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Alexandra Bac


56 documents

Articles dans une revue11 documents

  • Alexandre Marin, Alexandra Bac, Laurent Astart. Generating 3D Anisotropic Centroidal Voronoi Tessellations. International Journal of Mathematical, Computational, Statistical, Natural and Physical Engineering, 2024, 18 (9). ⟨hal-04706922⟩
  • Yann-Situ Gazull, Alexandra Bac, Aldo Gonzalez-Lorenzo. Computing Geometrical Measures of Topological Holes. Computer-Aided Design, 2023, 163, pp.103563. ⟨10.1016/j.cad.2023.103563⟩. ⟨hal-04322031⟩
  • Jules Morel, Alexandra Bac, Takashi Kanai. Segmentation of unbalanced and in-homogeneous point clouds and its application to 3D scanned trees. The Visual Computer, 2020. ⟨hal-03418434⟩
  • Joris Ravaglia, Richard A Fournier, Alexandra Bac, Cédric Véga, Jean-François Côté, et al.. Comparison of Three Algorithms to Estimate Tree Stem Diameter from Terrestrial Laser Scanner Data. Forests, 2019, 10 (7), pp.599. ⟨10.3390/f10070599⟩. ⟨hal-03325416⟩
  • Jules Morel, Alexandra Bac, Cedric Vega. Surface reconstruction of incomplete datasets: A novel Poisson surface approach based on CSRBF. Computers and Graphics, 2018, 74, pp.44-55. ⟨10.1016/j.cag.2018.05.004⟩. ⟨hal-02109646⟩
  • Aldo Gonzalez-Lorenzo, Alexandra Bac, Jean-Luc Mari, Pedro Real. Allowing cycles in discrete Morse theory. Topology and its Applications, 2017, 228, pp.1-35. ⟨10.1016/j.topol.2017.05.008⟩. ⟨hal-01528103⟩
  • Jules Morel, Alexandra Bac, Cédric Vega. Terrain model reconstruction from terrestrial LiDAR data using radial basis functions. IEEE Computer Graphics and Applications, 2017, 37 (5), pp.72-84. ⟨10.1109/MCG.2017.3621225⟩. ⟨hal-01380160⟩
  • Joris Ravaglia, Alexandra Bac, Richard A Fournier. Extraction of tubular shapes from dense point clouds and application to tree reconstruction from laser scanned data. Computers and Graphics, 2017, 66, pp.23-33. ⟨10.1016/j.cag.2017.05.016⟩. ⟨hal-01685214⟩
  • Pedro Real, Helena Molina-Abril, Aldo Gonzalez-Lorenzo, Alexandra Bac, Jean-Luc Mari. Searching combinatorial optimality using graph-based homology information. Applicable Algebra in Engineering, Communication and Computing, 2015, 26 (1-2), pp. 103-120. ⟨10.1007/s00200-014-0248-x⟩. ⟨hal-01285969⟩
  • Alexandra Bac, Marc Daniel, Jean-Louis Maltret. 3D modeling and segmentation with discrete curvatures. Journal of Medical Informatics and Technology, 2005, 9, pp.13--24. ⟨hal-01288298⟩
  • Alexandra Bac. Un modèle relationnel de la logique linéaire du second ordre. Notes aux Comptes-Rendus de l'Académie des Sciences, 2001, 334 (2). ⟨hal-01380172⟩

