Sketching space

Turner, Alasdair; Chapman, Dave; Penn, Alan

doi:10.1016/s0097-8493(00)00089-3

Cited by 27 publications

(31 citation statements)

References 24 publications

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“…Digital Clay [7] uses constraint propagation of concave and convex vertices to generate three-dimensional models from a two-dimensional diagram. Stilton [8] enables designers to draw into a three-dimensional scene represented in VRML; the program parses the line drawing on the fly to add 3-D geometry to the scene.…”

Section: Intelligent Sketching Systemsmentioning

confidence: 99%

Let There Be Light! Knowledge-Based 3-D Sketching Design Tools

Yi–Luen

Gross

2004

International Journal of Architectural Computing

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This paper presents a framework for 3D knowledgebased sketching tools for lighting design and two software prototypes built to illustrate sketch-based interaction with intelligent systems in 3-D domains. Spot supports direct sunlight simulation and visualization in a selected time period and Light Pen supports placement of electric lighting designs to light an intended area in space. In both examples, a 3-D sketching front-end is coupled with a back-end knowledge-based system.This enables a designer to pose a problem by drawing onto a 3-D model to which the knowledge-based system offers a solutionin one case by providing quantitative data analysis; in the other by modifying the 3-D model. Spot and Light Pen's specific domain of architectural lighting design exemplifies a more general class of 3-D interaction with intelligent systems. 212

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Section: Intelligent Sketching Systemsmentioning

confidence: 99%

Let There Be Light! Knowledge-Based 3-D Sketching Design Tools

Yi–Luen

Gross

2004

International Journal of Architectural Computing

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“…A number of publications have been devoted to this research in the major computer vision literature [8], [15], [20], [21], [22], [23], [25], [29], [30], [31], [32], [33]. The applications of this research include: flexible sketching input for conceptual designers who tend to prefer pencil and paper to mouse and keyboard [3], [19], [22]; providing rich databases to object recognition systems and reverse engineering algorithms for shape reasoning [2], [3]; automatic conversion of industrial wireframe models to solid models [2], [14]; interactive generation of 3D models from images [13], [20], [35]; friendly user interface for 3D object retrieval [5], [27] .…”

Section: Introductionmentioning

confidence: 99%

“…There have been a number of papers discussing 3D reconstruction from single 2D line drawings [6], [8], [15], [19], [20], [25], [28], [29], [30], [32], [33], [35], [36]. However, they handle only line drawings of planar objects.…”

Section: Introductionmentioning

confidence: 99%

3D reconstruction of curved objects from single 2D line drawings

Wang

Liu

Tang

2009

2009 IEEE Conference on Computer Vision and Pattern Recognition

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“…In this paper, we only deal with the face identification of 2D line drawings of manifold objects. For 3D geometry reconstruction, the reader is referred to references [1], [2], [3], [4], [5], [6], [7], [8].…”

Section: Introductionmentioning

confidence: 99%

“…1. Face identification from line drawings with hidden lines visible has many applications, which include 1. flexible sketching interface for conceptual designers who still tend to prefer pencil and paper to mouse and keyboard in current CAD systems [3], [12], 2. automatic conversion of existing industrial wireframe models to solid models [10], [12], [13], 3. providing rich databases (face topology) to object recognition systems or reverse engineering algorithms for shape reasoning [10], [12], and 4. interactive generation of 3D models from images [7], [8]. A line drawing with hidden lines visible makes it possible to reconstruct its complete 3D model.…”

Section: Introductionmentioning

confidence: 99%

Identifying faces in a 2D line drawing representing a manifold object

Liu

Lee

Cham

2002

IEEE Trans. Pattern Anal. Machine Intell.

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Abstract-A straightforward way to illustrate a 3D model is to use a line drawing. Faces in a 2D line drawing provide important information for reconstructing its 3D geometry. Manifold objects belong to a class of common solids and most solid systems are based on manifold geometry. In this paper, a new method is proposed for finding faces from single 2D line drawings representing manifolds. The face identification is formulated based on a property of manifolds: each edge of a manifold is shared exactly by two faces. The two main steps in our method are 1) searching for cycles from a line drawing and 2) searching for faces from the cycles. In order to speed up the face identification procedure, a number of properties, most of which relate to planar manifold geometry in line drawings, are presented to identify most of the cycles that are or are not real faces in a drawing, thus reducing the number of unknown cycles in the second searching. Schemes to deal with manifolds with curved faces and manifolds each represented by two or more disjoint graphs are also proposed. The experimental results show that our method can handle manifolds previous methods can handle, as well as those they cannot.

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Sketching space

Cited by 27 publications

References 24 publications

Let There Be Light! Knowledge-Based 3-D Sketching Design Tools

Let There Be Light! Knowledge-Based 3-D Sketching Design Tools

3D reconstruction of curved objects from single 2D line drawings

Identifying faces in a 2D line drawing representing a manifold object

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