Patents by Inventor Jianquan Liu

Jianquan Liu 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: 20240061876
    Abstract: The present disclosure is to provide an information processing apparatus capable of improving accuracy of search results. The information processing apparatus (10) according to the present disclosure includes: a management unit (11) that manages at least one object, an attribute by which the object is classified, and a certainty factor indicating a probability that the object has the attribute in association with each other; a calculation unit (12) that, using a certainty factor of an attribute designated as a search condition and a certainty factor being managed in association with an attribute identical or similar to the attribute designated as the search condition, calculates a score indicating a matching degree of the object with the search condition; and a display unit (13) that displays the object based on the calculated score.
    Type: Application
    Filed: July 14, 2021
    Publication date: February 22, 2024
    Applicant: NEC Corporation
    Inventors: Tingting Dong, Jianquan LIU, daisuke SUGIDOMARI, Taisuke SHIMADA, Yusuke TAKAHASHI
  • Publication number: 20240013427
    Abstract: To utilize results of analyzing a plurality of videos, a video analysis apparatus 100 includes a type receiving unit 110, an acquiring unit 111, and an integration unit 112. The type receiving unit 110 accepts selection of a type of engine in order to analyze each of a plurality of videos and detect a detection target included in each of the plurality of videos. The acquiring unit 111 acquires results of analyzing the plurality of videos by using the selected type of engine among results of analyzing the plurality of videos by using a plurality of types of the engines. The integration unit 112 integrates the acquired results of analyzing the plurality of videos.
    Type: Application
    Filed: June 28, 2023
    Publication date: January 11, 2024
    Applicant: NEC Corporation
    Inventors: Jianquan Liu, Noboru YOSHIDA, Youhei SASAKI, Ryo KAWAI, Satoshi YAMAZAKI, Tingting DONG, Karen STEPHEN, Yuta NAMIKI, Naoki SHINDOU
  • Publication number: 20240013428
    Abstract: To utilize a result of image analysis, an image analysis apparatus 100 includes an analysis result acquisition unit 110 and a counting unit 111. The analysis result acquisition unit 110 acquires analysis information being information acquired by analyzing a still image and including an appearance attribute to which a person included in the still image belongs. The counting unit 111 counts, for each appearance attribute, the number of persons belonging to the appearance attribute in the still image by using the analysis information, and generates counting information indicating a result of the counting in units of still images.
    Type: Application
    Filed: June 29, 2023
    Publication date: January 11, 2024
    Applicant: NEC Corporation
    Inventors: Jianquan Liu, Noboru YOSHIDA, Tingting DONG, Ryo KAWAI, Satoshi YAMAZAKI, Karen STEPHEN, Yuta NAMIKI, Naoki SHINDOU, Youhei SASAKI
  • Publication number: 20240013534
    Abstract: To utilize a result of analyzing an interval between persons included in a video, a video analysis apparatus 100 includes an interval acquisition unit 110 and a display control unit 113. The interval acquisition unit 110 acquires an interval between persons included in a video acquired by photographing a target region. The display control unit 113 causes a display unit to display a time-series transition of first information relating to the number of persons with the acquired interval being equal to or less than a reference value.
    Type: Application
    Filed: June 28, 2023
    Publication date: January 11, 2024
    Applicant: NEC Corporation
    Inventors: Jianquan LIU, Ryo KAWAI, Noboru YOSHIDA, Satoshi YAMAZAKI, Tingting DONG, Karen STEPHEN, Yuta NAMIKI, Naoki SHINDOU, Youhei SASAKI
  • Publication number: 20230410361
    Abstract: To achieve faster search processing in the search processing of a similar image, based on a feature value of each of a plurality of keypoints of a human body included in an image, the present invention provides an image processing system 10 including: a target image acquisition unit 11 that acquires a target image; a skeleton structure detection unit 12 that performs processing of detecting a keypoint of a human body included in the target image; a first verification unit 13 that extracts a first reference image whose relationship with the target image satisfies a first extraction condition, from among a plurality of reference images, based on the detected keypoint; and a second verification unit 14 that extracts a second reference image whose relationship with the target image satisfies a second extraction condition, from among the first reference images, based on the detected keypoint.
