The University of British Columbia

University of Toronto

Inria Institut National De Recherche En Informatique Et En Automatique

Cloud Yunfei Shao

Alla Sheffer

Karansher Singh

Adrien Bousseau

Methods for characterizing two-dimensional concept drawings are disclosed. The concept drawings comprise cross-sections intersecting at cross-hairs. The method comprises: determining, for each cross-section: a plane on which the cross-section is located, the plane having a normal vector in a three-dimensional coordinate system; and, for each cross-hair on the cross-section, a tangent vector in the three-dimensional coordinate system which is tangent to the cross-section at the cross-hair. For each cross-hair comprising iand jintersecting cross-sections, one or more constraints are satisfied, the constraints comprising: the normal vector nof the plane on which the icross-section is located is at least approximately orthogonal to the normal vector nof the plane on which the jcross-section is located; and the tangent vector tto the icross-section at the cross-hair is at least approximately orthogonal to the tangent vector tto the jcross-section at the cross-hair.

Growing community of inventors

Burnaby, Canada

Cloud Yunfei Shao