Now showing items 1-20 of 23

    • Volume Painter: Geometry-Guided Volume Modeling by Sketching on the Cross-Section 

      Owada, Shigeru; Harada, Takahiro; Holzer, Philipp; Igarashi, Takeo (The Eurographics Association, 2008)
      We propose a sketch-based system to design volume data from scratch. The user splits a surface model and paints brush strokes to volumetrically fill the 3D space. We extend exisiting sketch-based modeling systems in various ...
    • Supporting Reinterpretation in Computer-Aided Conceptual Design 

      Jowers, Iestyn; Prats, Miquel; Lim, Sungwoo; McKay, Alison; Garner, Steve; Chase, Scott (The Eurographics Association, 2008)
      This paper presents research that aims to inform the development of computational tools that better support design exploration and idea transformation - key objectives in conceptual design. Analyses of experimental data ...
    • ShortStraw: A Simple and Effective Corner Finder for Polylines 

      Wolin, Aaron; Eoff, Brian; Hammond, Tracy (The Eurographics Association, 2008)
      In this paper we introduce ShortStraw, a simple and highly accurate polyline corner finder. ShortStraw uses a bottom-up approach to find corners by: (1) resampling the points of the stroke, (2) calculating the straw ...
    • From Paper to Machine: Extracting Strokes from Images for use in Sketch Recognition 

      Rajan, Pankaj; Hammond, Tracy (The Eurographics Association, 2008)
      Sketching is a way of conveying ideas to people of diverse backgrounds and culture without any linguistic medium. With the advent of inexpensive tablet PCs, online sketches have become more common, allowing for stroke-based ...
    • SOUSA: Sketch-based Online User Study Applet 

      Paulson, Brandon; Wolin, Aaron; Johnston, Joshua; Hammond, Tracy (The Eurographics Association, 2008)
      Although existing domain-specific datasets are readily available, most sketch recognition researchers are forced to collect new data for their particular domain. Creating tools to collect and label sketched data can take ...
    • Rapid Sketch Modeling of Clouds 

      Wither, Jamie; Bouthors, Antoine; Cani, Marie-Paule (The Eurographics Association, 2008)
      Clouds are an important visual element of any natural scene and computer artists often wish to create specific cloud shapes (for example in the film Amélie, as depicted in Fig 1). We describe a sketch based interface for ...
    • CogSketch: Open-domain Sketch Understanding for Cognitive Science Research and for Education 

      Forbus, Kenneth; Usher, Jeffrey; Lovett, Andrew; Lockwood, Kate; Wetzel, Jon (The Eurographics Association, 2008)
      In this paper, we describe CogSketch, an open-domain sketch understanding system built on the nuSketch architecture. CogSketch captures the multi-modal, unconstrained nature of sketching by focusing on reasoning over ...
    • Using Sketches and Retrieval to Create LEGO Models 

      Santos, Tiago; Ferreira, Alfredo; Dias, Filipe; Fonseca, Manuel J. (The Eurographics Association, 2008)
      In this paper we describe a system to create LEGO models using sketches. Although there are a few applications to create LEGO models, they are difficult to use, mainly due to the searching and manipulation mechanisms that ...
    • Sketch-based Parameterization of L-systems using Illustration-inspired Construction Lines 

      Anastacio, Fabricio; Prusinkiewicz, P.; Sousa, Mario Costa (The Eurographics Association, 2008)
      We present a sketch-based interface for parameter control of rule-based models. It allows intuitive specification and creation of plant structures with L-systems. Construction lines inspired by concept sketches are employed ...
    • Sketching Piecewise Clothoid Curves 

      McCrae, James; Singh, Karan (The Eurographics Association, 2008)
      We present a novel approach to sketching 2D curves with minimally varying curvature as piecewise clothoids. A stable and efficient algorithm fits a sketched piecewise linear curve using a number of clothoid segments with ...
    • Repoussé: Automatic Inflation of 2D Artwork 

