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公开(公告)号：US20200019810A1
公开(公告)日：2020-01-16
申请号：US16497610
申请日：2017-03-28
Applicant: NEC Corporation
Inventor： Toru TAKAHASHI , Rui ISHIYAMA , Yuta KUDO
Abstract: An imaging unit, an extraction unit, a feature amount pair generation unit, and an imaging parameter adjustment unit are included. The imaging unit acquires images obtained by imaging each of N (N≥3) types of objects a plurality of times by setting a value of a specific imaging parameter, among a plurality of types of imaging parameters, as a certain candidate value and changing a value of the remaining imaging parameter. The extraction unit extracts a feature amount from each of the images. The feature amount pair generation unit generates, as a first feature amount pair for each of the N types of objects, a feature amount pair in which two feature amounts constituting the feature amount pair are extracted from images of objects of the same type, and generates, as a second feature amount pair for every combination of the N types of objects, a feature amount pair in which two feature amounts constituting the feature amount pair are extracted from a images of objects of the different types. The imaging parameter adjustment unit generates a first distribution that is a distribution of collation scores of the first feature amount pairs, generates a second distribution that is a distribution of collation scores of the second feature amount pairs, and on the basis of a degree of separation between the first distribution and the second distribution, determines the propriety of adopting the candidate value.
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公开(公告)号：US20170287147A1
公开(公告)日：2017-10-05
申请号：US15507322
申请日：2015-08-31
Applicant: NEC Corporation
Inventor： Toru TAKAHASHI , Rui ISHIYAMA
CPC classification number: G06T7/35 , G06K9/00577 , G06K9/2036 , G06Q20/40 , G06T7/0004 , G06T7/001 , G06T2207/30204 , G07G1/009
Abstract: The present invention addresses the problem of providing a technique for determining the authenticity of a product without requiring a special device such as an integrated circuit (IC) tag. A means for solving this problem according to the invention is characterized by determining the authenticity of a target product on the basis of the validity of the association between the body of the product and a surface-treated component that is mounted to the body and that has been validated.
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公开(公告)号：US20220326010A1
公开(公告)日：2022-10-13
申请号：US17764697
申请日：2019-10-04
Applicant: NEC Corporation
Inventor： Toru TAKAHASHI , Rui Ishiyama , Kengo Makino , Takashi Shibata
Abstract: A surface property estimation system includes an image acquisition means for acquiring an image of a surface of an object, an estimation means for estimating a surface property from the acquired image by using an estimation model obtained through machine learning with use of an image of a surface of an object and a surface property shown by the image as training data, an extraction means for extracting, from the acquired image, a feature amount unique to the image, and a registration means for storing the estimated surface property and the extracted feature amount in a storage means in association with each other.
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公开(公告)号：US20210049399A1
公开(公告)日：2021-02-18
申请号：US16977130
申请日：2018-03-05
Applicant: NEC CORPORATION
Inventor： Kengo MAKINO , Toru TAKAHASHI , Rui ISHIYAMA , Yuta KUDO
Abstract: An image matching device that performs matching between a first image and a second image includes: a frequency characteristic acquisition unit configured to acquire a frequency characteristic of the first image and a frequency characteristic of the second image; a frequency characteristic synthesizing unit configured to synthesize the frequency characteristic of the first image and the frequency characteristic of the second image to generate a synthesized frequency characteristic; a determination unit configured to perform frequency transformation on the synthesized frequency characteristic to calculate a correlation coefficient map whose resolution coincides with a target resolution, and perform matching between the first image and the second image based on a matching score calculated from the correlation coefficient map; and a regulation unit configured to regulate the target resolution based on the matching score.
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公开(公告)号：US20190287266A1
公开(公告)日：2019-09-19
申请号：US16347740
申请日：2016-11-30
Applicant: NEC Corporation
Inventor： Toru TAKAHASHI , Rui ISHIYAMA
Abstract: An individual identifying device includes a conversion unit and an alignment unit. The conversion unit performs frequency conversion on an image obtained by imaging an object. The alignment unit performs alignment of an image for extracting a feature amount for identifying an individual of the object, based on a first subregion in the image after the frequency conversion.
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Patent Agency Ranking
公开(公告)号：US20190279377A1
公开(公告)日：2019-09-12
申请号：US16351151
申请日：2019-03-12
Applicant: NEC Corporation
Inventor： Toru TAKAHASHI , Rui ISHIYAMA
Abstract: The present invention addresses the problem of providing a technique for determining the authenticity of a product without requiring a special device such as an integrated circuit (IC) tag. A means for solving this problem according to the invention is characterized by determining the authenticity of a target product on the basis of the validity of the association between the body of the product and a surface-treated component that is mounted to the body and that has been validated.
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公开(公告)号：US20180039830A1
公开(公告)日：2018-02-08
申请号：US15549223
申请日：2016-02-25
Applicant: NEC CORPORATION
Inventor： Rui ISHIYAMA , Toru TAKAHASHI , Yuta KUDO
CPC classification number: G06K9/00577 , G06F16/51 , G06F17/18 , G06K9/6267 , G06K2009/00583 , G06Q50/04 , G06T7/00 , Y02P90/30
Abstract: A comparison system includes a portable terminal including image capturing unit configured to capture a comparison image of a predetermined comparison region of a comparison object; and a server including comparison unit configured to compare the comparison object with a registered object on the basis of a statistical value for the luminance value of pixels in a registered image of the registered object, the pixels of the registered image existing at pixel positions corresponding to pixel positions estimated to be generating specular reflection in the comparison image captured by the portable terminal.
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公开(公告)号：US20220277573A1
公开(公告)日：2022-09-01
申请号：US17618132
申请日：2019-06-21
Applicant: NEC Corporation
Inventor： Kengo MAKINO , Toru TAKAHASHI , Rui ISHIYAMA , Yuta KUDO
IPC: G06V30/146 , G06V30/14 , G06V30/19
Abstract: An object management system includes an acquisition means for acquiring an image in which a surface of a registration target object, having a circle and a handwritten character drawn thereon, is captured, a generation means for detecting an ellipse corresponding to the circle from the image and generating a registration image in which the image is applied with projective transformation such that the ellipse becomes a circle, and a registration means for writing the registration image into a storage means as data for determining the sameness of the registration target object.
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公开(公告)号：US20210342617A1
公开(公告)日：2021-11-04
申请号：US16757806
申请日：2018-09-26
Applicant: NEC CORPORATION
Inventor： Yuta KUDO , Rui ISHIYAMA , Toru TAKAHASHI , Kengo MAKINO
Abstract: The present invention relates to an information processing device used in an image capture device that illuminates an object with an illuminating unit and images light reflected from the object as a reflection image with an imaging unit. The information processing device includes an irradiation angle determining unit configured to determine an irradiation angle when the illuminating unit illuminates the object based on a tilt statistic that is a value corresponding to tilt distribution of irregularities formed on the surface of the object.
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公开(公告)号：US20200242397A1
公开(公告)日：2020-07-30
申请号：US16652528
申请日：2018-09-05
Applicant: NEC Corporation
Inventor： Rui ISHIYAMA , Toru TAKAHASHI
Abstract: When there is an image component common to multiple registered images, the accuracy of individual identification lowers. A decision unit decides, for each partial area, the degree of effectiveness relating to calculation of a score representing a similarity between a registered image obtained by capturing an object to be registered and a collated image obtained by capturing an object to be collated, based on whether or not the partial area contains an image component common to multiple registered images obtained by capturing multiple objects to be registered. A calculation unit calculates the score based on image components contained in the registered image and the collated image and on the degrees of effectiveness.
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