    Type: Application
    Filed: May 23, 2023
    Publication date: December 21, 2023
    Applicant: NEC Corporation
    Inventors: Hiroaki TAKEUCHI, Ryo KAWAI, Noboru YOSHIDA, Jianquan LIU, Yuta NAMIKI, Naoki SHINDOU, Youhei SASAKI
  • Patent number: 11830286
    Abstract: A data processing apparatus (1) of the present invention includes a unit that retrieves a predetermined subject from moving image data. The data processing apparatus includes a person extraction unit (10) that analyzes moving image data to be analyzed and extracts a person whose appearance frequency in the moving image data to be analyzed satisfies a predetermined condition among persons detected in the moving image data to be analyzed, and an output unit (20) that outputs information regarding the extracted person.
    Type: Grant
    Filed: October 30, 2020
    Date of Patent: November 28, 2023
    Assignee: NEC CORPORATION
    Inventors: Jianquan Liu, Shoji Nishimura, Takuya Araki, Yasufumi Hirakawa
  • Patent number: 11823491
    Abstract: The present invention provides a processing apparatus (10) including an inter-face-image-group determination unit (11) that determines whether a similarity score between a first representative face image in a first face image group and a second representative face image in a second face image group satisfies a first condition, an intra-face-image-group determination unit (12) that determines, for each of the first face image group and the second face image group, whether a second condition defining a relationship between the representative face image and another image in the face image group is satisfied, based on a similarity score between the first representative face image and each of other face images in the first face image group and a similarity score between the second representative face image and each of other face images in the second face image group, and a processing unit (13) that associates a same person identifier (ID) with a plurality of face images included in the first face image group and t
    Type: Grant
    Filed: December 2, 2019
    Date of Patent: November 21, 2023
    Assignee: NEC CORPORATION
    Inventors: Jianquan Liu, Satoshi Yoshida
  • Publication number: 20230368576
    Abstract: The present invention provides an image processing apparatus (10) including: a first estimation unit (11) performing image analysis on a panoramic image acquired by panoramically expanding a fisheye image generated by a fisheye lens camera and estimating a human action indicated by the panoramic image; a second estimation unit (12) performing image analysis on a partial fisheye image being a partial area in the fisheye image without panoramic expansion and estimating a human action indicated by the partial fisheye image; and a third estimation unit (13) estimating a human action indicated by the fisheye image, based on an estimation result based on the panoramic image and an estimation result based on the partial fisheye image.
    Type: Application
    Filed: September 25, 2020
    Publication date: November 16, 2023
    Applicant: NEC Corporation
    Inventors: Karen STEPHEN, Jianquan LIU
  • Publication number: 20230351571
    Abstract: The present invention provides an image analysis system (10) including: a plurality of image analysis units (11); a selection unit (12) that selects at least one of a plurality of the image analysis units (11); an analysis control unit (15) that causes the selected image analysis unit (11) to analyze an image specified by a user; and an output unit (17) that outputs an analysis result of the image.
    Type: Application
    Filed: September 25, 2020
    Publication date: November 2, 2023
    Applicant: NEC Corporation
    Inventors: Jianquan LIU, Youhei SASAKI, Yuta NAMIKI
  • Publication number: 20230298445
    Abstract: The present invention provides a learning apparatus (10) including: an acquisition unit (11) that acquires an image; a similarity computation unit (12) that computes a similarity between the acquired image, and a first image being accumulated in advance and indicating an abnormal state; a registration unit (13) that registers, as a second image indicating a normal state, the acquired image whose similarity is equal to or less than a first reference value; and a learning unit (14) that generates an estimation model for discriminating between normal and abnormal by machine learning using the first image and the second image.
    Type: Application
    Filed: June 24, 2020
    Publication date: September 21, 2023
    Applicant: NEC Corporation
    Inventors: Jianquan LIU, Kenta ISHIHARA
  • Patent number: 11749021
    Abstract: A retrieval apparatus (2000) is accessible to a storage region (50) in which a plurality of pieces of object information (100) are stored. The object information (100) includes a feature value set (104) being a set of a plurality of feature values acquired regarding an object. The retrieval apparatus (2000) acquires a feature value set (retrieval target set (60)) being a retrieval target, and determines the object information (100) having the feature value set (104) similar to the retrieval target set (60) by comparing the retrieval target set (60) with the feature value set (104). Herein, in a case where a feature value set satisfies a predetermined condition, the retrieval apparatus (2000) performs comparison between the feature value set and another feature value set by using a part of feature values within the feature value set. Further, the retrieval apparatus (2000) outputs output information relating to the determined object information (100).
