Target for photogrammetric analytical measurement system
US6717683B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 1999 |
| Grant date | Apr 6, 2004 |
| Priority date | — |
| Expiry date | Sep 29, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01C11/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A target, which is photographed with an object at a spot for a photogrammtric analytical measurement, comprises first, second, third standard point members and assistant point members. The standard point members and the assistant point members are covered by a reflecting sheet. A distance between the first and second standard point members equals a distance between the second and third standard point members. Two assistant point members are positioned on a first straight line connecting the first and second standard point members. One assistant point member is positioned on a second straight line connecting the second and third standard point members. The distance between the first and second standard point members, the distance between the second and third standard point members, and an angle defined by the first and second straight lines, are predetermined.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.