Patents by Inventor Yasunari Nagamatsu

Yasunari Nagamatsu 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: 11900571
    Abstract: For example, in order to enable an RCCB sensor or a specific optical system to perform an appropriate image correction process (distortion correction and the like), an imaging device includes an imaging element, an optical system configured to form an image on an imaging surface of the imaging element and has a characteristic in which an image formation magnification differs depending on a position in the imaging surface, a demosaic unit configured to generate color image data of at least two colors from the data output from the imaging element, and a distortion correction unit configured to correct distortion of the color image data of at least two colors generated by the demosaic unit.
    Type: Grant
    Filed: March 23, 2022
    Date of Patent: February 13, 2024
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yasunari Nagamatsu, Yusuke Yamamoto, Tohru Oyama
  • Patent number: 11557050
    Abstract: A distance measurement accuracy is improved without increasing power consumption of an image processing apparatus that performs distance-measuring processing. In one embodiment, an image processing apparatus for calculating distance information on an image has a reliability calculation unit 113 configured to calculate reliability in accordance with contrast for each pixel of the image and a distance calculation unit 116 configured to calculate distance information on each of the pixels based on reliability of each of the pixels. The distance calculation unit 116 calculates the distance information about a second pixel group whose reliability is lower than that of a first pixel group by using a collation area whose size is larger than a predetermined size in a range in which an amount of calculation in a case where a collation area of the predetermined size is used for all the pixels of the image is not exceeded.
    Type: Grant
    Filed: October 16, 2020
    Date of Patent: January 17, 2023
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Yasunari Nagamatsu
  • Patent number: 11527003
    Abstract: A distance measurement accuracy is improved without increasing power consumption of an image processing apparatus that performs distance-measuring processing. In one embodiment, an image processing apparatus for calculating distance information on an image has a reliability calculation unit 113 configured to calculate reliability in accordance with contrast for each pixel of the image and a distance calculation unit 116 configured to calculate distance information on each of the pixels based on reliability of each of the pixels. The distance calculation unit 116 calculates the distance information about a second pixel group whose reliability is lower than that of a first pixel group by using a collation area whose size is larger than a predetermined size in a range in which an amount of calculation in a case where a collation area of the predetermined size is used for all the pixels of the image is not exceeded.
    Type: Grant
    Filed: October 16, 2020
    Date of Patent: December 13, 2022
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Yasunari Nagamatsu
  • Publication number: 20220318959
    Abstract: For example, in order to enable an RCCB sensor or a specific optical system to perform an appropriate image correction process (distortion correction and the like), an imaging device includes an imaging element, an optical system configured to form an image on an imaging surface of the imaging element and has a characteristic in which an image formation magnification differs depending on a position in the imaging surface, a demosaic unit configured to generate color image data of at least two colors from the data output from the imaging element, and a distortion correction unit configured to correct distortion of the color image data of at least two colors generated by the demosaic unit.
    Type: Application
    Filed: March 23, 2022
    Publication date: October 6, 2022
    Inventors: Yasunari Nagamatsu, Yusuke Yamamoto, Tohru Oyama
  • Publication number: 20210142495
    Abstract: A distance measurement accuracy is improved without increasing power consumption of an image processing apparatus that performs distance-measuring processing. In one embodiment, an image processing apparatus for calculating distance information on an image has a reliability calculation unit 113 configured to calculate reliability in accordance with contrast for each pixel of the image and a distance calculation unit 116 configured to calculate distance information on each of the pixels based on reliability of each of the pixels. The distance calculation unit 116 calculates the distance information about a second pixel group whose reliability is lower than that of a first pixel group by using a collation area whose size is larger than a predetermined size in a range in which an amount of calculation in a case where a collation area of the predetermined size is used for all the pixels of the image is not exceeded.
    Type: Application
    Filed: October 16, 2020
    Publication date: May 13, 2021
    Inventor: Yasunari Nagamatsu
  • Publication number: 20150222810
    Abstract: It is required to carry out a tapping operation on a display screen to adjust the focus in a case where refocus process is performed in shifting to a reproduction mode, so that a user has to do an extra work. An image processing apparatus obtains a multi-view image data obtained by image-capturing in a plurality of viewpoints. A mode indicating information on a target to be focused is set. A combined image data focused on the target is generated by executing image processing to the multi-view image data based on the set mode.
    Type: Application
    Filed: April 13, 2015
    Publication date: August 6, 2015
    Inventor: Yasunari Nagamatsu
  • Patent number: 9036072
    Abstract: It is required to carry out a tapping operation on a display screen to adjust the focus in a case where refocus process is performed in shifting to a reproduction mode, so that a user has to do an extra work. An image processing apparatus obtains a multi-view image data obtained by image-capturing in a plurality of viewpoints. A mode indicating information on a target to be focused is set. A combined image data focused on the target is generated by executing image processing to the multi-view image data based on the set mode.
