Patents by Inventor Tatsuya Shimahara

Tatsuya Shimahara 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).

  • Patent number: 11935265
    Abstract: A fingerprint image processing device includes a memory, and a processor coupled to the memory. The processor performs operations. The operations include reading a tenprint card image which includes a plurality of fingerprint patterns and at least one ruled line to separate one fingerprint imprint area from another fingerprint imprint area, and extracting from the tenprint card image a fingerprint image which includes at least one of the fingerprint patterns, apart of a fingerprint imprint area, and a part of a next fingerprint imprint area.
    Type: Grant
    Filed: February 15, 2023
    Date of Patent: March 19, 2024
    Assignee: NEC CORPORATION
    Inventors: Masanori Hara, Tatsuya Shimahara
  • Patent number: 11776302
    Abstract: A biometric recognition apparatus and fingerprint feature extraction method can automatically optimize parameters used for extracting a feature template from a biometric image. The biometric recognition apparatus includes: a teacher data generation unit that generates a genuine pair and an imposter pair of first and second biometric images; a learning data generation unit that uses a plurality of different temporary parameters to extract feature templates from the first biometric image and the second biometric image; and an optimum solution determination unit that calculates a score separation degree on the temporary parameter basis based on a first score representing a similarity degree of a pair of the feature templates extracted from the genuine pair and a second score representing a similarity degree of a pair of the feature templates extracted from the imposter pair and determines the temporary parameter based on a level of the score separation degree.
    Type: Grant
    Filed: October 15, 2021
    Date of Patent: October 3, 2023
    Assignee: NEC CORPORATION
    Inventor: Tatsuya Shimahara
  • Publication number: 20230196616
    Abstract: A fingerprint image processing device includes a memory, and a processor coupled to the memory. The processor performs operations. The operations include reading a tenprint card image which includes a plurality of fingerprint patterns and at least one ruled line to separate one fingerprint imprint area from another fingerprint imprint area, and extracting from the tenprint card image a fingerprint image which includes at least one of the fingerprint patterns, apart of a fingerprint imprint area, and a part of a next fingerprint imprint area.
    Type: Application
    Filed: February 15, 2023
    Publication date: June 22, 2023
    Applicant: NEC Corporation
    Inventors: Masanori Hara, Tatsuya Shimahara
  • Publication number: 20230144689
    Abstract: A stripe pattern image collating device according to the example embodiment includes a feature extracting unit that extracts a feature point and a skeleton from a first stripe pattern image and a second stripe pattern image in which a stripe pattern is formed of ridges, and generates feature point data and skeleton data. A skeleton collating unit that collates two sets of pieces of the feature point data and pieces of the skeleton data that are extracted from each of the first stripe pattern image and the second stripe pattern image, and calculates a collation score. An image analyzing unit that analyzes the second stripe pattern image with respect to an area in which an opposite feature point pair of the first stripe pattern image exists, calculates an image analysis score, and corrects the collation score.
    Type: Application
    Filed: March 27, 2020
    Publication date: May 11, 2023
    Applicant: NEC Corporation
    Inventors: Akira HIROKAWA, Tatsuya Shimahara
  • Patent number: 11600105
    Abstract: A fingerprint image processing device includes a memory, and a processor coupled to the memory. The processor performs operations. The operations include reading a tenprint card image which includes a plurality of fingerprint patterns and at least one ruled line to separate one fingerprint imprint area from another fingerprint imprint area, and extracting from the tenprint card image a fingerprint image which includes at least one of the fingerprint patterns, apart of a fingerprint imprint area, and a part of a next fingerprint imprint area.
    Type: Grant
    Filed: June 11, 2021
    Date of Patent: March 7, 2023
    Assignee: NEC CORPORATION
    Inventors: Masanori Hara, Tatsuya Shimahara
  • Patent number: 11417145
    Abstract: A fingerprint image processing device includes a memory, and a processor coupled to the memory. The processor performs operations. The operations include reading a tenprint card image which includes a plurality of fingerprint patterns and at least one ruled line to separate one fingerprint imprint area from another fingerprint imprint area, and extracting from the tenprint card image a fingerprint image which includes at least one of the fingerprint patterns, a part of a fingerprint imprint area, and a part of a next fingerprint imprint area.
