Point-normal convexity preserving curve interpolation.

Nickolas S. Sapidis Nickolaos Sapidis

Nikolaos C. Gabrielides Nickolas S. Sapidis Point-normal convexity preserving curve interpolation. 103836 2025 180 Comput. Aided Des. https://doi.org/10.1016/j.cad.2024.103836 db/journals/cad/cad180.html#GabrielidesS25 streams/journals/cad

Ioannis Mikrou Nickolas S. Sapidis A Systematic Evaluation of Clustering Algorithms Against Expert-Derived Clustering. 55 2025 June 6 Oper. Res. Forum 2 https://doi.org/10.1007/s43069-025-00453-w db/journals/orf/orf6.html#MikrouS25 streams/journals/orf

Ioannis Mikrou Nickolas S. Sapidis Enhancing operational research in mechatronic systems via modularization: comparative analysis of four clustering algorithms using validation indices. 63 2024 December 24 Oper. Res. 4 https://doi.org/10.1007/s12351-024-00872-3 db/journals/or/or24.html#MikrouS24 streams/journals/or

Jarek Rossignac Nickolas S. Sapidis Vadim Shapiro Special Issue in the Memory of Herb Voelcker. 103508 2023 June 159 Comput. Aided Des. https://doi.org/10.1016/j.cad.2023.103508 db/journals/cad/cad159.html#RossignacSS23

Nikolaos C. Gabrielides Nickolas S. Sapidis Numerical Shape Interrogation of Planar Generalized Cubic Curves. 103234 2022 146 Comput. Aided Des. https://doi.org/10.1016/j.cad.2022.103234 db/journals/cad/cad146.html#GabrielidesS22

Nikolaos C. Gabrielides Nickolas S. Sapidis Shape Analysis of Generalized Cubic Curves. 102849 2020 125 Comput. Aided Des. https://doi.org/10.1016/j.cad.2020.102849 db/journals/cad/cad125.html#GabrielidesS20

Nikolaos C. Gabrielides Nickolas S. Sapidis Inflection points on 3D curves. 101932 2020 82 Comput. Aided Geom. Des. https://doi.org/10.1016/j.cagd.2020.101932 db/journals/cagd/cagd82.html#GabrielidesS20

Nikolaos C. Gabrielides Nickolas S. Sapidis Cubic polynomial and cubic rational C1 sign, monotonicity and convexity preserving Hermite interpolation. 184-203 2019 357 J. Comput. Appl. Math. https://doi.org/10.1016/j.cam.2019.02.024 db/journals/jcam/jcam357.html#GabrielidesS19

Nikolaos C. Gabrielides Nickolas S. Sapidis C1 sign, monotonicity and convexity preserving Hermite polynomial splines of variable degree. 662-707 2018 343 J. Comput. Appl. Math. https://doi.org/10.1016/j.cam.2018.03.020 db/journals/jcam/jcam343.html#GabrielidesS18

Kewei Chen 0001 Nikolaos C. Gabrielides Nickolas S. Sapidis Ramon F. Sarraga Timothy Strotman Hans Wolters Zhiyong (Sean) Xie A CAD Tribute to Gerald Farin. 1-5 2016 80 Comput. Aided Des. https://doi.org/10.1016/j.cad.2016.07.007 db/journals/cad/cad80.html#ChenGSSSWX16

Iraklis Chatziparasidis Nickolas S. Sapidis Automatic Assembly Design for Engineering-to-Order Products Based on Multiple Models and Assembly Features. 261-274 2016 PLM https://doi.org/10.1007/978-3-319-54660-5_24 conf/ifip5-1/2016 db/conf/ifip5-1/plm2016.html#Chatziparasidis16

Frederic Cordier Hyewon Seo Mahmoud Melkemi Nickolas S. Sapidis Inferring mirror symmetric 3D shapes from sketches. 301-311 2013 45 Comput. Aided Des. 2 https://doi.org/10.1016/j.cad.2012.10.013 db/journals/cad/cad45.html#CordierSMS13

