Patents by Inventor Takahiro Aoki

Takahiro Aoki 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).

  • Three-dimensional shape measuring device and three-dimensional shape measuring method
    Patent number: 10145679
    Abstract: A three-dimensional shape measuring device is provided that enables an accuracy in measuring a three-dimensional shape of a subject to be improved even when a relationship between a luminance value and a distance deviates from an ideal point light source model in which the luminance value is inversely proportional to the square of the distance. A biometric authentication device includes a coefficient setting unit that sets a coefficient that is an index of a power in a model expression for making a luminance value of a captured image be proportional to an inverse of the power of a distance from a light source to a measurement point of the luminance value according to a prescribed condition, and a three-dimensional shape measuring unit that measures the three-dimensional shape of the subject according to the luminance value of the captured image and the coefficient.
    Type: Grant
    Filed: December 11, 2015
    Date of Patent: December 4, 2018
    Assignee: Fujitsu Limited
    Inventor: Takahiro Aoki
  • Ionic liquid and method for dissolving cellulose using the same
    Patent number: 10119173
    Abstract: The present invention provides an ionic liquid represented by the following chemical formula, [(CH3)3N(CH2)2OH]+[NH2(CH2)3CH(NH2)COO]?. The present invention provides an ionic liquid capable of dissolving cellulose within twenty-four hours.
    Type: Grant
    Filed: August 8, 2017
    Date of Patent: November 6, 2018
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Takahiro Aoki, Tomoko Kawashima, Haruka Kusukame, Yuko Taniike
  • IONIC LIQUID AND METHOD FOR DISSOLVING CELLULOSE USING THE SAME
    Publication number: 20180273698
    Abstract: The present invention provides an ionic liquid represented by the following chemical formula (I): [(CH3)3N(CH2)2OH]+[NH2-L-COO]???(I) where L is —(CH2)2— or —(CH2)3—. The present invention also provides an ionic liquid composition containing an ionic liquid; and water. The ionic liquid is represented by the above chemical formula (I). A molar ratio of [(CH3)3N(CH2)2OH]+ to [NH2-L-COO]? is not less than 0.86 and not more than 1.12. A weight ratio of the water to the ionic liquid composition is not more than 4.7%. The present invention provides an ionic liquid capable of dissolving cellulose without an cellulose-degrading enzyme (namely, an enzyme capable of hydrolyzing cellulose).
    Type: Application
    Filed: March 6, 2018
    Publication date: September 27, 2018
    Inventors: TAKAHIRO AOKI, TOMOKO KAWASHIMA, HARUKA KUSUKAME, YUKO TANIIKE
  • IONIC LIQUID COMPOSITION AND METHOD FOR DISSOLVING CELLULOSE USING THE SAME
    Publication number: 20180215942
    Abstract: The present invention provides an ionic liquid composition containing an ionic liquid and water. The ionic liquid composition does not contain an enzyme capable of hydrolyzing cellulose. The ionic liquid is represented by the following chemical formula (I): [(CH3)3N(CH2)2OH]+[NH2-L-CHNH2—COO]? (I); where L is absent or a linker. A molar ratio of [(CH3)3N(CH2)2OH]+ to [NH2-L-CHNH2—COO]? is not less than 0.87 and not more than 1.14. A weight ratio of the water to the ionic liquid composition is not more than 7.3%. The present invention provides an ionic liquid composition capable of dissolving cellulose without a cellulose-degrading enzyme, namely, an enzyme capable of hydrolyzing cellulose.
    Type: Application
    Filed: January 12, 2018
    Publication date: August 2, 2018
    Inventors: TAKAHIRO AOKI, TOMOKO KAWASHIMA, HARUKA KUSUKAME, YUKO TANIIKE
  • Image processing apparatus, image processing method, and computer-readable recording medium
    Patent number: 10002441
    Abstract: An image processing apparatus includes an imaging unit that divides an image of a subject into blocks, a quadric-surface fitting unit that calculates a distance from a reference position to the subject that corresponds to each block, a weight calculating unit that calculates a weight of each block according to the distance, and a barycenter calculating unit that corrects information about a size of the subject projected in each block based on the weight, and calculates barycentric coordinates based on the corrected information about the size of the subject.
