Machine interpretation of line drawings
Machine interpretation of line drawings
Three-dimensional computer vision
Three-dimensional computer vision
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
Identification of Faces in a 2D Line Drawing Projection of a Wireframe Object
IEEE Transactions on Pattern Analysis and Machine Intelligence
An interface for 3D conceptual design based on freehand sketching
GMCAD '96 Proceedings of the fifth IFIP TC5/WG5.2 international workshop on geometric modeling in computer aided design on Product modeling for computer integrated design and manufacture
Automatic object extraction from aerial imagery—a survey focusing on buildings
Computer Vision and Image Understanding
Engineering Graphics
A System for Constructing Boundary Representation Solid Models from a Two-Dimensional Sketch
GMP '00 Proceedings of the Geometric Modeling and Processing 2000
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
Constraints Between Distant Lines in the Labelling of Line Drawings of Polyhedral Scenes
International Journal of Computer Vision
Regularity selection for effective 3D object reconstruction from a single line drawing
Pattern Recognition Letters
Freeform surface inference from sketches via neural networks
Neurocomputing
A template-based reconstruction of plane-symmetric 3D models from freehand sketches
Computer-Aided Design
Frontal geometry from sketches of engineering objects: is line labelling necessary?
Computer-Aided Design
3D reconstruction of freeform shapes from 2D line drawings
Proceedings of the 9th ACM SIGGRAPH Conference on Virtual-Reality Continuum and its Applications in Industry
3D freeform surfaces from planar sketches using neural networks
ICONIP'06 Proceedings of the 13th international conference on Neural Information Processing - Volume Part II
Producing models from drawings of curved surfaces
SBM'06 Proceedings of the Third Eurographics conference on Sketch-Based Interfaces and Modeling
A hybrid intelligent system for 3D reconstruction from a single line drawing
International Journal of Computer Applications in Technology
3D Object Modeling using Sketches
Information Resources Management Journal
Stereoscopizing cel animations
ACM Transactions on Graphics (TOG)
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Our goal is unassisted machine interpretation of a single line drawing of an engineering object (with hidden lines removed) as a B-rep model. As part of this process, we seek to deduce a frontal geometry of the object, a 3D geometric realisation of that part of the object visible in the drawing. Inflation takes a drawing in which all lines have been line-labelled, and creates the frontal geometry by adding a z-coordinate to the x- and y-coordinates of each junction. This depth information comes from compliance functions, interpretations of drawing features expressed as equations in junction z-coordinates. We examine several compliance functions, and assessing their use in interpretation of engineering objects. We also describe a compliance function based on junction labels, and remove its previous restriction to trihedral vertices. We give a comparative analysis of applying combinations of compliance functions to a set of test drawings. As a result, we recommend using edge parallelism in combination with either corner orthogonality or junction label pairs, the latter being more reliable in general. Additional use of face planarity compliance is often beneficial and even necessary.