公开(公告)号：WO2021152648A1

公开(公告)日：2021-08-05

申请号：PCT/JP2020/002699

申请日：2020-01-27

Applicant: NEC CORPORATION

Inventor： NARISETTY Chaitanya Prasad ,  HINO Tomoyuki

IPC: G08G1/04

Abstract: A traffic monitoring apparatus includes: at least one memory (1203) storing instructions; and at least one processor (1202). The processor is configured to execute the instructions to; acquire waterfall data from a distributed acoustic sensor (DAS) (112), wherein the waterfall data includes a generation position of a vibration on a roadway adjacent to the DAS, a generation time of the vibration and an amplitude of the vibration; preprocess the waterfall data; estimate at least one enhancement of the processed waterfall data, wherein an enhancement corresponds to a traffic flow property; and estimate at least one traffic flow property of the roadway from the enhancements of the processed waterfall data.

公开(公告)号：WO2022113173A1

公开(公告)日：2022-06-02

申请号：PCT/JP2020/043683

申请日：2020-11-24

Applicant: NEC CORPORATION

Inventor： PETLADWALA Murtuza ,  HINO Tomoyuki

IPC: G01D5/353 ,  G08G1/00 ,  G08G1/09

Abstract: An object of the present disclosure is to provide a traffic event detection apparatus, traffic event detection system, a method and a non-transitory computer readable medium capable of detecting traffic events correctly. A traffic event detection apparatus includes a trajectory estimation unit (11) configured to estimate a trajectory of a moving object based on an oscillation signal by using deep neural network, while the oscillation signal is induced by traffic of the moving object; a timestamp extraction unit (12) configured to extract a timestamp of the moving object based on the trajectory of the moving object; and an event extraction unit (13) configured to extract a part of the oscillation signal corresponding to the timestamp of the moving object.

公开(公告)号：WO2023042308A1

公开(公告)日：2023-03-23

申请号：PCT/JP2021/033966

申请日：2021-09-15

Applicant: NEC CORPORATION

Inventor： PETLADWALA Murtuza ,  HINO Tomoyuki

IPC: G08G1/01

Abstract: An object of the present disclosure is to provide an object presence detection system, an object presence detection method and a non-transitory computer readable medium capable of detecting the presence of an object more accurately. In one aspect, an object presence detection system (10) includes a dataset processing unit (11) configured to obtain time-distance graph information of an oscillation signal for each distributed sensing portion, while the oscillation signal is acquired by the plurality of distributed sensing portions and is induced by traffic of a moving object, an impulse detection unit (12) configured to detect impulse response using the time-distance graph information measured by the plurality of distributed sensing portions, and a presence detection unit (13) configured to detect a presence of the moving object, which includes moving direction information of the moving object, using the impulse response information in the time-distance graph information.

公开(公告)号：WO2023275911A1

公开(公告)日：2023-01-05

申请号：PCT/JP2021/024273

申请日：2021-06-28

Applicant: NEC CORPORATION

Inventor： PETLADWALA Murtuza ,  HINO Tomoyuki

IPC: G01H9/00

Abstract: It is difficult to find corresponding between a point on an optical fiber and a point on a monitoring target, therefore, a monitoring system comprises an acquisition means for acquiring a plurality of amplitudes of vibrations for points on an optical fiber based on light propagating the optical fiber attached to a monitoring target, a generation means for generating a vibration mode of the monitoring target based on the plurality of amplitudes and a detection means for detecting a point on the monitoring target corresponding a point on the optical fiber based on the vibration mode.

公开(公告)号：WO2021001889A1

公开(公告)日：2021-01-07

申请号：PCT/JP2019/026131

申请日：2019-07-01

Applicant: NEC CORPORATION

Inventor： NARISETTY Chaitanya Prasad ,  TANAKA Akihiro ,  HINO Tomoyuki

IPC: G08G1/00

Abstract: The present disclosure provides a traffic prediction apparatus, system, method and program capable of predicting the number of vehicles and the speed of vehicles in a predetermined time and in a predetermined range based on waterfall data of vehicles. The traffic prediction apparatus (11) comprises acquisition means (111) for acquiring waterfall data comprising a generation position of a vibration, a generation time of the vibration and an amplitude of the vibration generated by a vehicle traveling on a road, pre-processing means (112) for transforming the acquired waterfall data, generation means (113) for training a portion of the plurality of processed waterfall data and at least one corresponding ground truth traffic property used as plurality of labels to generate a trained model, wherein the ground truth may be obtained from a secondary acquisition means, and prediction means (114) for predicting at least one traffic property for a processed waterfall data.