Three-dimensional distance measurement apparatus and method therefor
US9214024B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 16, 2011 |
| Grant date | Dec 15, 2015 |
| Priority date | — |
| Expiry date | Nov 25, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/20221
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A three-dimensional imaging unit includes a plurality of image pickup devices that image an image and a rotation drive device which rotates the image pickup devices and adjusts optical axes such that reflections of an object to be measured in a space to be measured have a predetermined amount of overlap. An association calculating unit calculates position association information of pixels when a required measurement point is mapped onto a plurality of images. A three-dimensional shape calculating unit calculates a three-dimensional shape of the object to be measured using the position association information and rotational information of the rotation drive device. A three-dimensional shape estimation calculating unit estimates, from the three-dimensional shape, a three-dimensional shape of a region of the object to be measured where the three-dimensional shape is not obtained. A three-dimensional measurement coordinates calculating unit calculates, from an estimation result, three-dimensional coordinates of two distance measurement points designated on the object to be measured. A distance calculating unit calculates a distance between the two points using the three-dimensional coo…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.