    Type: Grant
    Filed: October 26, 2016
    Date of Patent: June 19, 2018
    Assignee: FUJITSU LIMITED
    Inventor: Takahiro Aoki
  • Fuel cell separator, fuel cell current collector plate, fuel cell and fuel cell stack
    Patent number: 9991524
    Abstract: In a fuel cell separator and the like, a technology for reducing the separation of a flow path rib which rectifies the flow of a fluid is desired. A separator used in a fuel cell is provided, the separator including: a separator main body that includes a fluid flow region through which a reactive gas or a coolant flows, a through-hole through which the reactive gas or the coolant flows, and a connection portion which connects the fluid flow region and the through-hole; and a flow rectifying portion that is arranged by being adhered on the connection portion and that rectifies flow of the reactive gas or the coolant between the fluid flow region and the through-hole, where the flow rectifying portion includes a plurality of protruded portions and a coupling portion which is thinner than the protruded portions and which couples the protruded portions.
    Type: Grant
    Filed: November 5, 2015
    Date of Patent: June 5, 2018
    Assignees: Toyota Jidosha Kabushiki Kaisha, Sumitomo Riko Company Limited
    Inventors: Kenji Sato, Hiroki Itakura, Takahiro Aoki
  • IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND COMPUTER-READABLE STORAGE MEDIUM
    Publication number: 20180150712
    Abstract: An image processing apparatus approximates a three-dimensional shape of a target object, acquired from an image of of the target object, by a quadric surface, applies a plane expansion process that expands the quadric surface into an expansion plane, to data of the image, computes corresponding points before and after the plane expansion process, and generates normalized data of the image from the corresponding points that are computed. The corresponding points are computed based on a point on a straight line of the expansion plane in contact with a point on the quadric surface and corresponding to a reference point on the target object, and an intersection point of an imaginary straight line, passing through the point on the straight line and extending in a direction of a first normal vector with respect to the straight line, and a quadratic curve of the quadric surface.
    Type: Application
    Filed: November 6, 2017
    Publication date: May 31, 2018
    Applicant: FUJITSU LIMITED
    Inventor: Takahiro Aoki
  • IONIC LIQUID AND METHOD FOR DISSOLVING CELLULOSE USING THE SAME
    Publication number: 20180105890
    Abstract: The present invention provides an ionic liquid represented by the following chemical formula, [(CH3)3N(CH2)2OH]+[NH2(CH2)3CH(NH2)COO]?. The present invention provides an ionic liquid capable of dissolving cellulose within twenty-four hours.
    Type: Application
    Filed: August 8, 2017
    Publication date: April 19, 2018
    Inventors: TAKAHIRO AOKI, TOMOKO KAWASHIMA, HARUKA KUSUKAME, YUKO TANIIKE
  • METHOD, APPARATUS, AND NON-TRANSITORY COMPUTER-READABLE STORAGE MEDIUM FOR VERIFICATION PROCESS
    Publication number: 20180089527
    Abstract: A method for a verification process that performs neighbor discovery for one or more feature points projected to an m-dimensional space (m is a natural number equal to or greater than 2), includes: acquiring a feature point group including one or more feature points projected to coordinate values of the m-dimensional space ordered in a coordinate value order on each of two or more coordinate axes that define the m-dimensional spacer (m is a natural number equal to or greater than 2); selecting a datum axis on which a comparison time number in neighbor discovery is small, the comparison time number being obtained by performing simulation of neighbor discovery.