      Joshi, Pushkar; Carr, Nathan A. (The Eurographics Association, 2008)
      We describe a new system for the interactive enhancement of 2D art with 3D geometry. Repoussé creates a 3D shape by inflating the surface that interpolates the input curves. By using the mean curvature stored at boundary ...
    • Matisse: Painting 2D regions for Modeling Free-Form Shapes 

      Bernhardt, Adrien; Pihuit, Adeline; Cani, Marie-Paule; Barthe, Loic (The Eurographics Association, 2008)
      This paper presents Matisse, an interactive modeling system aimed at providing the public with a very easy way to design free-form 3D shapes. The user progressively creates a model by painting 2D regions of arbitrary ...
    • MathBrush: A Case Study for Pen-based Interactive Mathematics 

      Labahn, George; Lank, Edward; Marzouk, Mirette; Bunt, Andrea; MacLean, Scott; Tausky, David (The Eurographics Association, 2008)
      Current generations of computer algebra systems require users to transform two dimensional math expressions into one dimensional strings, to master complex sets of commands, and to analyze lengthy output strings for relevant ...
    • Paper-based Scribble Simplification:Where Do We Stand? 

      Bartolo, Alexandra; Camilleri, Kenneth P.; Fabri, Simon G.; Borg, Jonathan C. (The Eurographics Association, 2008)
      This paper presents a formal evaluation of the paper-based scribble simplification algorithm described in [BCFB07] and [BCFB08]. A comparative analysis of different aspects of the algorithm with other algorithms described ...
    • A Data Collection Tool for Sketched Diagrams 

      Blagojevic, Rachel; Plimmer, Beryl; Grundy, John; Wang, Yong (The Eurographics Association, 2008)
      Repositories of digital ink sketches would be invaluable for testing and evaluation of sketch recognition software. However, there is no existing tool for flexible data collection and management of digital ink data for ...
    • Investigating User Requirements and Usability of Immersive Three-dimensional Sketching for Early Conceptual Design - Results from Expert Discussions and User Studies 

      Israel, Johann Habakuk; Zöllner, Christian; Mateescu, Magda; Korkot, Rasim; Bittersmann, Gunnar; Fischer, Patrick Tobias; Neumann, Jens; Stark, Rainer (The Eurographics Association, 2008)
      As immersive 3-d user interfaces reach broader acceptance, their use as sketching media is attracting both commercial and academic research. So far little is known about user requirements and cognitive aspects of immersive ...
    • Automatic Interpretation of Depiction Conventions in Sketched Diagrams 

      Lockwood, Kate; Lovett, Andrew; Forbus, Ken; Dehghani, Morteza; Usher, Jeff (The Eurographics Association, 2008)
      Diagrams are used in many educational settings to convey physical and spatial information. Sketching is used, in turn, to test students' understanding of course concepts. The availability of Tablet PCs offer an exciting ...
    • An Empirical Study in Pen-Centric User Interfaces: Diagramming 

      Forsberg, Andrew S.; Bragdon, Andrew; Jr., Joseph J. LaViola; Raghupathy, Sashi; Zeleznik, Robert C. (The Eurographics Association, 2008)
      We present a user study aimed at helping understand the applicability of pen-computing in desktop environments. The study applied three mouse-and-keyboard-based and three pen-based interaction techniques to six variations ...
    • Sketch-Based Search and Composition of 3D Models 

      Lee, Jeehyung; Funkhouser, Thomas (The Eurographics Association, 2008)
      There is growing interest in developing tools with which novice users can create detailed 3D models of their own designs. The most popular approaches to this problem include sketch-based interfaces and part-composition ...
    • Sketching Faces 

      Gunnarsson, Orn; Maddock, Steve (The Eurographics Association, 2008)
      Faces can be modelled using a number of techniques. Existing faces can be transferred to a digital form using equipment such as laser scanners. New faces can be constructed using commercial modelling tools, or using ...