Three-dimensional shape-measuring device
US7630537B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jun 3, 2004 |
| Grant date | Dec 8, 2009 |
| Priority date | — |
| Expiry date | Oct 15, 2025 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2562/0233
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A 3-D shape measurement apparatus for grasping the state of an object with ease and accuracy is provided. The 3-D shape measurement apparatus includes: a first 3-D sensor 10a having a projecting device 11 for projecting a light pattern on a target area, and a (first) image capturing apparatus 12a placed at a first interval d1 from the projecting device 11 to capture an image of the target area on which the light pattern is projected; a second 3-D sensor 10b having a projecting device 11, and a (second) image capturing apparatus 12b placed at a second interval d2 longer than the first interval d1 from the projecting device 11 to capture an image of the target area on which the light pattern is projected; 3-D information computing means 22 for obtaining external shape information on an object 2 based on the shift of the pattern on the image acquired with the first 3-D sensor 10a; variation information computing means 23 for obtaining variation information on the object 2 based on the shift of the pattern on the image acquired with the second 3-D sensor 10b; and information composing means 24 for composing the external shape information and the variation information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.