Mahmoud Melkemi Frederic Cordier Nickolas S. Sapidis A Provable Algorithm to Detect Weak Symmetry in a Polygon. 2013 13 Int. J. Image Graph. 1 https://doi.org/10.1142/S0219467813500022 db/journals/ijig/ijig13.html#MelkemiCS13

Sofia Kyratzi Nickolas S. Sapidis 3D Object Modeling using Sketches. 27-49 2011 24 Inf. Resour. Manag. J. 4 https://doi.org/10.4018/irmj.2011100102 db/journals/irmj/irmj24.html#KyratziS11

Mahmoud Melkemi Frederic Cordier Nickolas S. Sapidis An Algorithm to Detect the Weak-Symmetry of a Simple Polygon. 365-374 2011 ICIAR (1) https://doi.org/10.1007/978-3-642-21593-3_37 conf/iciar/2011-1 db/conf/iciar/iciar2011-1.html#MelkemiCS11

Markos A. Petousis Nickolas Bilalis Nickolas S. Sapidis A virtual reality system for the determination of critical machining-process parameters. 75-88 2010 1 Int. J. Intell. Eng. Informatics 1 https://doi.org/10.1504/IJIEI.2010.033530 db/journals/ijiei/ijiei1.html#PetousisBS10

Alexander Agathos Ioannis Pratikakis Stavros J. Perantonis Nickolas S. Sapidis Protrusion-oriented 3D mesh segmentation. 63-81 2010 26 Vis. Comput. 1 https://doi.org/10.1007/s00371-009-0383-8 db/journals/vc/vc26.html#AgathosPPS10

Alexander Agathos Ioannis Pratikakis Panagiotis Papadakis Stavros J. Perantonis Phillip N. Azariadis Nickolas S. Sapidis 3D articulated object retrieval using a graph-based representation. 1301-1319 2010 26 Vis. Comput. 10 https://doi.org/10.1007/s00371-010-0523-1 db/journals/vc/vc26.html#AgathosPPPAS10

Sofia Kyratzi Nickolas S. Sapidis Extracting a polyhedron from a single-view sketch: Topological construction of a wireframe sketch with minimal hidden elements. 270-279 2009 33 Comput. Graph. 3 https://doi.org/10.1016/j.cag.2009.03.001 db/journals/cg/cg33.html#KyratziS09

Sofia Kyratzi Nickolas S. Sapidis From sketch to solid: an algebraic cross-section criterion for the realizability of a wireframe sketch. 219-234 2009 86 Computing 2-3 https://doi.org/10.1007/s00607-009-0058-3 db/journals/computing/computing86.html#KyratziS09

Alexander Agathos Ioannis Pratikakis Panagiotis Papadakis Stavros J. Perantonis Phillip N. Azariadis Nickolas S. Sapidis Retrieval of 3D Articulated Objects Using a Graph-based Representation. 29-36 2009 3DOR@Eurographics https://doi.org/10.2312/3DOR/3DOR09/029-036 conf/3dor/2009 db/conf/3dor/3dor2009.html#AgathosPPPAS09 Sofia Kyratzi Nickolas S. Sapidis An interactive sketching method for 3D object modeling. 335-342 2008 DIMEA https://doi.org/10.1145/1413634.1413695 conf/dimea/2008 db/conf/dimea/dimea2008.html#KyratziS08 Stavros J. Perantonis Nickolas S. Sapidis Michela Spagnuolo Daniel Thalmann 1st Eurographics Workshop on 3D Object Retrieval, 3DOR@Eurographis 2008, Hersonissos, Crete, Greece, April 15, 2008 3DOR@Eurographics 2008 978-3-905674-05-7 Eurographics Association http://diglib.eg.org/handle/10.2312/313 db/conf/3dor/3dor2008.html

