Real time three dimensional sensing system
US5589942A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 5, 1990 |
| Grant date | Dec 31, 1996 |
| Priority date | — |
| Expiry date | Apr 5, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T7/521
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention is a three dimensional sensing system which utilizes two flexibly located cameras for receiving and recording visual information with respect to a sensed object illuminated by a series of light planes. Each pixel of each image is converted to a digital word and the words are grouped into stripes, each stripe comprising contiguous pixels. One pixel of each stripe in one image is selected and an epi-polar line of that point is drawn in the other image. The three dimensional coordinate of each selected point is determined by determining the point on said epi-polar line which also lies on a stripe in the second image and which is closest to a known light plane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.