Patents by Inventor Daisuke IKEFUJI

Daisuke IKEFUJI has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20230307138
    Abstract: An image processing apparatus includes at least one memory configured to store instructions, and at least one processor configured to execute the instructions to process an image of a target region, and thereby compute a proximity index being an index relating to a proximity state of a plurality of persons captured in the image, and cause a predetermined apparatus to execute predetermined control, when the proximity index satisfies a criterion.
    Type: Application
    Filed: April 15, 2021
    Publication date: September 28, 2023
    Applicant: NEC Corporation
    Inventors: Gaku Nakano, Shoji Nishimura, Yoshitaka Higeta, Youtarou Noda, Shigeki Shinoda, Yuzo Senda, Shin Tominaga, Masumi Ishikawa, Daisuke Ikefuji, Kana Takizawa, Kenichi Ishii, Yoshiyuki Satou, Eishi Arita, Shota Yamamoto, Shinya Yamasaki, Narumitsu Notomi, Aki Nakamura
  • Publication number: 20230298166
    Abstract: An image processing apparatus (10) includes an image processing unit (110) and a risk information generation unit (120). The image processing unit (110) acquires and processes an image generated by an image capture apparatus (20), that is, an image including a plurality of persons. As an example, the image processing unit (110) sets a person being at least part of the plurality of persons as a reference person and computes a distance (first distance) between the reference person and the closest person to the reference person. By using the first distance, the risk information generation unit (120) generates infection risk information in a target region being an image capture target of the image capture apparatus (20).
    Type: Application
    Filed: April 22, 2021
    Publication date: September 21, 2023
    Applicant: NEC Corporation
    Inventors: Gaku Nakano, Shoji Nishimura, Yoshitaka Higeta, Youtarou Noda, Shigeki Shinoda, Yuzo Senda, Shin Tominaga, Masumi Ishikawa, Daisuke Ikefuji, Kana Takizawa, Kenichi Ishii, Yoshiyuki Satou, Eishi Arita, Shota Yamamoto, Shinya Yamasaki, Narumitsu Notomi, Aki Nakamura
  • Patent number: 11754704
    Abstract: The synthetic aperture radar image processing device includes time-series analysis unit which extracts persistent scatterers from time-series observation data for the observation direction for an observation area observed from multiple observation directions by a radar, and calculating displacement speeds of the extracted persistent scatterers, clustering unit which generates reflection point clusters by clustering extracted persistent scatterers based on their phase and position, distance calculation unit which calculates a distance between each of the persistent scatterers included in the reflection point clusters and each structure included in the observation area, representative value calculation unit which calculates each representative value for the distance between each persistent scatterer and each structure, for each reflection point cluster, and corresponding structure determination unit which associates the structure corresponding to the smallest representative value with the persistent scatterer,
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: September 12, 2023
    Assignee: NEC CORPORATION
    Inventors: Daisuke Ikefuji, Taichi Tanaka, Osamu Hoshuyama
  • Publication number: 20230274553
    Abstract: The present invention provides an image processing apparatus (10) that includes: a feature value extraction unit (11) that, by processing an image including a plurality of persons, extracts an external appearance feature value of each of the persons; and a determination unit (12) that, by processing the image, determines another of the persons who satisfies an infection condition between him/her and each of the persons, and registers relevant information relating to the determined another person in association with the external appearance feature value of each of the persons.
    Type: Application
    Filed: March 8, 2021
    Publication date: August 31, 2023
    Applicant: NEC Corporation
    Inventors: Gaku Nakano, Shoji Nishimura, Yoshitaka Higeta, Youtarou Noda, Shigeki Shinoda, Yuzo Senda, Shin Tominaga, Masumi Ishikawa, Daisuke Ikefuji, Kana Takizawa, Kenichi Ishii, Yoshiyuki Satou, Eishi Arita, Shota Yamamoto, Shinya Yamasaki, Narumitsu Notomi, Aki Nakamura
  • Publication number: 20230230380
    Abstract: An image processing apparatus includes an image processing unit and a risk information generation unit. By processing at least one image, the image processing unit identifies a caution-requiring location being a location where a proximity indicator being an indicator related to a proximity state between a plurality of persons satisfies a criterion. The risk information generation unit outputs information indicating the caution-requiring location. For example, the information is displayed on a display unit through a display control unit. For each person, the image processing unit computes a first distance being the distance to the closest person to the person. Then, for each of a plurality of locations, the image processing unit counts the number of times the first distance has a reference value or less. Then, the proximity indicator is set by using the number of times the first distance has the reference value or less.
