Patents by Inventor Makoto Nokita

Makoto Nokita 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).

  • Image processing method and apparatus and X-ray imaging apparatus implementing image sharpening processing
    Patent number: 8670040
    Abstract: In an image processing method of processing an image obtained from an image sensor, the resolution distribution of the image sensor is held in a memory, and a resolution corresponding to a pixel of interest of the image is acquired from the resolution distribution of the image sensor which is held in the memory. Sharpening processing having the sharpening level selected on the basis of the acquired resolution is executed for the pixel of interest.
    Type: Grant
    Filed: June 1, 2004
    Date of Patent: March 11, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Makoto Nokita
  • Radiation image processing apparatus, image processing system, radiation image processing method, storage medium, and program
    Patent number: 7639856
    Abstract: The disclosure is made for an apparatus for processing a radiation image of an object obtained by radiography using a grid which is used to remove scattered radiation from the object. The apparatus includes generation means for generating image components due to the grid on the basis of data of the radiation image, to remove the image components due to the grid from the radiation image.
    Type: Grant
    Filed: September 5, 2006
    Date of Patent: December 29, 2009
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hitoshi Inoue, Makoto Nokita
  • X-ray imaging apparatus and method
    Patent number: 7382859
    Abstract: Since a notification unit (130) notifies a radiographer of the driving state of an X-ray detector (110), he/she can identify that the X-ray detector (110) is set in a detection signal accumulation state. When the irradiation button of an X-ray generation apparatus is then pressed, a subject can be irradiated with X-rays.
    Type: Grant
    Filed: June 22, 2004
    Date of Patent: June 3, 2008
    Assignee: Canon Kabushiki Kaisha
    Inventors: Makoto Nokita, Osamu Tsujii
  • RADIATION IMAGE PROCESSING APPARATUS, IMAGE PROCESSING SYSTEM, RADIATION IMAGE PROCESSING METHOD, STORAGE MEDIUM, AND PROGRAM
    Publication number: 20070019847
    Abstract: The disclosure is made for an apparatus for processing a radiation image of an object obtained by radiography using a grid which is used to remove scattered radiation from the object. The apparatus includes generation means for generating image components due to the grid on the basis of data of the radiation image, to remove the image components due to the grid from the radiation image.
    Type: Application
    Filed: September 5, 2006
    Publication date: January 25, 2007
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: HITOSHI INOUE, Makoto Nokita
  • Radiation image processing apparatus, image processing system, radiation image processing method, storage medium, and program
    Patent number: 7142705
    Abstract: The disclosure is made for an apparatus for processing a radiation image of an object obtained by radiography using a grid which is used to remove scattered radiation from the object. The apparatus includes generation means for generating image components due to the grid on the basis of data of the radiation image, to remove the image components due to the grid from the radiation image.
    Type: Grant
    Filed: April 25, 2002
    Date of Patent: November 28, 2006
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hitoshi Inoue, Makoto Nokita
  • Radiographic apparatus and radiographic method
    Patent number: 7129499
    Abstract: A radiographic apparatus includes a radiation irradiating unit for applying radiation; a radiation imaging unit, including a plurality of imagers, for converting the radiation to image data; a determining unit for determining whether noise caused by residual charge is produced, from the distribution of the residual charge in the radiation imaging unit based on the image data; and a controlling unit for changing a driving state of the radiation imaging unit based on the determination result.
    Type: Grant
    Filed: June 18, 2004
    Date of Patent: October 31, 2006
    Assignee: Canon Kabushiki Kaisha
    Inventor: Makoto Nokita
  • X-ray computed tomography apparatus
    Patent number: 6839401
    Abstract: In order to remove a scattered line component resulting from an object from projection data to obtain a satisfactory rearrangement image, an amount of scattered line is calculated from a region in which a first-order X-ray is shielded by an X-ray shield and a component corresponding to the scattered line is removed. Then, an image in the region in which the first-order X-ray is shielded is complemented based on an image taken from a 180-degree opposite direction.
    Type: Grant
    Filed: November 17, 2003
    Date of Patent: January 4, 2005
    Assignee: Canon Kabushiki Kaisha
    Inventor: Makoto Nokita
  • Radiographic apparatus and radiographic method
    Publication number: 20040256567
    Abstract: A radiographic apparatus includes a radiation irradiating unit for applying radiation; a radiation imaging unit, including a plurality of imagers, for converting the radiation to image data; a determining unit for determining whether noise caused by residual charge is produced, from the distribution of the residual charge in the radiation imaging unit based on the image data; and a controlling unit for changing a driving state of the radiation imaging unit based on the determination result.