    Type: Grant
    Filed: June 3, 2013
    Date of Patent: May 19, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yasunari Nagamatsu
  • Publication number: 20130329124
    Abstract: It is required to carry out a tapping operation on a display screen to adjust the focus in a case where refocus process is performed in shifting to a reproduction mode, so that a user has to do an extra work. An image processing apparatus obtains a multi-view image data obtained by image-capturing in a plurality of viewpoints. A mode indicating information on a target to be focused is set. A combined image data focused on the target is generated by executing image processing to the multi-view image data based on the set mode.
    Type: Application
    Filed: June 3, 2013
    Publication date: December 12, 2013
    Inventor: Yasunari Nagamatsu
  • Patent number: 8472720
    Abstract: The performance of image processing is assured by executing region segmentation of an image at high speed. Pixels are classified into clusters conforming to a feature such as color. In a case where a suitable cluster for classifying a pixel is undefined, a new cluster is defined and the pixel is classified into this cluster. An upper-limit value on number of clusters is set prior to classification. If the number of clusters exceeds the upper-limit value, clusters already defined are merged. This limits an increase in the number of clusters.
    Type: Grant
    Filed: July 14, 2010
    Date of Patent: June 25, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yasunari Nagamatsu
  • Patent number: 8140727
    Abstract: A bus arbitration apparatus according to this invention appropriately arbitrates bus rights of use between a plurality of masters and a plurality of slaves so as to efficiently perform requested data transfer. An arbiter A 5 receives data transfer requests with respect to a slave A 3 generated by masters A 1 and B 2. The arbiter A 5 cooperates with an arbiter B 4, and arbitrates a contention of the data transfer requests with respect to the slave A 3 generated by the masters A 1 and B 2.
    Type: Grant
    Filed: May 20, 2011
    Date of Patent: March 20, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toshiaki Minami, Shunichi Kaizu, Yasunari Nagamatsu, Daisuke Shiraishi, Makoto Fujiwara, Koji Moriya, Koichi Morishita
  • Publication number: 20110219156
    Abstract: A bus arbitration apparatus according to this invention appropriately arbitrates bus rights of use between a plurality of masters and a plurality of slaves so as to efficiently perform requested data transfer. An arbiter A 5 receives data transfer requests with respect to a slave A 3 generated by masters A 1 and B 2. The arbiter A 5 cooperates with an arbiter B 4, and arbitrates a contention of the data transfer requests with respect to the slave A 3 generated by the masters A 1 and B 2.
    Type: Application
    Filed: May 20, 2011
    Publication date: September 8, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Toshiaki Minami, Shunichi Kaizu, Yasunari Nagamatsu, Daisuke Shiraishi, Makoto Fujiwara, Koji Moriya, Koichi Morishita
  • Patent number: 7962678
    Abstract: A bus arbitration apparatus according to this invention appropriately arbitrates bus rights of use between a plurality of masters and a plurality of slaves so as to efficiently perform requested data transfer. An arbiter A 5 receives data transfer requests with respect to a slave A 3 generated by masters A 1 and B 2. The arbiter A 5 cooperates with an arbiter B 4, and arbitrates a contention of the data transfer requests with respect to the slave A 3 generated by the masters A 1 and B 2.
    Type: Grant
    Filed: June 12, 2007
    Date of Patent: June 14, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toshiaki Minami, Shunichi Kaizu, Yasunari Nagamatsu, Daisuke Shiraishi, Makoto Fujiwara, Koji Moriya, Koichi Morishita
  • Publication number: 20110019927
    Abstract: The performance of image processing is assured by executing region segmentation of an image at high speed. Pixels are classified into clusters conforming to a feature such as color. In a case where a suitable cluster for classifying a pixel is undefined, a new cluster is defined and the pixel is classified into this cluster. An upper-limit value on number of clusters is set prior to classification. If the number of clusters exceeds the upper-limit value, clusters already defined are merged. This limits an increase in the number of clusters.
    Type: Application
    Filed: July 14, 2010
    Publication date: January 27, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Yasunari Nagamatsu
  • Publication number: 20100223409
    Abstract: A bus arbitration apparatus according to this invention appropriately arbitrates bus rights of use between a plurality of masters and a plurality of slaves so as to efficiently perform requested data transfer. An arbiter A 5 receives data transfer requests with respect to a slave A 3 generated by masters A 1 and B 2. The arbiter A 5 cooperates with an arbiter B 4, and arbitrates a contention of the data transfer requests with respect to the slave A 3 generated by the masters A 1 and B 2.
    Type: Application
    Filed: June 12, 2007
    Publication date: September 2, 2010
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Toshiaki Minami, Shunichi Kaizu, Yasunari Nagamatsu, Daisuke Shiraishi, Makoto Fujiwara, Koji Moriya, Koichi Morishita