Hitachi, Ltd.

Kuniyuki Kikuchi

Hiroshi Takenaga

Tadaaki Kitamura

Yasuo Morooka

Nobuhiro Hamada

Masao Takatoo

Kazunori Takahashi

Kazuyoshi Asada

Yoshiyuki Okuyama

Norio Tanaka

Masao Takatou

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.

Traffic flow measuring method and apparatus

An information processing apparatus using a neural network learning function has, in one embodiment, a computer system and a pattern recognition apparatus associated with each other via a communication cable. The computer system includes a learning section having a first neural network and serves to adjust the weights of connection therein as a result of learning with a learning data signal supplied thereto from the pattern recognition apparatus via the communication cable. The pattern recognition apparatus includes an associative output section having a second neural network and receives data on the adjusted weights from the learning section via the communication cable to reconstruct the second neural network with the data on the adjusted weights. The pattern recognition apparatus with the associative output section having the reconstructed second neural network performs pattern recognition independently of the computer system with the communication cable being brought into an electrical isolation mode.

Information processing system using neural network learning function

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.

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Hitachiota, Japan

Kuniyuki Kikuchi