    Type: Application
    Filed: September 14, 2017
    Publication date: March 29, 2018
    Applicant: FUJITSU LIMITED
    Inventor: Takahiro AOKI
  • SPEAKER
    Publication number: 20180084345
    Abstract: A speaker in the present disclosure includes a magnetic circuit having a magnetic gap, a frame fixed to the magnetic circuit, a voice coil disposed in the magnetic gap, a cylindrical bobbin around which the voice coil is formed, and a diaphragm configured so that the inner circumferential side of the diaphragm is fixed to the bobbin and the outer edge of the diaphragm is supported by the frame with an edge member intervening therebetween. The diaphragm has an elliptical shape that is non-axisymmetric with respect to a center axis passing through the center of the bobbin. The diaphragm is formed by vacuum molding of a sheet-like raw material (thermoplastic CFRP sheet) in which long-fiber fillers are oriented in one direction in a thermoplastic resin. The orientation of the long-fiber fillers is set so as to match the short-axis direction of the diaphragm.
    Type: Application
    Filed: August 2, 2017
    Publication date: March 22, 2018
    Applicant: ALPINE ELECTRONICS, INC.
    Inventors: Kei TANABE, Masami ANZAI, Yu YAMAGAMI, Takahiro AOKI, Yusuke YOSHIDA
  • Image processing device and image processing method
    Patent number: 9858468
    Abstract: A processor estimates a shape of a subject on the basis of an image of the subject, and a memory stores the shape of the subject. The processor generates a quadratic surface connecting a plurality of points on the subject on the basis of the shape of the subject, and develops each of the plurality of points to a planar surface contacting the quadratic surface. Thereafter the processor corrects the image of the subject on the basis of a position of each of the plurality of points developed to the planar surface.
    Type: Grant
    Filed: February 24, 2016
    Date of Patent: January 2, 2018
    Assignee: FUJITSU LIMITED
    Inventor: Takahiro Aoki
  • Image pickup device
    Patent number: 9846813
    Abstract: A device includes an illumination device that casts light of a prescribed polarization direction on a scattering body, a camera that picks up images of the scattering body at a plurality of different polarization angles, and a processor that executes a process of generating and outputting an inner layer image, of an inner layer of an inside of the scattering body, in response to a depth from a surface of the scattering body on the basis of the images of the scattering body picked up at the plurality of different polarization angles.
    Type: Grant
    Filed: February 23, 2016
    Date of Patent: December 19, 2017
    Assignees: FUJITSU LIMITED, FUJITSU FRONTECH LIMITED
    Inventors: Takahiro Aoki, Soichi Hama, Isao Iwaguchi
  • Biometric information registration device and method
    Patent number: 9798958
    Abstract: A biometric information registration device includes: a memory; and a processor coupled to the memory and configured to: collect a plurality of biometric information extracted from a plurality of images of a subject, classify a posture of the subject in each of the plurality of images into one of a plurality of classes, count a number of postures that corresponds to each of the plurality of classes, and store biometric information, from among the plurality of biometric information, associated with a certain class for which the number exceeds a threshold.
    Type: Grant
    Filed: November 26, 2014
    Date of Patent: October 24, 2017
    Assignee: FUJITSU LIMITED
    Inventors: Hajime Nada, Takahiro Aoki
  • BIOMETRIC AUTHENTICATION DEVICE, BIOMETRIC AUTHENTICATION METHOD, AND COMPUTER-READABLE NON-TRANSITORY MEDIUM
    Publication number: 20170262693
    Abstract: A biometric authentication device includes: a memory; and a processor coupled to the memory and the processor configured to execute a process, the process comprising: acquiring a plurality of sets of palm images taken under different illumination conditions of an illumination source from one another in obtaining images of a palm with light emitted from the illumination source; adjusting a time interval at which the imaging device acquires the image sets, in accordance with a condition for imaging the palm; extracting a biological feature from each of the image sets; and comparing each biological feature extracted by the extracting with a biological feature registered in advance.
    Type: Application
    Filed: February 15, 2017
    Publication date: September 14, 2017
    Applicant: FUJITSU LIMITED
    Inventor: Takahiro Aoki
  • Image correction apparatus and image correction method
    Patent number: 9754148
    Abstract: An image correction apparatus includes a correction amount calculating unit which calculates, in response to a position of a hand on an image, a correction amount for placing the hand to face an imaging unit included in an image acquiring unit for generating the image; and a correcting unit which corrects an estimated coordinate representing a position of a point in a real space corresponding to each pixel included in a region in which the hand is captured in the image in accordance with the correction amount, and projects each of the points after the correction on a corrected image to generate the corrected image.
