Machine vision methods for identifying extrema of objects in rotated reference frames
US5872870A · kind A · utility
40Cited by
136References
27Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 16, 1996 |
| Grant date | Feb 16, 1999 |
| Priority date | — |
| Expiry date | Feb 16, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30164
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for determining extrema of an object with respect to a reference frame that is rotated in comparison to that of the image and the equipment that acquired it is characterized by the steps of taking a first projection of the object with respect to an axis of a coordinaate system that is rotated with respect to the reference frame of the acquisition equipment, identifying in that projection locations representing extrema of the object, and outputting those locations as indicative of the extrema with respect to the axis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.