Phillip N. Azariadis Nickolas S. Sapidis Product design using point-cloud surfaces: A recursive subdivision technique for point parameterization. 832-843 2007 58 Comput. Ind. 8-9 https://doi.org/10.1016/j.compind.2007.03.001 db/journals/cii/cii58.html#AzariadisS07

Nickolas S. Sapidis Geometric modeling of spatial constraints: objectives, methods and solid-modeling requirements. 337-352 2007 79 Computing 2-4 https://doi.org/10.1007/s00607-006-0210-2 db/journals/computing/computing79.html#Sapidis07

Mourad Djebali Mahmoud Melkemi Kamal E. Melkemi Nickolas S. Sapidis Coiflet Based Methods for Range Image Processing. 321-351 2007 7 Int. J. Image Graph. 2 https://doi.org/10.1142/S0219467807002672 db/journals/ijig/ijig7.html#DjebaliMMS07

Phillip N. Azariadis Nickolas S. Sapidis Drawing curves onto a cloud of points for point-based modelling. 109-122 2005 37 Comput. Aided Des. 1 https://doi.org/10.1016/j.cad.2004.05.004 db/journals/cad/cad37.html#AzariadisS05

Nickolas S. Sapidis A thorough encyclopaedia on geometric modelling, its foundations, methods and applications: Handbook of computer aided geometric design, Gerald Farin, Josef Hoschek, Myung-Soo Kim. 137 2005 37 Comput. Aided Des. 1 https://doi.org/10.1016/j.cad.2004.05.002 db/journals/cad/cad37.html#Sapidis05

Phillip N. Azariadis Nickolas S. Sapidis Efficient Parameterization of 3D Point-Sets Using Recursive Dynamic Base Surfaces. 296-306 2005 conf/pci/2005 Panhellenic Conference on Informatics https://doi.org/10.1007/11573036_28 db/conf/pci/pci2005.html#AzariadisS05

Gabriel Theodosiou Nickolas S. Sapidis Information models of layout constraints for product life-cycle management: a solid-modelling approach. 549-564 2004 36 Comput. Aided Des. 6 https://doi.org/10.1016/S0010-4485(03)00162-3 db/journals/cad/cad36.html#TheodosiouS04

Nickolas S. Sapidis Myung-Soo Kim Editorial to special issue: CAD education. 1429-1430 2004 36 Comput. Aided Des. 14 https://doi.org/10.1016/j.cad.2004.03.004 db/journals/cad/cad36.html#SapidisK04

Phillip N. Azariadis Nickolas S. Sapidis Planar Development of Free-Form Surfaces: Quality Evaluation and Visual Inspection. 13-27 2004 72 Computing 1-2 https://doi.org/10.1007/s00607-003-0043-1 db/journals/computing/computing72.html#AzariadisS04

Mourad Djebali Mahmoud Melkemi Nickolas S. Sapidis A Fit-and-Merge Algorithm for Range-Image Segmentation and Model Reconstruction. 285-293 2002 2 J. Comput. Inf. Sci. Eng. 4 https://doi.org/10.1115/1.1542637 db/journals/jcise/jcise2.html#DjebaliMS02

Gabriel Theodosiou Nickolas S. Sapidis Abdelaziz Bouras Information Models of Design Constraints for Collaborative Product Development. 207- 2002 conf/gmp/2002 GMP https://doi.org/10.1109/GMAP.2002.1027512 https://doi.ieeecomputersociety.org/10.1109/GMAP.2002.1027512 db/conf/gmp/gmp2002.html#TheodosiouSB02 Mourad Djebali Mahmoud Melkemi Nickolas S. Sapidis Range-Image segmentation and model reconstruction based on a fit-and-merge strategy. 127-138 2002 conf/sma/2002 Symposium on Solid Modeling and Applications https://doi.org/10.1145/566282.566303 db/conf/sma/sma2002.html#DjebaliMS02