Communications dans un congrès39 documents

  • Alexandre Marin, Wassim Ahmed-Belkacem, Alexandra Bac, Laurent Astart. A New Data Structure For Handling Efficiently Polyhedral Complexes. RING Meeting, Jun 2022, Nancy, France. ⟨hal-03650376⟩
  • Aldo Gonzalez-Lorenzo, Alexandra Bac, Jean-Luc Mari. A Heuristic for Short Homology Basis of Digital Objects. International Joint Conference on Discrete Geometry and Mathematical Morphology (DGMM), 2022, Strasbourg, France. pp.60-70, ⟨10.1007/978-3-031-19897-7_6⟩. ⟨hal-03953372⟩
  • Yann-Situ Gazull, Aldo Gonzalez-Lorenzo, Alexandra Bac. Measuring Holes of 3D Meshes. GTMG, Mar 2021, Distanciel, France. ⟨hal-03650377⟩
  • Jules Morel, Alexandra Bac, Takashi Kanai. Digital Terrain Model From UAV Photogrammetric Data. Smart Tools and Applications in Graphics (STAG), Nov 2020, Firenze, Italy. ⟨hal-03418438⟩
  • Jules Morel, Alexandra Bac, Takashi Kanai. High Accuracy Terrain Reconstruction from Point Clouds Using Implicit Deformable Model. ICCS, Jun 2020, Amsterdam, Netherlands. ⟨hal-03418436⟩
  • Jules Morel, Alexandra Bac, Cedric Vega. Surface reconstruction of incomplete datasets: a novel Poisson surface approach based on CSRBF. Paper presented at the Shape Modelling International (SMI 2018) Symposium, Instituto Superior Técnico, University of Lisbon, Jun 2018, Lisbo, Portugal. ⟨hal-02902826⟩
  • Aldo Gonzalez-Lorenzo, Alexandra Bac, Jean-Luc Mari. Opening Holes in Discrete Objects with Digital Homotopy. 20th IAPR International Conference on Discrete Geometry for Computer Imagery (DGCI 2017), Sep 2017, Vienne, Austria. pp.213--224, ⟨10.1007/978-3-319-66272-5_18⟩. ⟨hal-01698847⟩
  • Joris Ravaglia, Alexandra Bac, Richard A Fournier. Extraction of tubular shapes from dense point clouds and application to tree reconstruction from laser scanned data. Shape Modeling International, Jun 2017, Berkeley, United States. ⟨hal-01685231⟩
  • Joris Ravaglia, Alexandra Bac, Richard A Fournier. Anisotropic Octrees: a Tool for Fast Normals Estimation on Unorganized Point Clouds. WSCG, May 2017, Plzen, Czech Republic. ⟨hal-01690397⟩
  • Richard A Fournier, Jean-François Côté, Joris Ravaglia, Ulysse Rémillard, Olivier Martin-Ducup, et al.. The use of terrestrial LiDAR for enhanced forest inventory. Earth Observation Summit, 2017, Montréal, Canada. ⟨hal-02080481⟩
  • Alexandra Bac, Alexis Ben-Miloud, Axel Rozo-Brezillac. Importing cooperative pedagogy into postgraduate courses - an experiment. Future Of Education - FOE, Jun 2016, Florence, Italy. ⟨hal-01380181⟩
  • Asmae Dahrabou, Sophie Viseur, Aldo Gonzalez-Lorenzo, Jeremy Rohmer, Alexandra Bac, et al.. Topological Comparisons of Fluvial Reservoir Rock Volumes Using Betti Numbers: Application to CO2 Storage Uncertainty Analysis. 6th International Workshop on Computational Topology in Image Context (CTIC 2016), Jun 2016, Marseille, France. pp.101-112, ⟨10.1007/978-3-319-39441-1_10⟩. ⟨hal-01341013⟩
  • Aldo Gonzalez-Lorenzo, Mateusz Juda, Alexandra Bac, Jean-Luc Mari, Pedro Real. Fast, Simple and Separable Computation of Betti Numbers on Three-dimensional Cubical Complexes. 6th International Workshop on Computational Topology in Image Context (CTIC 2016), Jun 2016, Marseille, France. pp.130-139, ⟨10.1007/978-3-319-39441-1_12⟩. ⟨hal-01341014⟩
  • Aldo Gonzalez-Lorenzo, Alexandra Bac, Jean-Luc Mari, Pedro Real. Two Measures for the Homology Groups of Binary Volumes. 19th IAPR International Conference on Discrete Geometry for Computer Imagery (DGCI 2016), Apr 2016, Nantes, France. pp.154-165, ⟨10.1007/978-3-319-32360-2_12⟩. ⟨hal-01341015⟩
  • Aldo Gonzalez-Lorenzo, Alexandra Bac, Jean-Luc Mari, Pedro Real. Mesures géométriques pour les groupes d’homologie : vers une adaptation aux complexes simpliciaux. Journées du Groupe de Travail en Modélisation géométrique (GTMG 2016), Mar 2016, Dijon, France. pp.12-15. ⟨hal-01476541⟩
  • Aldo Gonzalez-Lorenzo, Alexandra Bac, Jean-Luc Mari, Pedro Real. Two new measures for the homology groups of discrete objects. Journées du Groupement de Recherche "Informatique Mathématique" (GdR IM), 2016, Villetaneuse, France. ⟨hal-01381805⟩
  • Jules Morel, Alexandra Bac, Cédric Vega. Computation of tree volume from terrestrial LiDAR data. MMT, Dec 2015, Sydney, Australia. pp.53--59. ⟨hal-01381812⟩
  • Jules Morel, Alexandra Bac, Cédric Vega. Computation of tree volume from terrestrial LiDAR data. SILVILASER, Sep 2015, La Grande Motte, France. pp.308--310. ⟨hal-01381791⟩
  • Joris A Ravaglia, Alexandra Bac, Richard A Fournier. Tree stem reconstruction from terrestrial laser scanner point cloud using Hough transform and open active contours. Silvilaser 2015, Sep 2015, La Grande Motte, France. ⟨hal-01376470⟩
