Patents by Inventor Kei Tokui

Kei Tokui 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: 10264237
    Abstract: As to N images captured at different focus positions, which are arrayed in order of focus positions, N/2 images are set as feature point extraction images so that at least one of two adjacent images becomes a feature point extraction image; corresponding points corresponding to a feature point, extracted from the feature point extraction image, are searched for from the other images; a correction parameter, with which corresponding positions of the N images are matched, is calculated from a positional relation of the feature point and the corresponding points; and, with an image whose view angle is the smallest among the N images as a reference, the other images are corrected.
    Type: Grant
    Filed: November 4, 2014
    Date of Patent: April 16, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Keisuke Omori, Kei Tokui
  • Publication number: 20190026921
    Abstract: A measuring device (1) includes an analyzing unit (201) that determines whether there is an occlusion region around a measuring point candidate position configured by a user and a measuring point configuring unit (203) that, in a case that it is determined that there is an occlusion region, uses an image other than an initial reference image as a reference image and configures a measuring point on the reference image.
    Type: Application
    Filed: August 15, 2016
    Publication date: January 24, 2019
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: DAISUKE MURAYAMA, KEI TOKUI
  • Patent number: 10147169
    Abstract: Provided is an image processing device, including: a distance calculator that calculates distance information corresponding to at least one image among a plurality of input images; and an image generator that generates an output image with a shallow depth of field based on the distance information, in which the distance calculator calculates distance information from a plurality of contrast calculation regions sizes of which are different, and the image generator calculates a pixel value of an output image by smoothing a pixel value of the input image based on the distance information.
    Type: Grant
    Filed: September 9, 2015
    Date of Patent: December 4, 2018
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Keisuke Omori, Kei Tokui
  • Patent number: 10091489
    Abstract: An image capturing device includes at least two image sensors and an image processing unit that performs image processing on image information that is captured by image sensors and an image display unit that displays the image information on which the image processing is performed by the image processing unit. The image processing unit displays two base points on the image display unit in a same direction as a direction in which the two image sensors are arranged, calculates a disparity value between a first base point and a second base point that are the two base points with the two image sensors, calculates a length between the first base point and the second base point, and displays a result of calculation of the length between the first base point and the second base point on the image display unit.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: October 2, 2018
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Daisuke Murayama, Kenichi Iwauchi, Kei Tokui, Yasutaka Wakabayashi, Shinichi Arita, Nao Shibuhisa
  • Patent number: 10074179
    Abstract: An image measurement device acquires a first measurement region and a second measurement region on an image, acquires distance information corresponding to the first measurement region and distance information corresponding to the second measurement region, and computes a distance between the two regions. In a case where the first measurement region is displaced on the image, the second measurement region is displaced on a contour or a plane on the image, and a distance between the first measurement region after the displacement and the second measurement region after the displacement is computed. Thereby, distance measurement is able to be performed over a wide range without a complicated operation in the image measurement device for measuring a distance between two regions by using an image.
    Type: Grant
    Filed: April 28, 2014
    Date of Patent: September 11, 2018
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Shinichi Arita, Kei Tokui
  • Patent number: 9948848
    Abstract: First image information whose depth of field includes a subject in a focus position set by a control section before photo shooting and second image information captured in a position focus different from that of the first image information are included. The focus position of the second image information is determined on the basis of the focus position of the first image information. The first image information is stored together with an image with an extended depth of field. This makes it possible to provide an imaging device which, when obtaining an extended depth of field from a plurality of images of different focus positions, can reduce failures in photo shooting due to a movement of a subject or camera shake.
    Type: Grant
    Filed: April 21, 2014
    Date of Patent: April 17, 2018
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Kei Tokui
  • Patent number: 9888163
    Abstract: Provided is an imaging device, including: an image acquisition unit for acquiring a plurality of images having different focal positions; an orientation acquisition unit for acquiring orientation information of the image acquisition unit; and an image processing unit for generating, from the plurality of images, an image having a depth of field which is enlarged compared to a depth of field of one of the plurality of images, in which a focal position setting value by which the focal position is determined is provided, and the focal position setting value is corrected based on the orientation information.
