System for determining the configuration of obscured structure by employing phase profilometry and method of use therefor
US7092106B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 17, 2003 |
| Grant date | Aug 15, 2006 |
| Priority date | — |
| Expiry date | Oct 15, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60G2400/82
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An application of phase profilometry to determine the 3-D configuration of normally obscured structure. In one application, the undercarriage of a vehicle is captured in a 3-D profile while the vehicle is operating normally. The system may use a digital camera; a computer for control, communications, processing, comparing configurations and database storage; a broadband light source; and a device positioned between the light and structure that enables an alternating strip or strips of light and shadows to impinge the obscured surface. A preferred embodiment uses a single straight edge as the device. In addition to profiling the undercarriage of a vehicle and comparing it to an expected configuration of a like vehicle, the system may be used for such diverse applications as determination of correct toll at toll booths, quality inspection in an assembly line, safety and security inspections, and access control.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.