  • Aldo Gonzalez-Lorenzo, Alexandra Bac, Jean-Luc Mari, Pedro Real. Cellular Skeletons: a New Approach to Topological Skeletons with Geometric Features. 16th International Conference on Computer Analysis of Images and Patterns (CAIP 2015), Sep 2015, La Valette, Malta. pp.616-627, ⟨10.1007/978-3-319-23117-4_53⟩. ⟨hal-01341037⟩
  • Alexandra Bac, Jules Morel, Cédric Vega. Forest carbon assessment from LiDAR 3D point cloud analysis. RFCC - Regional Forum on Climate Change, Jul 2015, Bandkok, Thailand. ⟨hal-01381790⟩
  • Joris Ravaglia, Alexandra Bac, Richard A Fournier. Modélisation de tiges d'arbres à partir de contours actifs. GTMG 2015, Apr 2015, Poitiers, France. ⟨hal-01376474⟩
  • Asmae Dahrabou, Sophie Viseur, Aldo Gonzalez-Lorenzo, Jean-Luc Mari, Alexandra Bac, et al.. Topological comparisons of fluvial reservoir rock volumes using Betti numbers: application to CO2 storage uncertainty analysis. 35th gOcad Meeting, 2015, Nancy, France. ⟨hal-01341016⟩
  • Aldo Gonzalez-Lorenzo, Alexandra Bac, Jean-Luc Mari, Pedro Real. Fast computation of Betti numbers on three-dimensional cubical complexes. Applications of Computer Algebra (ACA 2015), 2015, Kalamata, Greece. ⟨hal-01341017⟩
  • Aldo Gonzalez Lorenzo, Alexandra Bac, Jean-Luc Mari, Pedro Real. Homological Discrete Vector Fields and homotopy equivalence. Applications of Computer Algebra (ACA 2015), 2015, Kalamata, Greece. ⟨hal-01499699⟩
  • Aldo Gonzalez-Lorenzo, Alexandra Bac, Jean-Luc Mari, Pedro Real. Computing Homological Information Based on Directed Graphs within Discrete Objects. 16th International Symposium on Symbolic and Numeric Algorithms for Scientific Computing (SYNASC 2014), Sep 2014, Timisoara, Romania. pp.571--578, ⟨10.1109/SYNASC.2014.82⟩. ⟨hal-01381797⟩
  • Alexandra Bac, Joris Ravaglia, Richard A Fournier. Spatial vegetation density index from terrestrial laser scanner : a continuous approach applied to forestry. IGARSS, Jul 2014, Québec, Canada. ⟨hal-01381800⟩
  • Joris Ravaglia, Alexandra Bac, Richard A Fournier. Segmentation de nuages de points par octrees et analyse en composantes principales. GTMG 2014, Mar 2014, Lyon, France. ⟨hal-01376473⟩
  • Van-Sinh Nguyen, Alexandra Bac, Marc Daniel. Triangulation of an elevation surface structured by a sparse 3D grid. The Fifth IEEE International Conference on Communications and Electronics IEEE ICCE 2014, 2014, DaNang, Vietnam. pp.464-469. ⟨hal-01311428⟩
  • Alexandra Bac, Jean-Luc Mari, Dimitri Kudelski, van Tran Nam, Sophie Viseur, et al.. Application of discrete curvatures to surface mesh simplification and feature line extraction. Discrete Curvature - Theory and Applications, a colloquium on discrete curvature, Nov 2013, Marseille, France. ⟨hal-01311433⟩
  • Joris Ravaglia, Alexandra Bac, Alexandre Piboule. Laser-scanned tree stem filtering for forest inventories measurements. Digital Heritage, Oct 2013, Marseille, France. pp.649 - 652, ⟨10.1109/DigitalHeritage.2013.6743809⟩. ⟨hal-01376465⟩
  • Van-Sinh Nguyen, Alexandra Bac, Marc Daniel. Simplification of 3D point clouds sampled from elevation surfaces. 21th International Conference on Computer Graphics, Visualization and Computer Vision, WSCG2013, 2013, Plenz, Czech Republic. pp.60-69. ⟨hal-01311430⟩
  • Van-Sinh Nguyen, Alexandra Bac, Marc Daniel. Boundary Extraction and Simplification of a Surface Defined by a Sparse 3D Volume. Proceeding of the third international symposium on information and communication technology SoICT 2012, 2012, Ha Long, Vietnam. pp.115-124. ⟨hal-01311438⟩
  • Alexandra Bac, Marc Daniel, Rainaud J.F., van Tran Nam. Surface Improvement for Reservoir Modelling. MAMERN 2009, 2009, Unknown, Unknown Region. pp.163--167. ⟨hal-01311451⟩
  • Alexandra Bac, van Tran Nam, Marc Daniel. A multistep approach to restoration of locally undersampled meshes. GMP, Apr 2008, Langzhou, China. ⟨hal-01381807⟩
  • Alexandra Bac, van Tran Nam, Marc Daniel. A hybrid simplification algorithm for triangular meshes. GraphiCon'2007, 2007, Moscou, Unknown Region. pp.17--24. ⟨hal-01311455⟩
  • Raphaël La Greca, Marc Daniel, Alexandra Bac. Controlled Local Deformation of NURBS Surfaces to Satisfy Several Punctual Constraints. Curves and Surfaces, 2006, Avignon, France. ⟨hal-01311460⟩
  • van Tran Nam, Alexandra Bac, Marc Daniel. Une méthode hybride de simplification de maillages triangulaires. GTMG 2006, 2006, Unknown, Région indéterminée. ⟨hal-01311383⟩
  • Alexandra Bac, van Tran Nam, Marc Daniel, Michel Perrin. Traitement de surfaces géologiques pour la construction de modèles 3D. GTMG 2005, 2005, Unknown, Région indéterminée. ⟨hal-01311385⟩