    Type: Grant
    Filed: August 5, 2014
    Date of Patent: February 6, 2018
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Daisuke Murayama, Kei Tokui
  • Patent number: 9832390
    Abstract: A first photographing mode in which plural pieces of image information are acquired while a configuration of an exposure is fixed and a focus position is changed and a second photographing mode in which plural pieces of the image information are acquired while the focus position is fixed and the configuration of the exposure is changed are included, and image processing is performed from the pieces of image information that are acquired in the first photographing mode and the second photographing mode.
    Type: Grant
    Filed: February 17, 2015
    Date of Patent: November 28, 2017
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Kei Tokui
  • Publication number: 20170330307
    Abstract: Provided is an image processing device, including: a distance calculator that calculates distance information corresponding to at least one image among a plurality of input images; and an image generator that generates an output image with a shallow depth of field based on the distance information, in which the distance calculator calculates distance information from a plurality of contrast calculation regions sizes of which are different, and the image generator calculates a pixel value of an output image by smoothing a pixel value of the input image based on the distance information.
    Type: Application
    Filed: September 9, 2015
    Publication date: November 16, 2017
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Keisuke OMORI, Kei TOKUI
  • Publication number: 20170293999
    Abstract: An image processing device including a blurring processing unit that performs blurring processing for input image information that is input, includes: a saturation determination unit that calculates saturation of a saturated pixel of the input image information; a first gradation conversion unit that converts gradation of the input image information on a basis of the saturation calculated by the saturation determination unit; and, in which the blurring processing unit performs blurring processing for image information that has been subjected to gradation conversion by the first gradation conversion unit, a second gradation conversion unit that converts gradation of image information that has been subjected to the blurring processing, on a basis that gradation of a saturated region of the blurring-processed image information serves as a gradation of a saturated pixel.
    Type: Application
    Filed: August 27, 2015
    Publication date: October 12, 2017
    Inventors: Kei TOKUI, Keisuke OMORI
  • Patent number: 9756241
    Abstract: An image capturing apparatus including an image capturing unit that captures an image, a focus control unit that controls a focus of the image capturing unit, an object selection reception unit that receives a selection operation of an object, and an image processing unit that performs image processing of an image that is captured by the image capturing unit, in which the image capturing unit captures plural images in which the focus is changed by the focus control unit, at least one of the plural images is captured based on a focal position of a selected object that is received by the object selection reception unit, and the image processing unit generates an image in which a depth of field is expanded compared to the one captured image from the plural images.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: September 5, 2017
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Keisuke Omori, Kei Tokui
  • Patent number: 9729844
    Abstract: In the related art, it was difficult to compare lengths of a plurality of objects which were present at different places. However, it is possible to easily compare lengths of photographed objects using an image capturing device which displays a length of an object which is calculated based on parallax information, by obtaining an image in which the object is photographed and the parallax information corresponding to the image as inputs, the device including an object extraction unit which extracts an image of an object using the parallax information from the photographed image; a comparison data maintaining unit which maintains the image of the object and the length of the object; an object comparison unit which compares the length of the object which is extracted using the object extraction unit to a length of comparison data which is extracted from the comparison data maintaining unit; and an image composition unit which combines a comparison result with the photographed image, and outputs the image.
    Type: Grant
    Filed: April 3, 2013
    Date of Patent: August 8, 2017
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Nao Shibuhisa, Kei Tokui, Yasutaka Wakabayashi, Shinichi Arita, Daisuke Murayama
  • Patent number: 9646383
    Abstract: An image processing apparatus includes an image processing intensity determination unit that determines an intensity of image processing and an image processing unit that performs the image processing to image information in accordance with the intensity determined by the image processing intensity determination unit. The image processing intensity determination unit determines the intensity of the image processing at a target pixel included in the image information on the basis of a depth value indicating a depth corresponding to the target pixel and a vertical position of the target pixel in the image information.
    Type: Grant
    Filed: December 19, 2012
    Date of Patent: May 9, 2017
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Kei Tokui, Shigeaki Mizushima
  • Publication number: 20170048443
    Abstract: A first photographing mode in which plural pieces of image information are acquired while a configuration of an exposure is fixed and a focus position is changed and a second photographing mode in which plural pieces of the image information are acquired while the focus position is fixed and the configuration of the exposure is changed are included, and image processing is performed from the pieces of image information that are acquired in the first photographing mode and the second photographing mode.
