Nec Corporation

The University of Electro-communications

Telefonaktiebolaget Lm Ericsson (publ)

Masayuki Ariyoshi

Kazushi Muraoka

Kazumine Ogura

Kojiro Hamabe

Shingo Yamanouchi

Toshifumi Nakamura

Tatsuya Sumiya

Toshiyuki Nomura

Shinichi Morimoto

Masanori Sekido

Hiroto Sugahara

Takeo Fujii

Toshinori Takemura

Daisuke Matsuo

Naoya Nakayama

Yasunori Futatsugi

Taichi Tanaka

Daisuke Ikefuji

Masaru Eto

Nagma Samreen Khan

Akihiko Sugiyama

Eric Cosatto

Yuzo Senda

Masahiro Kawai

Yasuhiko Matsunaga

Osamu Hoshuyama

Riaz Esmailzadeh

Kenichirou Yamazaki

Mai Ohta

Kazurnine Ogura

A radar signal transmission/reception unit () acquires a radar signal generated by using a plurality of transmission antennas Tx and a plurality of reception antennas Rx. A projection direction/imaging policy control unit () holds an imaging policy. The imaging policy includes a projection direction representing a direction in which an inspection target is viewed, an imaging area indicating an area of which a three-dimensional radar image is to be generated, and set information being information on a set of pairs of a transmission antenna Tx and a reception antenna Rx for use in generation of the three-dimensional radar image. An imaging unit () generates the three-dimensional radar image from the radar signal in accordance with the imaging policy. A projection processing unit () forms the three-dimensional radar image into a two-dimensional image by projecting the three-dimensional radar image in the projection direction indicated by the imaging policy.

Radar apparatus, imaging method, and non-transitory computer-readable medium

The present invention provides a processing apparatus () including an electromagnetic wave transmission/reception unit () that irradiates an electromagnetic wave from a transmission antenna, and receives a reflection wave by a reception antenna; a label determination image generation unit () that generates a label determination image, based on a signal of the received reflection wave; a learning image generation unit () that generates a learning image, based on a signal being a part of a signal of the receive reflection wave, and less than a signal to be used in generation of the label determination image; a label determination unit () that determines a label, based on the label determination image; and a training data generation unit () that generates training data in which the learning image and the label are associated, and causing a training data storage unit () to store the generated training data.

Processing apparatus, estimation apparatus, and processing method

For increasing measurement precision while suppressing cost increase when measuring a permittivity of an object using a radio wave, an object detection apparatus includes a transmission unit projecting a radio wave toward a target object by using a transmission antenna, a reception unit receiving the radio wave reflected by the target object by a reception antenna and generating an intermediate frequency signal, and an arithmetic apparatus. The arithmetic apparatus computes a reflection amplitude of the target object from the intermediate frequency signal, computes a reflectance from the reflection amplitude, computes a complex permittivity absolute value of the target object from the computed reflectance, computes a depth position of the target object from the reflection amplitude, computes a thickness of the target object from the depth and the reflection amplitude, and computes a permittivity of the target object from the reflection amplitude, the complex permittivity absolute value, and the thickness.

Object detection apparatus, object detection method, and non-transitory computer readable medium

A target object detection apparatus () includes an acquisition unit (), a likelihood information generation unit (), and a determination unit (). The acquisition unit () acquires an IF signal from an irradiation apparatus () at a plurality of timings. The likelihood information generation unit () executes, by processing the IF signal, processing of generating, with respect to each of a plurality of IF signals, likelihood information for a region (hereinafter, referred to as a target object region) having a possibility in that an accompaniment, i.e., a target object is present. The likelihood information indicates a distribution of presence probabilities of a target object in at least a height direction in a target object region. Then, the determination unit () determines a presence or absence of a target object, by using likelihood information generated for each of a plurality of target object regions.

Target object detection apparatus, target object detection method, and non-transitory computer readable medium

A peak label object detection system (PLODS) includes an object size database configured to store information related to object size for a plurality of objects. The PLODS further includes a three-dimensional (3D) sensor database configured to store information related to parameters of a 3D sensor. The PLODS further includes an annotation database configured to store ground truth annotation information for images. The PLODS further includes a peak shape parameter calculator configured to determine a peak label size based on object size from the object size database and the parameters of the 3D sensor. The PLODS further includes a label generator configured to generate a peak labels map based on label size and the ground truth annotation information.

Peak label object detection system and method of using

Provided is a method for movement estimation and movement compensation of a target object that can be applied without introducing restrictions on antenna placement. The present invention provides a radar apparatus including: a radar signal transmission-reception unit acquiring a radar signal acquired by measurement using a transmission antenna and a reception antenna, and a measurement time of the radar signal; a velocity candidate control unit holding a setting of a velocity candidate set of a target object; a velocity estimation imaging unit generating a radar image applied with movement compensation by using each velocity candidate; a velocity estimation unit selecting an estimated velocity from a velocity candidate set, based on comparison of each generated radar image; and an output image imaging unit generating a final output image applied with movement compensation using an estimated velocity.