Nickolas S. Sapidis Methods of Shape-Preserving Spline Approximation: Boris I. Kvasov World Scientific Publishing Co., Singapore, 2000, 356 pp, ISBN 981-02-4010-4. 747-748 2001 33 Comput. Aided Des. 10 https://doi.org/10.1016/S0010-4485(01)00062-8 db/journals/cad/cad33.html#Sapidis01

Nickolas S. Sapidis Gabriel Theodosiou Informationally-Complete Product Models of Complex Arrangements for Simulation-Based Engineering: Modelling Design Constraints using Virtual Solids. 147-161 2000 16 Eng. Comput. 3-4 http://www.springerlink.com/openurl.asp?genre=article&issn=0177-0667&volume=16&issue=3&spage=147 db/journals/ewc/ewc16.html#SapidisT00

Nickolas S. Sapidis Gabriel Theodosiou Planar domain simplification for modeling virtual-solids in plant and machinery layout. 597-610 1999 31 Comput. Aided Des. 10 https://doi.org/10.1016/S0010-4485(99)00048-2 db/journals/cad/cad31.html#SapidisT99

Nickolas S. Sapidis George D. Koras Visualization of curvature plots and evaluation of fairness: an analysis of the effect of 'scaling'. 299-311 1997 14 Comput. Aided Geom. Des. 4 https://doi.org/10.1016/S0167-8396(96)00034-9 db/journals/cagd/cagd14.html#SapidisK97

Panagiotis D. Kaklis Nickolas S. Sapidis Convexity-preserving interpolatory parametric splines of non-uniform polynomial degree. 1-26 1995 12 Comput. Aided Geom. Des. 1 https://doi.org/10.1016/0167-8396(93)E0053-G db/journals/cagd/cagd12.html#KaklisS95

Nickolas S. Sapidis Paul J. Besl Direct Construction of Polynomial Surfaces from Dense Range Images Through Region Growing. 171-200 1995 14 ACM Trans. Graph. 2 https://doi.org/10.1145/221659.221672 db/journals/tog/tog14.html#SapidisB95

Nickolas S. Sapidis Variable-Order Surface Reconstruction Through Region Growing. 207-218 1995 conf/dagstuhl/1995cad CAD Systems Development db/conf/dagstuhl/cad1995.html#Sapidis95

Panagiotis D. Kaklis Nickolas S. Sapidis Curvature-sign-type boundary conditions in parametric cubic-spline interpolation. 425-450 1994 11 Comput. Aided Geom. Des. 4 https://doi.org/10.1016/0167-8396(94)90207-0 db/journals/cagd/cagd11.html#KaklisS94

H. G. W. Burchard J. A. Ayers William H. Frey Nickolas S. Sapidis 1. Approximation with Aesthetic Constraints. 3-28 1994 Designing Fair Curves and Surfaces https://doi.org/10.1137/1.9781611971521.ch1 books/siam/94/S1994 db/books/collections/S1994.html#BurchardAFS94 Alexandros I. Ginnis Panagiotis D. Kaklis Nickolas S. Sapidis 10. Polynomial Splines of Nonuniform Degree: Controlling Convexity and Fairness. 253-274 1994 Designing Fair Curves and Surfaces https://doi.org/10.1137/1.9781611971521.ch10 books/siam/94/S1994 db/books/collections/S1994.html#GinnisKS94 Nickolas S. Sapidis Designing Fair Curves and Surfaces: Shape Quality in Geometric Modeling and Computer-Aided Design Designing Fair Curves and Surfaces SIAM 1994 Geometric Design Publications 978-0-89871-332-9 db/books/collections/S1994.html https://doi.org/10.1137/1.9781611971521 Nickolas S. Sapidis Panagiotis D. Kaklis A Hybrid Method for Shape-Preserving Interpolation with Curvature-Continuous Quintic Splines. 285-301 1993 conf/gm/1993 Geometric Modelling db/conf/gm/gm1993.html#SapidisK93