    Type: Grant
    Filed: February 24, 2020
    Date of Patent: August 16, 2022
    Assignee: NEC CORPORATION
    Inventors: Masanori Hara, Tatsuya Shimahara
  • Publication number: 20220254192
    Abstract: The example embodiments provides a processing system including an extraction unit that extracts a feature amount of light reflected by a cornea of a person from an image generated by a first imaging apparatus, a comparison unit that specifies an imaging apparatus corresponding to the extracted feature amount of the light based on the extracted feature amount of the light and a reference feature amount indicating a feature of light emitted by each of a plurality of imaging apparatuses at a time of imaging, and a biometric detection unit that performs biometric detection based on a result of whether or not the first imaging apparatus matches the specified imaging apparatus.
    Type: Application
    Filed: April 13, 2020
    Publication date: August 11, 2022
    Applicant: NEC Corporation
    Inventors: Leiming SU, Tatsuya SHIMAHARA, Hiroak MORITA
  • Publication number: 20220036040
    Abstract: A biometric recognition apparatus and fingerprint feature extraction method can automatically optimize parameters used for extracting a feature template from a biometric image. The biometric recognition apparatus includes: a teacher data generation unit that generates a genuine pair and an imposter pair of first and second biometric images; a learning data generation unit that uses a plurality of different temporary parameters to extract feature templates from the first biometric image and the second biometric image; and an optimum solution determination unit that calculates a score separation degree on the temporary parameter basis based on a first score representing a similarity degree of a pair of the feature templates extracted from the genuine pair and a second score representing a similarity degree of a pair of the feature templates extracted from the imposter pair and determines the temporary parameter based on a level of the score separation degree.
    Type: Application
    Filed: October 15, 2021
    Publication date: February 3, 2022
    Applicant: NEC CORPORATION
    Inventor: Tatsuya Shimahara
  • Patent number: 11170197
    Abstract: Provided is a biometric recognition apparatus and a fingerprint feature extraction method that can automatically optimize parameters used for extracting a feature template from a biometric image. The biometric recognition apparatus includes: a teacher data generation unit that generates a genuine pair and an imposter pair of a first biometric image and a second biometric image; a learning data generation unit that uses a plurality of different temporary parameters to extract feature templates from the first biometric image and the second biometric image; and an optimum solution determination unit that calculates a score separation degree on the temporary parameter basis based on a first score representing a similarity degree of a pair of the feature templates extracted from the genuine pair and a second score representing a similarity degree of a pair of the feature templates extracted from the imposter pair and determines the temporary parameter based on a level of the score separation degree.
    Type: Grant
    Filed: September 13, 2018
    Date of Patent: November 9, 2021
    Assignee: NEC CORPORATION
    Inventor: Tatsuya Shimahara
  • Publication number: 20210303821
    Abstract: A fingerprint image processing device includes a memory, and a processor coupled to the memory. The processor performs operations. The operations include reading a tenprint card image which includes a plurality of fingerprint patterns and at least one ruled line to separate one fingerprint imprint area from another fingerprint imprint area, and extracting from the tenprint card image a fingerprint image which includes at least one of the fingerprint patterns, apart of a fingerprint imprint area, and a part of a next fingerprint imprint area.
    Type: Application
    Filed: June 11, 2021
    Publication date: September 30, 2021
    Applicant: NEC CORPORATION
    Inventors: Masanori HARA, Tatsuya SHIMAHARA
  • Publication number: 20200387690
    Abstract: Provided is a biometric recognition apparatus and a fingerprint feature extraction method that can automatically optimize parameters used for extracting a feature template from a biometric image. The biometric recognition apparatus includes: a teacher data generation unit that generates a genuine pair and an imposter pair of a first biometric image and a second biometric image; a learning data generation unit that uses a plurality of different temporary parameters to extract feature templates from the first biometric image and the second biometric image; and an optimum solution determination unit that calculates a score separation degree on the temporary parameter basis based on a first score representing a similarity degree of a pair of the feature templates extracted from the genuine pair and a second score representing a similarity degree of a pair of the feature templates extracted from the imposter pair and determines the temporary parameter based on a level of the score separation degree.