    Type: Grant
    Filed: May 8, 2020
    Date of Patent: September 5, 2023
    Assignee: NEC CORPORATION
    Inventors: Satoshi Yoshida, Jianquan Liu, Shoji Nishimura
  • Publication number: 20230244713
    Abstract: The present invention provides an image processing apparatus (100) including: an image acquisition unit (101) that acquires an image; a selection unit (109) that selects at least one person included in the image, based on a user input; a skeleton structure detection unit (102) that detects a two-dimensional skeleton structure of a person included in the image; a feature value computation unit (103) that computes a feature value of the detected two-dimensional skeleton structure; and a search unit (105) that searches, from analysis target images, for the analysis target image including a person in a state similar to a state of the selected person, based on a degree of similarity to a feature value of the two-dimensional skeleton structure.
    Type: Application
    Filed: July 1, 2020
    Publication date: August 3, 2023
    Applicant: NEC Corporation
    Inventors: Ryo KAWAI, Noboru YOSHIDA, Yadong PAN, Shoji NISHIMURA, Jianquan LIU
  • Publication number: 20230214421
    Abstract: The present invention provides an image processing apparatus including: an image acquisition unit acquiring a candidate of a query image; a skeletal structure detection unit detecting a two-dimensional skeletal structure of a person included in a candidate of the query image; a query evaluation unit computing an evaluation value of a candidate of the query image, based on a detection result of the two-dimensional skeletal structure; a selection unit selecting a query image out of candidates of the query image, based on the evaluation value; a feature value computation unit computing a feature value of the two-dimensional skeletal structure detected from the query image; and a retrieval unit retrieving an analysis target image including a person in a pose similar to a pose of a person included in the query image out of analysis target images, based on a degree of similarity of the computed feature value.
    Type: Application
    Filed: June 10, 2020
    Publication date: July 6, 2023
    Applicant: NEC Corporation
    Inventors: Noboru YOSHIDA, Yandong PAN, Ryo KAWAI, Jianquan LIU, Shoji NISHIMURA
  • Publication number: 20230215135
    Abstract: The present invention provides an image processing apparatus (100) including an image acquisition unit (101) that acquires a query image, based on an input keyword, a skeleton structure detection unit (102) that detects a two-dimensional skeleton structure of a person included in the query image, a feature value computation unit (103) that computes a feature value of the detected two-dimensional skeleton structure, and a search unit (105) that searches, based on a degree of similarity of the computed feature value, for an analysis target image including a person in a state similar to a state of a person included in the query image from the analysis target image.
    Type: Application
    Filed: June 10, 2020
    Publication date: July 6, 2023
    Applicant: NEC Corporation
    Inventors: Ryo KAWAI, Noboru YOSHIDA, Yadong PAN, Shoji NISHIMURA, Jianquan LIU
  • Publication number: 20230206482
    Abstract: A search information acquisition unit acquires a plurality of pieces of search pose information generated for each of a plurality of target images and indicate a pose of a person included in the target image. An exclusion information acquisition unit acquires exclusion pose information indicating a pose of a person included in an exclusion query image. The exclusion query image is an image to be a query of an image needed to be excluded from a search result, and includes at least a person. An exclusion score computation unit computes an exclusion score for each of the plurality of pieces of search pose information. The exclusion score indicates a degree of similarity of the search pose information to the exclusion pose information. An exclusion image selection unit selects, from the plurality of target images by using the exclusion score, an image needed to be excluded from a search result.
