A synergistic approach to specifying simple number independent layout by example
INTERCHI '93 Proceedings of the INTERCHI '93 conference on Human factors in computing systems
Evolutionary learning of graph layout constraints from examples
UIST '94 Proceedings of the 7th annual ACM symposium on User interface software and technology
Tour into the picture: using a spidery mesh interface to make animation from a single image
Proceedings of the 24th annual conference on Computer graphics and interactive techniques
Design galleries: a general approach to setting parameters for computer graphics and animation
Proceedings of the 24th annual conference on Computer graphics and interactive techniques
Teddy: a sketching interface for 3D freeform design
Proceedings of the 26th annual conference on Computer graphics and interactive techniques
Image-based modeling and photo editing
Proceedings of the 28th annual conference on Computer graphics and interactive techniques
Simplicial families of drawings
Proceedings of the 14th annual ACM symposium on User interface software and technology
A suggestive interface for 3D drawing
Proceedings of the 14th annual ACM symposium on User interface software and technology
Estimating depth from line drawing
Proceedings of the seventh ACM symposium on Solid modeling and applications
A System for Constructing Boundary Representation Solid Models from a Two-Dimensional Sketch
GMP '00 Proceedings of the Geometric Modeling and Processing 2000
A sketching interface for articulated figure animation
Proceedings of the 2003 ACM SIGGRAPH/Eurographics symposium on Computer animation
Interpreting a 3D object from a rough 2D line drawing
VIS '90 Proceedings of the 1st conference on Visualization '90
Interactive modelling from sketches using spherical implicit functions
AFRIGRAPH '04 Proceedings of the 3rd international conference on Computer graphics, virtual reality, visualisation and interaction in Africa
Making the most of using depth reasoning to label line drawings of engineering objects
SM '04 Proceedings of the ninth ACM symposium on Solid modeling and applications
On the evolution of geometrical reconstruction as a core technology to sketch-based modeling
SBM'04 Proceedings of the First Eurographics conference on Sketch-Based Interfaces and Modeling
A two-stage approach for interpreting line drawings of curved objects
SBM'04 Proceedings of the First Eurographics conference on Sketch-Based Interfaces and Modeling
Computers and Graphics
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We present a method for creating 2½D models from line drawings of opaque solid objects. As input, we use a single drawing composed of strokes indicative of surface geometry, but not of texture, color or shading. We attempt to allow the artist to draw naturally, differing from many previous approaches. Our system allows both perspective and orthographic projection to be used and we make no a priori assumptions about the type of model to be produced (i.e. planar, curved, normalon). The frontal geometry of the input drawing is reconstructed by placing constraints at the contours and solving a 2D variational system for the smoothest piecewise smooth surface. An analysis of line labelling allows us to determine what constraints are possible and/or required for each input line. However, because line labelling produces a combinatorial explosion of valid output geometries, we allow the user to guide the constraint selection and optimization with a simple user interface that abstracts the technical details away from the user. The system produces candidate reconstructions using different constraint values, from which the user selects the one that most closely approximates the model represented by the drawing. These choices allow the system to determine the constraints and reconstruct the model. The system runs at interactive speeds.