Listar por autoría "cc5ebb70-f8df-48eb-bb3e-e7a8538881b1"

Mostrando ítems 1-13 de 13

    • openAccess   A fast approach for perceptually-based fitting strokes into elliptical arcs 

      Company, Pedro; Plumed, Raquel; Varley, Peter Ashley Clifford Springer (2015-04-30)
      Fitting elliptical arcs to strokes of an input sketch is discussed. We describe an approach which automatically combines existing algorithms to get a balance of speed and precision. For measuring precision, we introduce ...

    • openAccess   A method for reconstructing sketched polyhedral shapes with rounds and fillets 

      Company, Pedro; Varley, Peter Ashley Clifford Springer International Publishing AG, Part of Springer Science+Business Media (2010)
      In this paper we present a method for detecting rounds and fillets in engineering sketches and drawings, and automatically generating a 3D model of the corresponding object, with rounds and fillets applied. This method ...

    • closedAccess   A new algorithm for finding faces in wireframes 

      Varley, Peter Ashley Clifford; Company, Pedro Elsevier (2010)
      The problem of identifying the topology implied by wireframe drawings of polyhedral objects requires the identification of face loops, loops of edges which correspond to a face in the object the drawing portrays. In this ...

    • openAccess   An Algorithm for Grouping Lines Which Converge to Vanishing Points in Perspective Sketches of Polyhedra 

      Company, Pedro; Varley, Peter Ashley Clifford; Plumed, Raquel Bart Lamiroy & Jean-Marc Ogier (2014)
      We seek to detect the vanishing points implied by design sketches of engineering products. Adapting previous ap- proaches, developed in computer vision for analysis of vectorised photographic images, is unsatisfactory, as ...

    • openAccess   Automatic terrain generation with a sketching tool 

      Puig Centelles, Anna; Varley, Peter Ashley Clifford; Ripollés Mateu, Oscar Enrique; Chover, Miguel Springer (2014)
      Nowadays, applications such as scientific simulations, virtual reality or computer games are increasing the detail of their environments with the aim of offering more realism. Terrain is a very important element in these ...

    • openAccess   Comments on "what the back of the object looks like: 3D reconstruction from line drawings without hidden lines" 

      Varley, Peter Ashley Clifford Institute of Electrical and Electronics Engineers (2009-08)
      I comment on a paper describing a method for deducing the hidden topology of an object portrayed in a 2D natural line drawing. The principal problem with this paper is that it cannot be considered an advance on (or even ...

    • closedAccess   Computer-aided sketching as a tool to promote innovation in the new product development process 

      Company, Pedro; Contero, Manuel; Varley, Peter Ashley Clifford; Aleixos, Nuria; Naya, Ferran Elsevier (2009)
      Sketching is an established part of engineering culture. Sketches assist product designers during the creative stages of design and help them to develop inventions. Paper-and-pencil sketching is highly useful but lacks ...

    • openAccess   CSG Feature Trees from Engineering Sketches of Polyhedral Shapes 

      Plumed, Raquel; Varley, Peter Ashley Clifford; Company, Pedro Eric Galin and Michael Wand (2014)
      We investigate the problem of determining design intent from engineering sketches: what did the designer have in mind when sketching a component? Specifically, we consider the unidirectional reverse mapping from form ...

    • openAccess   Features and design intent in engineering sketches 

      Plumed, Raquel; Varley, Peter Ashley Clifford; Company, Pedro ©Springer-Verlag Berlin Heidelberg (2013)
      We investigate the problem of determining design intent from engineering sketches: what did the designer have in mind when sketching a component? Specifically, we consider the unidirectional reverse mapping from form ...

    • openAccess   Human perception in segmentation of sketches 

      Company, Pedro; Varley, Peter Ashley Clifford; Piquer, Ana; Vergara, Margarita; Sánchez-Rubio Ruiz, Jaime Springer Berlin Heidelberg (2010)
      In this paper, we study the segmentation of sketched engineering drawings into a set of straight and curved segments. Our immediate objective is to produce a benchmarking method for segmentation algorithms. The criterion ...

    • openAccess   Metrics of human perception of vanishing points in perspective sketches 

      Plumed, Raquel; Company, Pedro; Varley, Peter Ashley Clifford Oliviera, Manuel M.; Skala, Václav (2013)
      This paper describes an experiment aimed at discovering how humans perceive vanishing points depicted in perspective sketches of engineering shapes. The goal is to find criteria and metrics for an algorithmic approach to ...

    • openAccess   Perceiving ribs in single-view wireframe sketches of polyhedral shapes 

      Company, Pedro; Varley, Peter Ashley Clifford; Plumed, Raquel; Martin, Ralph © Springer International Publishing (2012)
      As part of a strategy for creating 3D models of engineering objects from sketched input, we attempt to identify design features, geometrical structures within objects with a functional meaning. Our input is a 2D B-Rep ...

    • openAccess   Perimeter detection in sketched drawings of polyhedral shapes 

      Company, Pedro; Varley, Peter Ashley Clifford; Plumed, Raquel The Eurographics Association (2017)
      This paper describes a new “envelope” approach for detecting object perimeters in line-drawings vectorised from sketches of polyhedral objects. Existing approaches for extracting contours from digital images are unsuitable ...