Abstract
A normal to the extremal contour of a 3D object is the same as the normal computed for the image contour projected on the unit sphere by the rays grazing the extremal contour. This fact is utilized in the present work to derive the parameters of quadric surfaces. We require three views of the point of intersection of two painted curves on an object. Out of the three views, one view must be chosen such that the image contours of the curves appear close to the extremal contours. Then the normals to the image contours (i.e., apparent contours) and the normals to the surface curves (i.e., contour generators) can be related through differential geometry to yield quadric representation of a surface at the point of interest.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of King Saud University - Computer and Information Sciences
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
