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).
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Patent number: 11935265Abstract: 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: GrantFiled: February 15, 2023Date of Patent: March 19, 2024Assignee: NEC CORPORATIONInventors: Masanori Hara, Tatsuya Shimahara
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Patent number: 11776302Abstract: 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: GrantFiled: October 15, 2021Date of Patent: October 3, 2023Assignee: NEC CORPORATIONInventor: Tatsuya Shimahara
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Publication number: 20230196616Abstract: 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: ApplicationFiled: February 15, 2023Publication date: June 22, 2023Applicant: NEC CorporationInventors: Masanori Hara, Tatsuya Shimahara
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Publication number: 20230144689Abstract: 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: ApplicationFiled: March 27, 2020Publication date: May 11, 2023Applicant: NEC CorporationInventors: Akira HIROKAWA, Tatsuya Shimahara
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Patent number: 11600105Abstract: 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: GrantFiled: June 11, 2021Date of Patent: March 7, 2023Assignee: NEC CORPORATIONInventors: Masanori Hara, Tatsuya Shimahara
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Patent number: 11417145Abstract: 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: GrantFiled: February 24, 2020Date of Patent: August 16, 2022Assignee: NEC CORPORATIONInventors: Masanori Hara, Tatsuya Shimahara
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Publication number: 20220254192Abstract: 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: ApplicationFiled: April 13, 2020Publication date: August 11, 2022Applicant: NEC CorporationInventors: Leiming SU, Tatsuya SHIMAHARA, Hiroak MORITA
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Publication number: 20220036040Abstract: 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: ApplicationFiled: October 15, 2021Publication date: February 3, 2022Applicant: NEC CORPORATIONInventor: Tatsuya Shimahara
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Patent number: 11170197Abstract: 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: GrantFiled: September 13, 2018Date of Patent: November 9, 2021Assignee: NEC CORPORATIONInventor: Tatsuya Shimahara
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Publication number: 20210303821Abstract: 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: ApplicationFiled: June 11, 2021Publication date: September 30, 2021Applicant: NEC CORPORATIONInventors: Masanori HARA, Tatsuya SHIMAHARA
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Publication number: 20200387690Abstract: 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: ApplicationFiled: September 13, 2018Publication date: December 10, 2020Applicant: NEC CorporationInventor: Tatsuya SHIMAHARA
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Publication number: 20200193136Abstract: 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: ApplicationFiled: February 24, 2020Publication date: June 18, 2020Inventors: Masanori Hara, Tatsuya Shimahara
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Patent number: 10586091Abstract: 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: GrantFiled: February 12, 2016Date of Patent: March 10, 2020Assignee: NEC CORPORATIONInventors: Masanori Hara, Tatsuya Shimahara
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Patent number: 9805245Abstract: To accurately show the size of a standard resolution on an image of a fingerprint.Type: GrantFiled: October 31, 2013Date of Patent: October 31, 2017Assignee: NEC CorporationInventor: Tatsuya Shimahara
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Publication number: 20160162723Abstract: 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: ApplicationFiled: February 12, 2016Publication date: June 9, 2016Inventors: MASANORI HARA, Tatsuya Shimahara
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Patent number: 9361506Abstract: 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: GrantFiled: April 17, 2012Date of Patent: June 7, 2016Assignee: NEC CORPORATIONInventors: Masanori Hara, Tatsuya Shimahara
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Publication number: 20150379326Abstract: To accurately show the size of a standard resolution on an image of a fingerprint.Type: ApplicationFiled: October 31, 2013Publication date: December 31, 2015Applicant: NEC CorporationInventor: Tatsuya SHIMAHARA
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Publication number: 20140044324Abstract: 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: ApplicationFiled: April 17, 2012Publication date: February 13, 2014Inventors: Masanori Hara, Tatsuya Shimahara