    Type: Application
    Filed: September 13, 2018
    Publication date: December 10, 2020
    Applicant: NEC Corporation
    Inventor: Tatsuya SHIMAHARA
  • Publication number: 20200193136
    Abstract: A fingerprint image processing device includes a memory, and a processor coupled to the memory. The processor performs operations. The operations include reading a tenprint card image which includes a plurality of fingerprint patterns and at least one ruled line to separate one fingerprint imprint area from another fingerprint imprint area, and extracting from the tenprint card image a fingerprint image which includes at least one of the fingerprint patterns, a part of a fingerprint imprint area, and a part of a next fingerprint imprint area.
    Type: Application
    Filed: February 24, 2020
    Publication date: June 18, 2020
    Inventors: Masanori Hara, Tatsuya Shimahara
  • Patent number: 10586091
    Abstract: A fingerprint image processing device includes a memory, and a processor coupled to the memory. The processor performs operations, including reading a tenprint card image which includes a plurality of fingerprint patterns and at least one ruled line to separate one fingerprint imprint area from another fingerprint imprint area, and extracting from the tenprint card image a fingerprint image which includes a part of a fingerprint imprint area and apart of a next fingerprint imprint area.
    Type: Grant
    Filed: February 12, 2016
    Date of Patent: March 10, 2020
    Assignee: NEC CORPORATION
    Inventors: Masanori Hara, Tatsuya Shimahara
  • Patent number: 9805245
    Abstract: To accurately show the size of a standard resolution on an image of a fingerprint.
    Type: Grant
    Filed: October 31, 2013
    Date of Patent: October 31, 2017
    Assignee: NEC Corporation
    Inventor: Tatsuya Shimahara
  • Publication number: 20160162723
    Abstract: A fingerprint image processing device includes a memory, and a processor coupled to the memory. The processor performs operations, including reading a tenprint card image which includes a plurality of fingerprint patterns and at least one ruled line to separate one fingerprint imprint area from another fingerprint imprint area, and extracting from the tenprint card image a fingerprint image which includes a part of a fingerprint imprint area and apart of a next fingerprint imprint area.
    Type: Application
    Filed: February 12, 2016
    Publication date: June 9, 2016
    Inventors: MASANORI HARA, Tatsuya Shimahara
  • Patent number: 9361506
    Abstract: A system, which computer processes a tenprint card where fingerprint images are imprinted, provides a processing mechanism which automatically crops or segments respective fingerprint images on the tenprint card. In particular, the system provides: a processing mechanism which appropriately crops or segments a slap print image, even if a fingerprint image of slap prints does not fit in a predetermined frame or even if noise other than fingerprints to be cropped or segmented is present within a frame of a four-finger slap, by using a result of matching with rolled prints; and a processing mechanism which checks a correspondence relationship between the rolled prints and the plane prints, assesses a finger position, and detects an error of imprinting position.
    Type: Grant
    Filed: April 17, 2012
    Date of Patent: June 7, 2016
    Assignee: NEC CORPORATION
    Inventors: Masanori Hara, Tatsuya Shimahara
  • Publication number: 20150379326
    Abstract: To accurately show the size of a standard resolution on an image of a fingerprint.
    Type: Application
    Filed: October 31, 2013
    Publication date: December 31, 2015
    Applicant: NEC Corporation
    Inventor: Tatsuya SHIMAHARA
  • Publication number: 20140044324
    Abstract: A system, which computer processes a tenprint card where fingerprint images are imprinted, provides a processing mechanism which automatically crops or segments respective fingerprint images on the tenprint card. In particular, the system provides: a processing mechanism which appropriately crops or segments a slap print image, even if a fingerprint image of slap prints does not fit in a predetermined frame or even if noise other than fingerprints to be cropped or segmented is present within a frame of a four-finger slap, by using a result of matching with rolled prints; and a processing mechanism which checks a correspondence relationship between the rolled prints and the plane prints, assesses a finger position, and detects an error of imprinting position.
    Type: Application
    Filed: April 17, 2012
    Publication date: February 13, 2014
    Inventors: Masanori Hara, Tatsuya Shimahara