    Type: Grant
    Filed: March 3, 2015
    Date of Patent: September 5, 2017
    Assignee: FUJITSU LIMITED
    Inventors: Soichi Hama, Takahiro Aoki, Mitsuaki Fukuda
  • Image correction apparatus and image correction method
    Patent number: 9721136
    Abstract: An image correction apparatus includes a correction amount calculating unit which calculates, in response to a position of a hand on an image, a correction amount for placing the hand to face an imaging unit included in an image acquiring unit for generating the image; and a correcting unit which corrects an estimated coordinate representing a position of a point in a real space corresponding to each pixel included in a region in which the hand is captured in the image in accordance with the correction amount, and projects each of the points after the correction on a corrected image to generate the corrected image.
    Type: Grant
    Filed: March 3, 2015
    Date of Patent: August 1, 2017
    Assignee: FUJITSU LIMITED
    Inventors: Soichi Hama, Takahiro Aoki, Mitsuaki Fukuda
  • IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND COMPUTER-READABLE RECORDING MEDIUM
    Publication number: 20170132805
    Abstract: An image processing apparatus includes an imaging unit that divides an image of a subject into blocks, a quadric-surface fitting unit that calculates a distance from a reference position to the subject that corresponds to each block, a weight calculating unit that calculates a weight of each block according to the distance, and a barycenter calculating unit that corrects information about a size of the subject projected in each block based on the weight, and calculates barycentric coordinates based on the corrected information about the size of the subject.
    Type: Application
    Filed: October 26, 2016
    Publication date: May 11, 2017
    Applicant: FUJITSU LIMITED
    Inventor: Takahiro Aoki
  • Imaging device
    Patent number: 9644943
    Abstract: An imaging device includes: an imaging element that take an image of a subject; and a plurality of light sources that radiate a light to the subject, wherein optical axes of the plurality of the light sources are inclined outward with respect to an optical axis of the imaging element.
    Type: Grant
    Filed: September 11, 2014
    Date of Patent: May 9, 2017
    Assignee: FUJITSU LIMITED
    Inventor: Takahiro Aoki
  • BIOMETRIC IMAGE CAPTURING APPARATUS AND BIOMETRIC IMAGE CAPTURING METHOD
    Publication number: 20170091568
    Abstract: A biometric image capturing apparatus includes an irradiating unit configured to irradiate a subject with light, a camera configured to capture an image of the subject, a polarizing unit which is disposed on an optical path between the irradiating unit and the camera, and configured to allow passage of light in a first polarization direction and light in a second polarization direction, a processor configured to perform computation using a first image captured by the camera according to the light in the first polarization direction that has passed through the polarizing unit and a second image captured by the camera according to the light in the second polarization direction that has passed through the polarizing unit, and to determine whether the subject is a biological body according to a result of the computation performed by the computing unit.
    Type: Application
    Filed: September 27, 2016
    Publication date: March 30, 2017
    Applicants: FUJITSU LIMITED, FUJITSU FRONTECH LIMITED
    Inventors: SOICHI HAMA, Takahiro Aoki, ISAO IWAGUCHI
  • Image processing apparatus, biometric authentication apparatus, and image processing apparatus
    Patent number: 9495576
    Abstract: An image processing apparatus includes a light source to irradiate light on an object, an imaging device to capture the object, a luminance computing unit to compute a luminance at a plurality of positions on the object, and a coefficient computing unit. The coefficient computing unit computes a correction coefficient for each of the plurality of positions, according to a distance from the light source to each of the plurality of positions and the luminance at each of the plurality of positions.
    Type: Grant
    Filed: January 14, 2015
    Date of Patent: November 15, 2016
    Assignee: FUJITSU LIMITED
    Inventor: Takahiro Aoki