Matrix analysis
Machine interpretation of line drawings
Machine interpretation of line drawings
Recovering Three-Dimensional Shape from a Single Image of Curved Objects
IEEE Transactions on Pattern Analysis and Machine Intelligence
Emulating the human interpretation of line-drawings as three-dimensional objects
International Journal of Computer Vision
An optimization-based approach to the interpretation of single line drawings as 3D wire frames
International Journal of Computer Vision
3D Shape Reconstruction by Using Vanishing Points
IEEE Transactions on Pattern Analysis and Machine Intelligence
SKETCH: an interface for sketching 3D scenes
SIGGRAPH '96 Proceedings of the 23rd annual conference on Computer graphics and interactive techniques
Identification of Faces in a 2D Line Drawing Projection of a Wireframe Object
IEEE Transactions on Pattern Analysis and Machine Intelligence
Generating multiple new designs from a sketch
Artificial Intelligence
Teddy: a sketching interface for 3D freeform design
Proceedings of the 26th annual conference on Computer graphics and interactive techniques
Overcoming Superstrictness in Line Drawing Interpretation
IEEE Transactions on Pattern Analysis and Machine Intelligence
Triangle: Engineering a 2D Quality Mesh Generator and Delaunay Triangulator
FCRC '96/WACG '96 Selected papers from the Workshop on Applied Computational Geormetry, Towards Geometric Engineering
Conceptual design and analysis by sketching
Artificial Intelligence for Engineering Design, Analysis and Manufacturing
Evolutionary Search for Faces from Line Drawings
IEEE Transactions on Pattern Analysis and Machine Intelligence
Pen-based styling design of 3D geometry using concept sketches and template models
Proceedings of the 2006 ACM symposium on Solid and physical modeling
Sketch-Based 3D-Shape Creation for Industrial Styling Design
IEEE Computer Graphics and Applications
A freehand sketching interface for progressive construction of 3D objects
Computers and Graphics
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
Producing models from drawings of curved surfaces
SBM'06 Proceedings of the Third Eurographics conference on Sketch-Based Interfaces and Modeling
Classification of primitive shapes using brain-computer interfaces
Computer-Aided Design
A framework for collaborative top-down assembly design
Computers in Industry
| Hi-index | 0.00 |
When designing a 3D object, designers, engineers and teachers often begin investigating potential design tradeoffs by creating informal sketches. Ideally, these sketches-in combination with a variety of engineering analysis tools-would allow prediction of the object's physical properties, especially those that affect the critical early design process. We introduce a pen-based system that reconstructs 3D spatial geometry from a single 2D freehand-sketch consisting of straight and curved lines in interactive time. Several optimization-based approaches to this problem have been proposed, but these generally have difficulty converging to an acceptable solution because the dimensionality of the search space is large. The primary contribution of this paper is a new reconstruction algorithm for orthographic projections of 3D wireframes. The algorithm reconstructs the depths of each vertex by exploiting geometric regularities among the graph lines in a reduced solution space, then optimizes a cost function over this space to recover the vertex depths. A second optimization algorithm is used to infer the 3D geometry of curved strokes once the vertex depths have been recovered. The proposed approach can recover the geometry of several objects with approximately 50 curved strokes in near interactive time. We also present an iterative, Tablet-PC-based design system that uses the proposed reconstruction algorithm to recover 3D objects from 2D orthographic sketches. The system allows the reconstructed objects to be subjected to two types of physical analysis, the results of which are superimposed directly on the sketch: a fast, kinematic simulation, and a complete finite-element-based static analysis. The object can quickly be modified in place using the pen-based interface according to the results of the analysis to allow for iterative design work. We demonstrate the system in action on a variety of early-stage design analyses.