    Type: Application
    Filed: June 18, 2004
    Publication date: December 23, 2004
    Inventor: Makoto Nokita
  • X-ray imaging apparatus and method
    Publication number: 20040258204
    Abstract: Since a notification unit (130) notifies a radiographer of the driving state of an X-ray detector (110), he/she can identify that the X-ray detector (110) is set in a detection signal accumulation state. When the irradiation button of an X-ray generation apparatus is then pressed, a subject can be irradiated with X-rays.
    Type: Application
    Filed: June 22, 2004
    Publication date: December 23, 2004
    Inventors: Makoto Nokita, Osamu Tsujii
  • Image processing method and apparatus and X-ray imaging apparatus
    Publication number: 20040246347
    Abstract: In an image processing method of processing an image obtained from an image sensor, the resolution distribution of the image sensor is held in a memory, and a resolution corresponding to a pixel of interest of the image is acquired from the resolution distribution of the image sensor which is held in the memory. Sharpening processing having the sharpening level selected on the basis of the acquired resolution is executed for the pixel of interest.
    Type: Application
    Filed: June 1, 2004
    Publication date: December 9, 2004
    Inventor: Makoto Nokita
  • Radiography apparatus, radiography method, radiography program, and recording medium
    Publication number: 20040234032
    Abstract: A radiography apparatus comprises an X-ray irradiation unit to irradiate an object with radiation, an X-ray detector which converts radiation projection images obtained by transmission through an object into signals and is capable of non-destructive readout of the signals, and an image analyzing unit for analyzing the signals read out by non-destructive readout from the X-ray detector. This allows information relating to the radiation which has been transmitted through an object such as a subject to be quickly comprehended.
    Type: Application
    Filed: May 14, 2004
    Publication date: November 25, 2004
    Applicant: Canon Kabushiki Kaisha
    Inventor: Makoto Nokita
  • Radiographic apparatus, radiographic method, and computer-readable storage medium
    Patent number: 6795528
    Abstract: A radiographic apparatus is disclosed which controls a movement of a reciprocatingly moving grid so that the grid is not or less likely returned in the middle of exposure of an object to X rays. The probability that the object is still exposed to the X rays when the grid is moved in the vicinity of a turning point is thus substantially lowered. Therefore the probability that a resulting radiograph has no or less moire pattern due to the grid is substantially heightened.
    Type: Grant
    Filed: January 4, 2002
    Date of Patent: September 21, 2004
    Assignee: Canon Kabushiki Kaisha
    Inventor: Makoto Nokita
  • X-ray computed tomography apparatus
    Publication number: 20040161073
    Abstract: In order to remove a scattered line component resulting from an object from projection data to obtain a satisfactory rearrangement image, an amount of scattered line is calculated from a region in which a first-order X-ray is shielded by an X-ray shield and a component corresponding to the scattered line is removed. Then, an image in the region in which the first-order X-ray is shielded is complemented based on an image taken from a 180-degree opposite direction.
    Type: Application
    Filed: November 17, 2003
    Publication date: August 19, 2004
    Inventor: Makoto Nokita
  • Radiation image processing apparatus, image processing system, radiation image processing method, storage medium, and program
    Publication number: 20030016854
    Abstract: The disclosure is made for an apparatus for processing a radiation image of an object obtained by radiography using a grid which is used to remove scattered radiation from the object.
    Type: Application
    Filed: April 25, 2002
    Publication date: January 23, 2003
    Inventors: Hitoshi Inoue, Makoto Nokita
  • Radiographic apparatus, radiographic method, and computer-readable storage medium
    Publication number: 20020101960
    Abstract: A radiographic apparatus is disclosed which controls a movement of a reciprocatingly moving grid so that the grid is not or less likely returned in the middle of exposure of an object to X rays. The probability that the object is still exposed to the X rays when the grid is moved in the vicinity of a turning point is thus substantially lowered. Therefore the probability that a resulting radiograph has no or less moire pattern due to the grid is substantially heightened.
    Type: Application
    Filed: January 4, 2002
    Publication date: August 1, 2002
    Inventor: Makoto Nokita