Patent №
US 5,283,573
Granted
1994-02-01
Filed 1991
Owner
HITACHI, LTD.
Lab
—
AI components
1
vision
Assignment
Recorded
Dataset
AIPD
2023_r1 edition
Application
07692718
This invention relates to a method an apparatus for measuring traffic flows or in other words, the flows of vehicles, inside and near a crossing, and is directed to provide method and apparatus capable of extracting vehicles with a high level of accuracy. Overlap of vehicles can be avoided by setting the field of a camera not to a range from the inflow portion to the vicinity of center of the crossing, but to a range from the center to the vicinity of the outflow portion (151) of the crossing. Accordingly, accuracy of traffic flow measurement can be improved.
AI classification
Ownership
HITACHI, LTD.
assignment · 57860100
Assignors
TAKATOU, MASAO, TAKAHASHI, KAZUNORI, HAMADA, NOBUHIRO, KITAMURA, TADAAKI, KIKUCHI, KUNIYUKI, TAKENAGA, HIROSHI, MOROOKA, YASUO
On an employer assignment, the assignors are typically the inventors.