Method and apparatus for determining the coordinates of an object
US6504605B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 24, 2000 |
| Grant date | Jan 7, 2003 |
| Priority date | — |
| Expiry date | Oct 24, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B11/24
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method and apparatus is described for determining the coordinates on the surface of an object which is illuminated by a beam having pixels which have been modulated according to predetermined mathematical relationships with pixel position within the modulator. The reflected illumination is registered by an image sensor at a known location which registers the intensity of the pixels as received. Computations on the intensity, which relate the pixel intensities received to the pixel intensities transmitted at the modulator, yield the proportional loss of intensity and planar position of the originating pixels. The proportional loss and position information can then be utilized within triangulation equations to resolve the coordinates of associated surface locations on the object.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.