Radar apparatus, imaging method, and non-transitory storage medium

The present invention provides a processing system () including an image capturing unit () that captures an image of a person passing through a first area and generates a person image indicating an appearance of the person, an electromagnetic wave transmission/reception unit () that emits an electromagnetic wave having a wavelength of 30 micrometers or more and 1 meter or less toward the person passing through the first area, and receives a reflected wave, a determination unit () that determines whether the person possesses a pre-designated object, based on a signal of the received reflected wave, and a registration unit () that registers, in a first list, the person image of the person determined to possess the pre-designated object.

Processing apparatus, processing method, and non-transitory storage medium

The radar deviceincludes radar signal transmission and receiving meansfor obtaining radar signals, based on reflected waves received by a plurality of receiving antennas, movement estimation meansfor estimating a movement of an object that may appear in a radar image, movement discretization meansfor discretizing the estimated movement, signal dividing meansfor dividing the radar signals into a plurality of groups, Fourier transform processing meansfor applying Fourier transform to the radar signals of each of the groups, phase-compensation and synthesis processing meansfor synthesizing results of the Fourier transform after performing phase compensation corresponding to the movement of the object on the results of the Fourier transform, and imaging processing meansfor generating the radar image from the synthesized result of the Fourier transform.

Radar device, imaging method, and imaging program

An inspection system acquires an inspection target person image including an inspection target person, irradiates an electromagnetic wave having a wavelength of equal to or more than 30 micrometers and equal to or less than one meter toward the inspection target person and receives a reflection wave, performs detection processing of detecting an anomalous state based on a signal of the reflection wave, causes a storage unit to store tracking target person information indicating an external appearance of a tracking target person being the inspection target person in which the anomalous state is detected, acquires a worker peripheral image including scenery in the periphery of a worker; detects the tracking target person from the worker peripheral image based on the tracking target person information, and notifies the worker of a position of the tracking target person detected from the worker peripheral image.

Inspection system and inspection method

A radar signal imaging deviceincludes: a transmission unitwhich transmits a radar signal toward an object to be imaged that is a non-rigid body; a position estimation unitwhich estimates the position of the object; an oscillation degree estimation unitwhich estimates an oscillation degree which is a degree of change within a predetermined period in the relative positions of feature points constituting the object; and a synthetic aperture processing unitwhich performs synthetic aperture processing on the radar signal reflected by the object on the basis of the estimated position of the object and the estimated oscillation degree.

Radar signal imaging device, radar signal imaging method, and radar signal imaging program

To shorten a waiting time for a belongings inspection, the present invention provides an inspection systemincluding an acquisition unitthat acquires material information including at least either one of a piece of personal unique information unique to each of inspection target persons, and a piece of environment information indicating a state value of an environment that changes at each inspection timing, and a determination unitthat determines a content of an inspection for the each inspection target person and/or at the each inspection timing, based on the material information.

Inspection system for inspecting contents of a target person, and inspection method thereof

To shorten a waiting time for a belongings inspection, the present invention provides an inspection systemincluding: an electromagnetic wave transmission/reception unitthat irradiates an electromagnetic wave having a wavelength of equal to or more than 30 micrometers and equal to or less than one meter, and receives a reflection wave; a detection unitthat performs detection processing of detecting an abnormal state, based on a signal of the reflection wave; a decision unitthat decides, for an inspection target person from which the abnormal state is detected, whether to perform a secondary inspection at a place or perform a secondary inspection later; and a registration unitthat registers, in association with a result of the detection processing, identification information about the inspection target person decided that a secondary inspection is performed later.

To shorten a waiting time for a belongings inspection, the present invention provides an inspection systemincluding: an electromagnetic wave transmission/reception unitthat irradiates an electromagnetic wave having a wavelength of equal to or more than 30 micrometers and equal to or less than one meter, and receives a reflection wave; a detection unitthat performs detection processing, based on a signal of the reflection wave; a decision unitthat decides a path in which an inspection target person advances, based on a result of the detection processing; and a guide unitthat performs processing of guiding the inspection target person to a decided path.

To shorten a waiting time for a belongings inspection, the present invention provides an inspection systemincluding an acquisition unitthat acquires personal unique information unique to each of inspection target persons, and a determination unitthat determines a content of a belongings inspection based on a signal of a reflection wave of an electromagnetic wave having a wavelength of equal to or more than 30 micrometers and equal to or less than one meter for the each inspection target person, based on the personal unique information.

Systems and methods for determining contents of a belongings inspection based on a signal

For easily setting, for each of a plurality of detection apparatuses, a target object detected by the detection apparatus, a model providing apparatus including: a storage unit storing a machine learning model detecting a plurality of detection target objects, based on a received signal of a reflected wave of an electromagnetic wave with a wavelength equal to or greater than 30 micrometers and equal to or less than 1 meter; a request reception unit receiving a request for a detection model detecting the detection target object, based on the received signal; a selection unit selecting at least one out of a plurality of detection target objects for each request; generation unit generating a detection model detecting a selected detection target object and not detecting an unselected detection target object, based on the machine learning model; and a transmission unit transmitting the generated detection model to a detection apparatus is provided.

Growing community of inventors

Tokyo, Japan

Masayuki Ariyoshi