Traffic flow measuring method and apparatus
US5530441A · kind A · utility
43Cited by
3References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 5, 1995 |
| Grant date | Jun 25, 1996 |
| Priority date | — |
| Expiry date | Apr 5, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08G1/04
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A method and an apparatus for measuring traffic flows, or in other words the flows of vehicles, inside and near a crossing. The method and apparatus are capable of extracting vehicles with a high level of accuracy. Overlap of vehicles can be avoided by setting the field of a camera to exclude a range from the inflow portion to the vicinity of center of the crossing but to include a range from the center to the vicinity of the outflow portion of the crossing. Accordingly, accuracy of traffic flow measurement can be improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.