Free-form sketching with variational implicit surfaces

Карпенко, Ольга Александровна; Hughes, John F.; Raskar, Ramesh

doi:10.1111/1467-8659.t01-1-00709

Cited by 97 publications

(41 citation statements)

References 19 publications

(19 reference statements)

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“…As in many other sketch-based modeling tools [3,18,20,25,28,42], the primary shape-creation operation in ShapeShop is inflation, where a closed 2D contour is then inflated into a "blobby" 3D shape. This operation can be easily accomplished using implicit sweeps with the blobby endcap style, as described in Sect.…”

Section: Blobby Inflationmentioning

confidence: 99%

“…Various other tools have explored implicit blending [3,20] or discrete fairing [25] in a sketch-based context. However, the style of dynamic implicit blending available in ShapeShop is highly useful in practice, and one of the features that professional 3D artists find most desirable when first being introduced to the system.…”

Section: Blendingmentioning

confidence: 99%

“…The latter seems particularly useful in a sketch-based tool, although it has yet to be integrated into ShapeShop. We also note that a variety of other approaches to implicit inflation have been explored, based on blending point primitives [1], 3D variational interpolation [3,20], and convolution surfaces [1,42]. The main limitation with all of these methods, including the technique described here, is that they produce continuous fields which cannot represent any sharp corners in the sketch.…”

Section: Sketchable Implicit Sweep Primitivesmentioning

confidence: 99%

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ShapeShop: Free-Form 3D Design with Implicit Solid Modeling

Schmidt¹,

Wyvill²

2011

Sketch-Based Interfaces and Modeling

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Implicit modeling has been used since the early 1980s as an alternative to mainstream solid-modeling techniques. Beyond Boolean composition, implicit modeling integrates blending and deformation operators which allow complex free-form solid models to be more easily described. Recent advances have alleviated some of the major technical problems, such as visualization speed and surface control. In this chapter we describe how to combine these new techniques with a sketchbased 3D modeling interface, resulting in a powerful tool for quickly creating solid models. Our system, called ShapeShop, has been used as a testbed to investigate a range of problems, from real-time visualization [36] . Sketch-based 3D modeling is the common thread which ties all these various problems together [33,34,37,46].Much like the seminal Teddy system [18], ShapeShop is a tool for incrementally creating a 3D model using simple 2D sketches. From this starting point, many other sketch and pen-based interaction techniques have been adapted and integrated into the system. ShapeShop borrows liberally from work in sketching assistance [7,17], gestural systems [48], crossing interfaces [2], and suggestive modeling [16]. One long-term aspect of the ShapeShop project is to evaluate how these non-traditional techniques can be effectively combined within a complex interface.

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Section: Blobby Inflationmentioning

confidence: 99%

Section: Blendingmentioning

confidence: 99%

Section: Sketchable Implicit Sweep Primitivesmentioning

confidence: 99%

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ShapeShop: Free-Form 3D Design with Implicit Solid Modeling

Schmidt¹,

Wyvill²

2011

Sketch-Based Interfaces and Modeling

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“…The SKETCH system is intended to sketch a scene consisting of simple primitives, such as boxes and cones, while the Teddy system is designed to create rotund objects with spherical topology. Although improvements to the original Teddy system have been recently proposed [14,15], extending the topological variety of creatable models is still an unsolved problem.…”

Section: Related Workmentioning

confidence: 99%

Topology-Consistent Design for 3D Freeform Meshes with Harmonic Interpolation

Sheng

2007

Entertainment Computing – ICEC 2007

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Abstract. One of the most exciting aspects of shape modeling is the development of new algorithms and methods to create unusual, interesting and aesthetically pleasing shapes. In this paper, we present an interactive modeling system for generating freeform surfaces using a 2D user interface. In this paper, we firstly interpret the given 2D curve to be the projection of the 3D curve that has the minimum curvature. Then we propose a topology-consistent strategy to trace the simple faces on the interconnecting 3D curves. By using the face tracing algorithm, our system can identify the 3D surfaces automatically. After obtaining the boundary curves for the faces, we apply Delaunay triangulation on these faces. Finally, the shape of the triangule surface mesh that follows the 3D boundary curves is computed by using harmonic interpolation. Solving Laplace's equations, we are able to construct simple and conceptual 3D models interactively. Although the incorporation of topological manipulation will introduce many new(and interesting) design problems that cannot be addressed in this paper, we show that automatically generated models are both beneficial and feasible.

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“…Later, Turk et al used an interpolating implicit surface as a shape transformation tool [8], both shape interpolation and feature specification are elegantly incorporated in one concise scattered data interpolation model. In addition to shape blending and surface reconstruction [8][9][10], interpolating implicit surfaces are also gaining acceptance in computer assisted surgical planning [11], complex surface modeling [12], mesh repairing [13] and sketching [14].…”

Section: Introductionmentioning

confidence: 99%

Subdivision interpolating implicit surfaces

Jin

Sun

Peng

2003

Computers & Graphics

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Interpolating implicit surfaces using radial basis functions can directly specify surface points and surface normals with closed form solutions, so they are elegantly used in surface reconstruction and shape morphing. This paper presents subdivision interpolating implicit surfaces, a new progressive subdivision tessellation scheme for interpolating implicit surfaces controlled by a triangular mesh with arbitrary topology. We use a recursive polyhedral subdivision scheme to subdivide the control triangular mesh, and the new generated vertices are mapped to the implicit surface using Newton iteration. A multiresolution surface representation is automatically built with the proposed approach. Based on this approach, a newly surface modeling tool with more flexible control is developed by blending the interpolating subdivision surfaces with the subdivision interpolating implicit surfaces. r

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Free-form sketching with variational implicit surfaces

Cited by 97 publications

References 19 publications

ShapeShop: Free-Form 3D Design with Implicit Solid Modeling

ShapeShop: Free-Form 3D Design with Implicit Solid Modeling

Topology-Consistent Design for 3D Freeform Meshes with Harmonic Interpolation

Subdivision interpolating implicit surfaces

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