Nickolas S. Sapidis Renato Perucchio Solid/solid classification operations for recursive spatial decomposition and domain triangulation of solid models. 517-529 1992 24 Comput. Aided Des. 10 https://doi.org/10.1016/0010-4485(92)90039-D db/journals/cad/cad24.html#SapidisP92

Nickolas S. Sapidis William H. Frey Controlling the curvature of a quadratic Bézier curve. 85-91 1992 9 Comput. Aided Geom. Des. 2 https://doi.org/10.1016/0167-8396(92)90008-D db/journals/cagd/cagd9.html#SapidisF92

Nickolas S. Sapidis Renato Perucchio Delaunay triangulation of arbitrarily shaped planar domains. 421-437 1991 8 Comput. Aided Geom. Des. 6 https://doi.org/10.1016/0167-8396(91)90028-A db/journals/cagd/cagd8.html#SapidisP91

Nickolas S. Sapidis Renato Perucchio Domain Delaunay tetrahedrization of solid models. 299-325 1991 1 Int. J. Comput. Geom. Appl. 3 db/journals/ijcga/ijcga1.html#SapidisP91 https://doi.org/10.1142/S0218195991000219

Nickolas S. Sapidis Renato Perucchio Domain Delaunay Tetrahedrization of arbitrarily shaped curved polyhedra defined in a solid modeling system. 465-480 1991 conf/sma/1991 Symposium on Solid Modeling and Applications https://doi.org/10.1145/112515.112581 db/conf/sma/sma1991.html#SapidisP91

Nickolas S. Sapidis Gerald E. Farin Automatic fairing algorithm for B-spline curves. 121-129 1990 22 Comput. Aided Des. 2 https://doi.org/10.1016/0010-4485(90)90006-X db/journals/cad/cad22.html#SapidisF90

Gerald E. Farin Nickolas S. Sapidis Curvature and the fairness of curves and surfaces. 52-57 1989 9 IEEE Computer Graphics and Applications 2 https://doi.org/10.1109/38.19051 http://doi.ieeecomputersociety.org/10.1109/38.19051 db/journals/cga/cga9.html#FarinS89

Nickolas S. Sapidis Panagiotis D. Kaklis An algorithm for constructing convexity and monotonicity-preserving splines in tension. 127-137 1988 5 Comput. Aided Geom. Des. 2 https://doi.org/10.1016/0167-8396(88)90027-1 db/journals/cagd/cagd5.html#SapidisK88

Gerald E. Farin Gerhard Rein Nickolas S. Sapidis Andrew J. Worsey Fairing cubic B-spline curves. 91-103 1987 4 Comput. Aided Geom. Des. 1-2 https://doi.org/10.1016/0167-8396(87)90027-6 db/journals/cagd/cagd4.html#FarinRSW87

Alexander Agathos J. A. Ayers Phillip N. Azariadis Paul J. Besl Nickolas Bilalis Abdelaziz Bouras H. G. W. Burchard Iraklis Chatziparasidis Kewei Chen 0001 Frederic Cordier Mourad Djebali Gerald E. Farin William H. Frey Nikolaos C. Gabrielides Alexandros I. Ginnis Panagiotis D. Kaklis Myung-Soo Kim George D. Koras Sofia Kyratzi Kamal E. Melkemi Mahmoud Melkemi Ioannis Mikrou Panagiotis Papadakis Stavros J. Perantonis Renato Perucchio Markos A. Petousis Ioannis Pratikakis Gerhard Rein Jarek Rossignac Ramon F. Sarraga Hyewon Seo Vadim Shapiro Michela Spagnuolo Timothy Strotman Daniel Thalmann Gabriel Theodosiou Hans Wolters Andrew J. Worsey Zhiyong (Sean) Xie