    Type: Application
    Filed: April 22, 2021
    Publication date: July 20, 2023
    Applicant: NEC Corporation
    Inventors: Gaku Nakano, Shoji Nishimura, Yoshitaka Higeta, Youtarou Noda, Shigeki Shinoda, Yuzo Senda, Shin Tominaga, Masumi Ishikawa, Daisuke Ikefuji, Kana Takizawa, Kenichi Ishii, Yoshiyuki Satou, Eishi Arita, Shota Yamamoto, Shinya Yamasaki, Narumitsu Notomi, Aki Nakamura
  • Patent number: 11662459
    Abstract: A synthetic-aperture-radar-signal processing device includes a range bin selection unit which selects, from an observed image, range bins including a signal from an isolated reflection point, a phase evaluation unit which evaluates phases in an azimuth direction in the range bins, a window function multiplication unit which designs a window function on the basis of results of the evaluation by the phase evaluation unit and multiply the range bins by the window function, and a phase error correction unit which corrects the observed image by estimating a phase error from the range bins multiplied by the window function.
    Type: Grant
    Filed: June 23, 2017
    Date of Patent: May 30, 2023
    Assignee: NEC CORPORATION
    Inventors: Daisuke Ikefuji, Osamu Hoshuyama
  • Publication number: 20230083818
    Abstract: There is provided a judgment support apparatus 100 including: a disaster situation estimating unit 110 configured to estimate a disaster situation in an object region from disaster related information using a disaster situation estimation model; and a determining unit 120 configured to determine, based on at least an estimated disaster situation and a presentation destination of judgment support information for supporting judgment with respect to the disaster situation, the judgment support information to be presented to the presentation destination.
    Type: Application
    Filed: March 24, 2020
    Publication date: March 16, 2023
    Applicant: NEC Corporation
    Inventors: Shigenori BEPPU, Keita SUZUKI, Shigeki SHINODA, Norifumi YAMAZAKI, Hiroki NAOSHIMA, Daisuke IKEFUJI, Daisuke YAMAKAWA, Mikiko MAKISE
  • Publication number: 20230017248
    Abstract: An information providing system 100 of the present invention includes an acquisition means 121 for acquiring disaster information and acquiring user information that is information related to a user, a generation means 122 for, on the basis of the disaster information and the user information, generating provided information including a captured image that is an image obtained by capturing a predetermined place, and a providing means 123 for providing an information processing device of the user with the provided information.
    Type: Application
    Filed: December 20, 2019
    Publication date: January 19, 2023
    Applicant: NEC Corporation
    Inventors: Daisuke Ikefuji, Shigeki Shinoda, Mikiko Makise, Norifumi Yamazaki, Tetsuo Nakagawa, Akiko Tashiro, Masaki Sawada, Shinichiro Ikeda
  • Publication number: 20230005258
    Abstract: A prediction device 100 of the present invention includes a detection means 121 for, on the basis of a river image that is an image obtained by capturing a river and associated with capturing position information representing a position where the river is captured, detecting river condition information representing a condition of the river at the position where the river image is captured; and a prediction means 122 for, on the basis of the capturing position information, the river condition information, and topography information representing the topography of the river, predicting a river condition representing a condition of the river at a given point of the river. The given point is different from the position represented by the capturing position information.
