Apparatus and method for recognizing three-dimensional shape of object
US4982438A · kind A · utility
108Cited by
6References
8Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 1, 1989 |
| Grant date | Jan 1, 1991 |
| Priority date | — |
| Expiry date | Sep 1, 2009 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2013/0081
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A three-dimensional shape of an object is recognized by developing enveloping surfaces of the object by a cone-silhouetting method, wherein the object is picked up by a binocular three-dimensional vision method by making use of geometrical restraint conditions derived by the cone-silhouetting method. The binocular parallax is increased to thereby ensure the recognition of the three-dimensional shape with improved accuracy. Local concave portions which can not be recognized by the cone-silhouetting method by itself are recognized with higher accuracy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.