The constraints on images of rectangular polyhedra
IEEE Transactions on Pattern Analysis and Machine Intelligence
Emulating the human interpretation of line-drawings as three-dimensional objects
International Journal of Computer Vision
Combining gestures and direct manipulation
CHI '92 Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
An optimization-based approach to the interpretation of single line drawings as 3D wire frames
International Journal of Computer Vision
SKETCH: an interface for sketching 3D scenes
SIGGRAPH '96 Proceedings of the 23rd 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
Visual similarity of pen gestures
Proceedings of the SIGCHI conference on Human Factors in Computing Systems
A suggestive interface for 3D drawing
Proceedings of the 14th annual ACM symposium on User interface software and technology
Experimental evaluation of an on-line scribble recognizer
Pattern Recognition Letters
Progressive 3D Reconstruction from a Sketch Drawing
PG '01 Proceedings of the 9th Pacific Conference on Computer Graphics and Applications
Interpreting a 3D object from a rough 2D line drawing
VIS '90 Proceedings of the 1st conference on Visualization '90
Improving Visualization Skills in Engineering Education
IEEE Computer Graphics and Applications
Technical Section: Sketch-based modeling: A survey
Computers and Graphics
A survey on geometrical reconstruction as a core technology to sketch-based modeling
Computers and Graphics
An Agent-Based Paradigm for Free-Hand Sketch Recognition
AI*IA '09: Proceedings of the XIth International Conference of the Italian Association for Artificial Intelligence Reggio Emilia on Emergent Perspectives in Artificial Intelligence
ParSketch: a sketch-based interface for a 2D parametric geometry editor
HCI'07 Proceedings of the 12th international conference on Human-computer interaction: interaction platforms and techniques
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 sketching interface for 3D modeling of polyhedrons
SBM'06 Proceedings of the Third Eurographics conference on Sketch-Based Interfaces and Modeling
Using sketches and retrieval to create LEGO models
SBM'08 Proceedings of the Fifth Eurographics conference on Sketch-Based Interfaces and Modeling
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Although CAD systems have evolved considerably in functionality, expressiveness and modeling power over the last decades, their user interfaces are still tied to legacy principles and are not suited to the initial stages of product development. They exhibit steep learning curves, cumber-some and overly structured dialogues, including hundreds of commands. While much of this functionality may be required by the sheer complexity of the tasks these systems are designed to help, we believe the user interface could benefit from simpler paradigms based on sketching and drawing to reduce unneeded complexity, especially in the conceptual design phase. In what follows, we present the CIGRO system that provides a reduced instruction set calligraphic interface to create polyhedral objects using an incremental drawing paradigm evocative of paper and pencil drawings. Users draw lines using an axonometric projection, which are automatically beautified and connected to existing elements of the drawing. Such line drawings are then converted to a three-dimensional model through a reconstruction process guided by an axonometric inflation method.