    Type: Application
    Filed: December 17, 2019
    Publication date: January 5, 2023
    Applicant: NEC Corporation
    Inventors: Shigeki SHINODA, Daisuke IKEFUJI, Shin TOMINGA, Yuzo SENDA, Hirofumi INOUE
  • Patent number: 11460573
    Abstract: A synthetic aperture radar signal processing device 10 includes a persistent scatterer extraction unit 11 which extracts, from time-series observation data related to an observation target observed from a plurality of observation directions by a radar, a plurality of persistent scatterers in respective observation directions; a persistent scatterer grouping unit 12 which groups the plurality of persistent scatterers in each of the observation directions; a group selection unit 13 which selects, in each of the observation directions, a persistent scatterer group that includes the persistent scatterers included in an analysis target from among groups generated by grouping; and a displacement speed processing unit 14 which synthesize displacement speeds of the selected persistent scatterer groups.
    Type: Grant
    Filed: October 10, 2018
    Date of Patent: October 4, 2022
    Assignee: NEC CORPORATION
    Inventors: Daisuke Ikefuji, Taichi Tanaka, Osamu Hoshuyama
  • Publication number: 20220260673
    Abstract: The radar device 10 includes radar signal transmission and receiving means 11 for obtaining radar signals, based on reflected waves received by a plurality of receiving antennas, movement estimation means 12 for estimating a movement of an object that may appear in a radar image, movement discretization means 13 for discretizing the estimated movement, signal dividing means 14 for dividing the radar signals into a plurality of groups, Fourier transform processing means 15 for applying Fourier transform to the radar signals of each of the groups, phase-compensation and synthesis processing means 16 for 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 means 17 for generating the radar image from the synthesized result of the Fourier transform.
    Type: Application
    Filed: June 28, 2019
    Publication date: August 18, 2022
    Applicant: NEC Corporation
    Inventors: Tatsuya SUMIYA, Masayuki ARIYOSHI, Kazurnine OGURA, Taichi TANAKA, Daisuke IKEFUJI
  • Publication number: 20220221577
    Abstract: The signal processing device includes an interference processing unit which generates an interferogram from a plurality of SAR images, a coherence calculation unit which calculates coherence of the SAR images, a singular point processing unit which performs an operation for resolving singular points in the interferogram, a phase unwrapping unit which executes a phase unwrapping process using operation result of the singular point processing unit, and an SBAS analysis unit which performs displacement analysis by SBAS, using processing result of the phase unwrapping unit.
    Type: Application
    Filed: May 29, 2019
    Publication date: July 14, 2022
    Applicant: NEC Corporation
    Inventors: Daisuke IKEFUJI, Taichi TANAKA, Osamu HOSHUYAMA
  • Publication number: 20220179065
    Abstract: The synthetic aperture radar image processing device includes time-series analysis unit which extracts persistent scatterers from time-series observation data for the observation direction for an observation area observed from multiple observation directions by a radar, and calculating displacement speeds of the extracted persistent scatterers, clustering unit which generates reflection point clusters by clustering extracted persistent scatterers based on their phase and position, distance calculation unit which calculates a distance between each of the persistent scatterers included in the reflection point clusters and each structure included in the observation area, representative value calculation unit which calculates each representative value for the distance between each persistent scatterer and each structure, for each reflection point cluster, and corresponding structure determination unit which associates the structure corresponding to the smallest representative value with the persistent scatterer,
    Type: Application
    Filed: March 29, 2019
    Publication date: June 9, 2022
    Applicant: NEC Corporation
    Inventors: Daisuke IKEFUJI, Taichi TANAKA, Osamu HOSHUYAMA
  • Publication number: 20220171052
    Abstract: A radar system includes a measurement policy control unit that determines a measurement policy relating to how a signal is to be measured, a transmitting antenna that irradiates electromagnetic waves according to the measurement policy, a receiving antenna that receives reflected waves of the irradiated electromagnetic waves and generates a measurement signal, a storage unit that stores the measurement signals, a window control unit that determines a window for selecting the measurement signals, a signal selection unit that selects measurement signals from the storage unit based on the window, and an image generating unit that generates a radar image from the selected measurement signals.
