  The problem reduces to searching for an optimal local surface patch going through a given set of stereo points from images.  ...  Acknowledgements This project is supported by the Hong Kong RGC grant HKUST 6188/02E. Also thanks to Yichen Wei and Ajay Kumar for allowing us to use their head images.  ... 
doi:10.1007/978-3-540-24670-1_13 fatcat:42i5wwj6drdhhkm4s2oxp7t7tu

Feature-based surface parameterization and texture mapping

Eugene Zhang, Konstantin Mischaikow, Greg Turk
2005 ACM Transactions on Graphics  
In the last stage, we create one or two patches for each feature region based on a covariance matrix of the feature's surface points.  ...  Therefore, we use the Green-Lagrange tensor to measure and to guide the optimization process. Furthermore, we allow the boundary vertices of a patch to be optimized by adding scaffold triangles.  ...  Finally, we wish to thank our anonymous reviewers for their valuable comments and suggestions.  ... 
doi:10.1145/1037957.1037958 fatcat:gssxshuwz5hb5a5jlyonaztk2m

Multi-Level Surface Maps for Outdoor Terrain Mapping and Loop Closing

Rudolph Triebel, Patrick Pfaff, Wolfram Burgard
2006 2006 IEEE/RSJ International Conference on Intelligent Robots and Systems  
In this paper, we propose a new representation denoted as multi-level surface maps (MLS maps). Our approach allows to store multiple surfaces in each cell of the grid.  ...  path planning and localization.  ...  The corresponding points v i c and v ′ j c are extracted from traversable surface patches, w i c and w ′ j c are extracted from not traversable surfaces.  ... 
doi:10.1109/iros.2006.282632 dblp:conf/iros/TriebelPB06 fatcat:xzggbdcv3jbwxh2ilpzgcjmd2a

Dynamic Programming Based Segmentation in Biomedical Imaging

Kathrin Ungru, Xiaoyi Jiang
2017 Computational and Structural Biotechnology Journal  
Biomedical images often suffer from noisy data and fuzzy edges. Therefore, there is a need for robust methods for contour and line detection.  ...  Aim is to support expert decisions in interactive applications or to include it as part of a processing pipeline for automatic image analysis.  ...  Acknowledgements We acknowledge support by Open Access Publication Fund of University of Münster.  ... 
doi:10.1016/j.csbj.2017.02.001 pmid:28289536 pmcid:PMC5338725 fatcat:byd4sfuxtjazxkdfjxj3saq6dm

Energy-Minimizing Curve Fitting for High-Order Surface Mesh Generation

Karsten Bock, Jörg Stiller
2014 Applied Mathematics  
Preliminary application to surface mesh generation shows a remarkable improvement of patch quality in high curvature regions.  ...  This energy-minimizing fitting strategy is applied to analytically defined as well as triangulated surfaces.  ...  Acknowledgements The authors gratefully acknowledge the funding of this project by the German Research Foundation (DFG, STI 157/4-1).  ... 
doi:10.4236/am.2014.521309 fatcat:ifepuanfdzcvregrm6xs4qpeaa

Local Geodesic Parametrization: an Ant's Perspective [chapter]

Lior Shapira, Ariel Shamir
2009 Mathematics and Visualization  
Most works focus on parameterizing complete surfaces, attempting to satisfy various constraints on distances and angles and produce a 2D map with minimal errors.  ...  We try and acquire the perspective of an ant living on the surface. The point on which it stands is the center of its world, and importance diminishes from there onward.  ...  This is done until convergence to a single point.  ... 
doi:10.1007/b106657_7 fatcat:37jbb2b22bd2fjctoxcwmcglny

Interactive Inverse 3D Modeling

James Andrews, Hailin Jin, Carlo Séquin
2012 Computer-Aided Design and Applications  
Interactive Inverse 3D Modeling" is a user-guided approach to shape construction and redesign that extracts well-structured, parameterized, procedural descriptions from unstructured, hierarchically flat  ...  input data, such as point clouds, boundary representation meshes, or even multiple pictorial views of a given inspirational prototype.  ...  ACKNOWLEDGEMENTS This work was supported in part by the National Science Foundation (NSF award #CMMI-1029662 (EDI)) and by Adobe Systems.  ... 
doi:10.3722/cadaps.2012.881-900 fatcat:c77puvkpjbh6fhzrjezagke2ee
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