Poster de conférence1 document

  • Joris Ravaglia, Alexandra Bac, Richard A Fournier. Spatial vegetation density index from terrestrial laser scanner. IEEE Geoscience and Remote Sensing Society (IGARSS), Jul 2014, Québec, Canada. ⟨hal-01376468⟩

Proceedings/Recueil des communications1 document

  • Alexandra Bac, Jean-Luc Mari. Computational Topology in Image Context. Alexandra Bac; Jean-Luc Mari. CTIC 2016, Jun 2016, Marseille, France. 9667, Springer, 2016, Lecture Notes in Computer Science, 978-3-319-39441-1. ⟨10.1007/978-3-319-39441-1⟩. ⟨hal-01340790⟩

Chapitres d'ouvrage3 documents

  • Alexandra Bac, Marc Daniel, van Tran Nam. Individual surface representations and optimization. Editions Technip. Shared Earth Modeling: Knowledge driven solutions for building and managing subsurface 3D geological models, pp.95-113, 2013. ⟨hal-01288312⟩
  • Alexandra Bac, van Tran Nam, Marc Daniel. A Multistep Approach to Restoration of Locally Undersampled Meshes. F. Chen and B. Jüttler. Advances in Geometric Modeling and Applications, pp.272-289, 2008. ⟨hal-01288313⟩
  • Raphaël La Greca, Marc Daniel, Alexandra Bac. Local Deformation of NURBS Curves. Nashboro Press. Mathematical Methods for Curves and Surfaces: Tromso 2004, 0--9728482-4-X, pp.243--252, 2005. ⟨hal-01288315⟩

Rapports1 document

  • Raphaël La Greca, Marc Daniel, Alexandra Bac. Satisfying Constraints Through Local Deformation of NURBS Curves. [Rapport de recherche] LSIS.RR.2004.006, Laboratoire des Sciences de l\'Information et des Syst\èmes. 2004. ⟨hal-01488865⟩

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