Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Traffic analysis or control of surface vehicle
Patent
1997-04-30
1999-12-07
Cuchlinski, Jr., William A.
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Traffic analysis or control of surface vehicle
340905, 340995, 340942, 340916, 364438, 364436, 348149, G08G 109, G06K 900
Patent
active
059998776
ABSTRACT:
A traffic flow monitor apparatus which can monitor a traffic flow at high precision over a wide range from the position near a TV camera to the distant position regardless of traffic conditions. An image analysis area crossing a road of an overlooked road image received every predetermined cycle is analyzed, the characteristic portion of the front (rear) portion of the vehicle is registered as a template, the vehicle is tracked by a pattern-matching process while updating the template, and the size of the template is reduced (enlarge) depending on a change in apparent width of a lane during template updating. Since the characteristic portion of the front (rear) portion of the vehicle is registered, and the vehicle is tracked by the pattern-matching process, no reference image of a road portion on which no vehicle exists is required, and influence of approaching or overlapping of another vehicle can be reduced. A traffic flow can be monitored at high precision regardless of deserted traffic or crowded traffic. Since the size is reduced (enlarged) during template updating, a vehicle can be stably tracked by using a template having an appropriate size in the range from the near position to the distant position.
REFERENCES:
patent: 4847772 (1989-07-01), Michalopoulos et al.
patent: 5313295 (1994-05-01), Taniguchi et al.
patent: 5396283 (1995-03-01), Taniguchi et al.
patent: 5509082 (1996-04-01), Toyama et al.
patent: 5590217 (1996-12-01), Toyama
patent: 5598338 (1997-01-01), Taniguchi et al.
patent: 5638116 (1997-06-01), Shimoura et al.
patent: 5699056 (1997-12-01), Yoshida
patent: 5739848 (1998-04-01), Shimoura et al.
patent: 5847755 (1998-12-01), Wixson et al.
A Study of length of queue measurement algorithm using Image Processing (General Meeting of Institute of Electronics and Communication Engineering of Japan; D-423, p. 149, 1995; Hisanori Yokosuka et al.
Kitamura Tadaaki
Satoh Yoshiyuki
Takahashi Kazuya
Cuchlinski Jr. William A.
Hernandez Olga
Hitachi , Ltd.
LandOfFree
Traffic flow monitor apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Traffic flow monitor apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Traffic flow monitor apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-835522