Sketch-based modeling: A survey

Olsen, Luke; Samavati, Faramarz; Sousa, Mário Costa; Jorge, Joaquim

doi:10.1016/j.cag.2008.09.013

Cited by 330 publications

(199 citation statements)

References 74 publications

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“…Converting them into a 3D model therefore requires resolving indeterminacies and inferring a large amount of missing data. Four strategies are commonly used to do so, each of which is based on a different level of hypotheses or a priori knowledge of the shape being modeled (see [1] and [2] for detailed surveys):…”

Section: Related Workmentioning

confidence: 99%

Modeling 3D animals from a side-view sketch

Entem

Barthe

Cani

et al. 2015

Computers & Graphics

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Using 2D contour sketches as input is an attractive solution for easing the creation of 3D models. This paper tackles the problem of creating 3D models of animals from a single, side-view sketch. We use the a priori assumptions of smoothness and structural symmetry of the animal about the sagittal plane to inform the 3D reconstruction. Our contributions include methods for identifying and inferring the contours of shape parts from the input sketch, a method for identifying the hierarchy of these structural parts including the detection of approximate symmetric pairs, and a hierarchical algorithm for positioning and blending these parts into a consistent 3D implicit-surface-based model. We validate this pipeline by showing that a number of plausible animal shapes can be automatically constructed from a single sketch.

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Section: Related Workmentioning

confidence: 99%

Modeling 3D animals from a side-view sketch

Entem

Barthe

Cani

et al. 2015

Computers & Graphics

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“…One approach to 3D modeling is the so-called sketch-rotate-sketch workflow. This approach was introduced in Teddy [IMT99] and inspired a large body of follow-up work; see [OSSJ09] for a survey. These approaches are not designed for modeling from an existing sketch, since the viewpoint rotates throughout the modeling process.…”

Section: Related Workmentioning

confidence: 99%

Geosemantic Snapping for Sketch‐Based Modeling

Shtof

Agathos

Gingold

et al. 2013

Computer Graphics Forum

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Figure 1: Using our method, the human modeler simply drags-and-drops the shape primitives into approximate position; the system provides real-time precise geometric snapping feedback and infers geosemantic constraints between the primitives. (Total modeling time: one minute.) Abstract Modeling 3D objects from sketches is a process that requires several challenging problems including segmentation, recognition and reconstruction. Some of these tasks are harder for humans and some are harder for the machine. At the core of the problem lies the need for semantic understanding of the shape's geometry from the sketch. In this paper we propose a method to model 3D objects from sketches by utilizing humans specifically for semantic tasks that are very simple for humans and extremely difficult for the machine, while utilizing the machine for tasks that are harder for humans. The user assists recognition and segmentation by choosing and placing specific geometric primitives on the relevant parts of the sketch. The machine first snaps the primitive to the sketch by fitting its projection to the sketch lines, and then improves the model globally by inferring geosemantic constraints that link the different parts. The fitting occurs in real-time, allowing the user to be only as precise as needed to have a good starting configuration for this non-convex optimization problem. We evaluate the accessibility of our approach with a user study.

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“…There is a common pipeline [18] for sketch based interfaces, which our system also follows. The first step is to acquire input from the user, by means of an input device, a pen tablet in our case.…”

Section: Implementation Detailsmentioning

confidence: 99%

“…The complicated and hard-to-learn nature of current WIMP (windows, icon, pointer, menu) based 3D modeling tools is the reason for the search of a better interface. Several authors has already recognized the importance of this problem [18]. In this paper, we present a method that tries to mimic the natural interface of pen and paper for creating 3D sketches that can be used an easier way to represent ideas in 3D without much effort.…”

Section: Introductionmentioning

confidence: 99%

Paper and Pen: A 3D Sketching System

Yıldız

Çapın

2012

Computer and Information Sciences III

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This paper proposes a method that resembles a natural pen and paper interface to create curve based 3D sketches. The system is particularly useful for representing initial 3D design ideas without much effort. Users interact with the system by the help of a pressure sensitive pen tablet. The input strokes of the users are projected onto a drawing plane, which serves as a paper that they can place anywhere in the 3D scene. The resulting 3D sketch is visualized emphasizing depth perception. Our evaluation involving several naive users suggest that the system is suitable for a broad range of users to easily express their ideas in 3D. We further analyze the system with the help of an architect to demonstrate the expressive capabilities.

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Sketch-based modeling: A survey

Cited by 330 publications

References 74 publications

Modeling 3D animals from a side-view sketch

Modeling 3D animals from a side-view sketch

Geosemantic Snapping for Sketch‐Based Modeling

Paper and Pen: A 3D Sketching System

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