    Type: Application
    Filed: May 8, 2020
    Publication date: June 29, 2023
    Applicant: NEC Corporation
    Inventors: Noboru YOSHIDA, Yadong PAN, Ryo KAWAI, Jianquan LIU, Shoji NISHIMURA
  • Patent number: 11683578
    Abstract: Provided is a processing apparatus (10) including a person detection unit (11) that detects a person from an image generated by a camera that photographs a target area, a computation unit (12) that analyzes the image and computes, for each person, a stay time in the target area and a degree of bias of an appearance position in the target area, and a target person extraction unit (13) that extracts a target person who is a person for whom a computation result by the computation unit (12) satisfies a predetermined condition.
    Type: Grant
    Filed: October 18, 2018
    Date of Patent: June 20, 2023
    Assignee: NEC CORPORATION
    Inventors: Jianquan Liu, Maguell Luka Timir Lano Sandifort
  • Publication number: 20230185845
    Abstract: A query acquisition unit (610) acquires pose information (hereinafter, described as query pose information) that is information to be a query and indicates a pose of a person. A search information acquisition unit (620) acquires a plurality of pieces of search pose information. The search pose information is pose information about an image (hereinafter, described as a target image) to be a search target, and is stored in a database by a plurality of target images. A selection unit (630) selects, from among the plurality of pieces of search pose information, two or more pieces of the search pose information whose degree of similarity to the query pose information satisfies a reference. The selection processing becomes substantially processing of selecting a target image similar to an image (hereinafter, described as a query image) associated with the query pose information.
    Type: Application
    Filed: May 14, 2020
    Publication date: June 15, 2023
    Applicant: NEC Corporation
    Inventors: Ryo KAWAI, Noboru YOSHIDA, Yadong PAN, Shoji NISHIMURA, Jianquan LIU
  • Publication number: 20230186597
    Abstract: A query acquisition unit (610) acquires a plurality of pieces of query information. The query information is information generated for each of a plurality of query images, and indicates a feature of the query image. A similar image selection unit (620) selects, as a similar image by using the plurality of pieces of query information, an image whose degree of similarity to at least one of the query images satisfies a reference. A display control unit (630) displays the similar image selected by the similar image selection unit (620) on a display unit. When the similar image selection unit (620) selects a plurality of the similar images, the display control unit (630) sets a display position or a display order of each of the plurality of similar images on the display unit by using the number of the query images in which the similar image satisfies a reference.
    Type: Application
    Filed: May 22, 2020
    Publication date: June 15, 2023
    Applicant: NEC Corporation
    Inventors: Ryo KAWAI, Noboru YOSHIDA, Yadong PAN, Shoji NISHIMURA, Jianquan LIU
  • Patent number: 11669950
    Abstract: The analysis apparatus (2000) includes a co-appearance event extraction unit (2020) and a frequent event detection unit (2040). The co-appearance event extraction unit (2020) extracts co-appearance events of two or more persons from each of a plurality of sub video frame sequences. The sub video frame sequence is included in a video frame sequence. The analysis apparatus (2000) may obtain the plurality of sub video frame sequences from one or more of the video frame sequences. The one or more of the video frame sequences may be generated by one or more of surveillance cameras. Each of the sub video frame sequences has a predetermined time length. The frequent event detection unit (2040) detects co-appearance events of the same persons occurring at a frequency higher than or equal to a pre-determined frequency threshold.
    Type: Grant
    Filed: November 11, 2020
    Date of Patent: June 6, 2023
    Assignee: NEC CORPORATION
    Inventors: Jianquan Liu, Ka Wai Yung
  • Patent number: 11663184
    Abstract: An information processing apparatus (100) includes an input unit (102) that inputs a first threshold value and a second threshold value which are threshold values related to a degree of similarity of a feature value of each of a plurality of pieces of data, the first threshold value being for regarding data as belonging to an identical group and the second threshold value being smaller than the first threshold value, and a grouping unit (104) that groups the data by using the degree of similarity, the first threshold value, and the second threshold value, in which the grouping unit (104) causes data of which the degree of similarity with representative data is greater than the first threshold value to be included in the same group, and selects new representative data from among pieces of data of which the degree of similarity with the representative data already present is less than the second threshold value.
    Type: Grant
    Filed: May 31, 2018
    Date of Patent: May 30, 2023
    Assignee: NEC CORPORATION
    Inventors: Shoji Nishimura, Jianquan Liu