Method for modelling a surface and device for implementing same
US5465323A · kind A · utility
Assignees
Inventor
Key dates
| Filing date | May 20, 1991 |
| Grant date | Nov 7, 1995 |
| Priority date | — |
| Expiry date | May 20, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01V2210/66
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method for obtaining a model of a surface including the steps of obtaining measurements of geometrical data concerning specific points on the surface, making a grid of the surface, with the grid passing through said points, memorizing, at an address which is specific to each node of the grid, the coordinates of the node, the number of satellites of the node, information for access to the addresses of said satellites and thereafter to information which relates to them, and geometrical data which may be associated with said node; for each node, defining a local roughness index obtained from a weighted sum of the current coordinates of the node and its satellites, defining the sum of an overall roughness index representing the sum of all the local roughness indices, and of an overall index of the infringement of said geometrical data, iteratively adjusting the coordinates of indefinite nodes, by using at each adjustment the sum of a weighted combination of current node neighbor coordinates and of a combination of geometrical data associated with the node, in order to minimize said sum, and creating a model of the surface on the basis of the adjusted coordinates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.