    Type: Application
    Filed: February 17, 2015
    Publication date: February 16, 2017
    Inventor: Kei TOKUI
  • Patent number: 9438877
    Abstract: A disparity calculating device 100 obtains a base image from a first camera 1 and a reference image from a second camera 2. An image dividing unit 101 divides each of the base image and reference image into multiple regions in accordance with dividing conditions set by a condition setting unit 102. A correction amount determining 103 calculates image shift amount for each of the divided regions, and determines correction amount based on the images shift amount thereof. A disparity calculating unit 104 performs correction of the image on each region of divided base images and divided reference images obtained from the image dividing unit 101 based on correction amount determined by the correction amount determining unit 103 to obtain disparity based on the images after correction.
    Type: Grant
    Filed: March 22, 2012
    Date of Patent: September 6, 2016
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yasutaka Wakabayashi, Kei Tokui
  • Publication number: 20160247288
    Abstract: As to N images captured at different focus positions, which are arrayed in order of focus positions, N/2 images are set as feature point extraction images so that at least one of two adjacent images becomes a feature point extraction image; corresponding points corresponding to a feature point, extracted from the feature point extraction image, are searched for from the other images; a correction parameter, with which corresponding positions of the N images are matched, is calculated from a positional relation of the feature point and the corresponding points; and, with an image whose view angle is the smallest among the N images as a reference, the other images are corrected.
    Type: Application
    Filed: November 4, 2014
    Publication date: August 25, 2016
    Inventors: Keisuke OMORI, Kei TOKUI
  • Publication number: 20160191784
    Abstract: Provided is an imaging device, including: an image acquisition unit for acquiring a plurality of images having different focal positions; an orientation acquisition unit for acquiring orientation information of the image acquisition unit; and an image processing unit for generating, from the plurality of images, an image having a depth of field which is enlarged compared to a depth of field of one of the plurality of images, in which a focal position setting value by which the focal position is determined is provided, and the focal position setting value is corrected based on the orientation information.
    Type: Application
    Filed: August 5, 2014
    Publication date: June 30, 2016
    Inventors: Daisuke MURAYAMA, Kei TOKUI
  • Publication number: 20160142618
    Abstract: First image information whose depth of field includes a subject in a focus position set by a control section before photo shooting and second image information captured in a position focus different from that of the first image information are included. The focus position of the second image information is determined on the basis of the focus position of the first image information. The first image information is stored together with an image with an extended depth of field. This makes it possible to provide an imaging device which, when obtaining an extended depth of field from a plurality of images of different focus positions, can reduce failures in photo shooting due to a movement of a subject or camera shake.
    Type: Application
    Filed: April 21, 2014
    Publication date: May 19, 2016
    Inventor: Kei TOKUI
  • Publication number: 20160086322
    Abstract: An image measurement device acquires a first measurement region and a second measurement region on an image, acquires distance information corresponding to the first measurement region and distance information corresponding to the second measurement region, and computes a distance between the two regions. In a case where the first measurement region is displaced on the image, the second measurement region is displaced on a contour or a plane on the image, and a distance between the first measurement region after the displacement and the second measurement region after the displacement is computed. Thereby, distance measurement is able to be performed over a wide range without a complicated operation in the image measurement device for measuring a distance between two regions by using an image.
    Type: Application
    Filed: April 28, 2014
    Publication date: March 24, 2016
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Shinichi ARITA, Kei TOKUI
  • Publication number: 20160028948
    Abstract: An image capturing apparatus including an image capturing unit that captures an image, a focus control unit that controls a focus of the image capturing unit, an object selection reception unit that receives a selection operation of an object, and an image processing unit that performs image processing of an image that is captured by the image capturing unit, in which the image capturing unit captures plural images in which the focus is changed by the focus control unit, at least one of the plural images is captured based on a focal position of a selected object that is received by the object selection reception unit, and the image processing unit generates an image in which a depth of field is expanded compared to the one captured image from the plural images.
    Type: Application
    Filed: March 27, 2014
    Publication date: January 28, 2016
    Inventors: Keisuke OMORI, Kei TOKUI