    Type: Application
    Filed: June 18, 2019
    Publication date: June 2, 2022
    Applicant: NEC Corporation
    Inventors: Kazumine OGURA, Tatsuya SUMIYA, Masayuki ARIYOSHI, Taichi TANAKA, Daisuke IKEFUJI
  • Publication number: 20210333389
    Abstract: A synthetic-aperture-radar-signal processing device includes a range bin selection unit which selects, from an observed image, range bins including a signal from an isolated reflection point, a phase evaluation unit which evaluates phases in an azimuth direction in the range bins, a window function multiplication unit which designs a window function on the basis of results of the evaluation by the phase evaluation unit and multiply the range bins by the window function, and a phase error correction unit which corrects the observed image by estimating a phase error from the range bins multiplied by the window function.
    Type: Application
    Filed: June 23, 2017
    Publication date: October 28, 2021
    Applicant: NEC Corporation
    Inventors: Daisuke IKEFUJI, Osamu HOSHUYAMA
  • Publication number: 20210239829
    Abstract: A radar signal imaging device 30 includes: a transmission unit 31 which transmits a radar signal toward an object to be imaged that is a non-rigid body; a position estimation unit 32 which estimates the position of the object; an oscillation degree estimation unit 33 which 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 unit 34 which 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.
    Type: Application
    Filed: June 6, 2018
    Publication date: August 5, 2021
    Applicant: NEC Corporation
    Inventors: Kazumine OGURA, Masayuki ARIYOSHI, Yuzo SENDA, Osamu HOSHUYAMA, Taichi TANAKA, Daisuke IKEFUJI, Shingo YAMANOUCHI
  • Publication number: 20210223389
    Abstract: A synthetic aperture radar signal analysis device 20 includes: an extraction unit 21 that extracts a stable reflection point from time-series data acquired through observation, by a synthetic aperture radar, of a region to be observed from a predetermined observing direction; a generation unit 22 that generates a cluster which is a collection of stable reflection points on the basis of the extracted stable reflection point corresponding to the predetermined observing direction; an association unit 23 that associates the generated cluster corresponding to the predetermined observing direction with a structure indicated by map data corresponding to the region to be observed; and a synthesis unit 24 that performs vector-synthesis of displacement rates for a plurality of the clusters each corresponding to the observing direction associated with the structure.
    Type: Application
    Filed: May 16, 2018
    Publication date: July 22, 2021
    Applicant: NEC Corporation
    Inventors: Daisuke IKEFUJI, Taichi TANAKA, Osamu HOSHUYAMA
  • Publication number: 20210132214
    Abstract: A synthetic aperture radar image analysis system 20 includes: a phase correlation determination means 21 which determines a strength of the phase correlation between a plurality of pixels in an image selected from among a plurality of images on the basis of the plurality of images that have been photographed by a synthetic aperture radar and show the same point; a shape determination means 22 which determines a degree of similarity between the shape of the distribution of the plurality of pixels and an object shape indicated by geospatial information; and an association means 23 which associates the plurality of pixels with the object on the basis of the determined strength of the phase correlation and the determined degree of similarity.
    Type: Application
    Filed: May 8, 2018
    Publication date: May 6, 2021
    Applicant: NEC Corporation
    Inventors: Taichi TANAKA, Daisuke IKEFUJI, Osamu HOSHUYAMA
  • Publication number: 20210072376
    Abstract: A synthetic aperture radar signal processing device 10 includes a persistent scatterer extraction unit 11 which extracts, from time-series observation data related to an observation target observed from a plurality of observation directions by a radar, a plurality of persistent scatterers in respective observation directions; a persistent scatterer grouping unit 12 which groups the plurality of persistent scatterers in each of the observation directions; a group selection unit 13 which selects, in each of the observation directions, a persistent scatterer group that includes the persistent scatterers included in an analysis target from among groups generated by grouping; and a displacement speed processing unit 14 which synthesize displacement speeds of the selected persistent scatterer groups.
    Type: Application
    Filed: October 10, 2018
    Publication date: March 11, 2021
    Applicant: NEC Corporation
    Inventors: Daisuke IKEFUJI, Taichi TANAKA, Osamu HOSHUYAMA