Patents by Inventor Eisaku Tatsumi

Eisaku Tatsumi 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: 10380725
    Abstract: Image processing apparatuses, methods and storage mediums for use therewith are provided herein. At least one image processing apparatus includes, a first acquisition unit configured to, in order to generate a converted image having a narrower dynamic range than an input image, acquire gradation values of a plurality of neighborhood pixels positioned in a predetermined range from a processing target pixel of the input image, a second acquisition unit configured to acquire conversion information from a holding unit holding the conversion information used to generate the converted image having a narrower dynamic range than the input image, and a determination unit configured to determine a gradation value of a pixel on the converted image corresponding to the processing target pixel by using the gradation values of the plurality of neighborhood pixels acquired by the first acquisition unit and the conversion information acquired by the second acquisition unit.
    Type: Grant
    Filed: November 16, 2016
    Date of Patent: August 13, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventor: Eisaku Tatsumi
  • Publication number: 20190206027
    Abstract: A display control apparatus obtains a first image in which an input image is represented at a first resolution and inverse gamma converted, and a second image representing the input image at a second resolution lower than the first resolution. The apparatus converts the second image into a third image for which: an inverse gamma conversion is performed; change in tone of each pixel is the same as in the second image; and resolution is represented by the first resolution. The apparatus outputs, for a stack projection, the second image and a corrected image which is obtained by correcting each pixel of the first image based on a difference between a pixel value of each pixel of the first image and a pixel value of each pixel of the third image and applying a gamma correction, and the second image.
    Type: Application
    Filed: December 26, 2018
    Publication date: July 4, 2019
    Inventors: Shinichi Uemura, Eisaku Tatsumi
  • Patent number: 10249031
    Abstract: An image processing apparatus for displaying an image on a display screen, inputs data, specifies at least one of a bright region and a dark region of an image corresponding to the image data, executes, for at least one of the bright region and the dark region, at least one of first chroma processing of increasing a chroma of the bright region, second chroma processing of lowering the chroma of the dark region, first hue processing of making a hue of the bright region close to red, and second hue processing of making the hue of the dark region close to blue in accordance with display dynamic range information corresponding to the display screen, and displays, on the display screen, an image based on corrected image data that has undergone correction.
    Type: Grant
    Filed: September 11, 2015
    Date of Patent: April 2, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventor: Eisaku Tatsumi
  • Patent number: 10230931
    Abstract: To reduce pixel position deviations in a plurality of color component images projected by a projection unit, a projection apparatus obtains, concerning the plurality of color component images projected onto the projection surface, position information concerning a projection position of each of remaining color component images with reference to a projection position of one color component image, and performs image processing for at least one of the plurality of color component images based on the obtained position information.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: March 12, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ryosuke Mizuno, Eisaku Tatsumi
  • Patent number: 10109040
    Abstract: An image processing apparatus comprising: an input unit configured to input image signals which include a first signal and a second signal lower in spatial resolution than the first signal; an obtaining unit configured to obtain information about a spatial high-frequency component of the first signal which is included in the image signals input by the input unit; a generation unit configured to generate an expanded second signal obtained by expanding the spatial resolution of the second signal included in the image signals by using the information about the spatial high-frequency component of the first signal obtained by the obtaining unit; and an output unit configured to output a processed image signal which includes the expanded second signal generated by the generation unit.
    Type: Grant
    Filed: June 6, 2017
    Date of Patent: October 23, 2018
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Eisaku Tatsumi
  • Patent number: 10068314
    Abstract: An image processing apparatus includes: an input unit adapted to input an image; a first acquisition unit adapted to acquire a low-frequency component image from the image input by the input unit; a first transformation unit adapted to transform the low-frequency component image acquired by the first acquisition unit; a second transformation unit adapted to transform the image input by the input unit; a second acquisition unit adapted to acquire a transformed high-frequency component image from the transformed image obtained by the second transformation unit; and a display control unit adapted to display, on a display unit, a combined image obtained by combining the transformed low-frequency component image obtained by the first transformation unit and the transformed high-frequency component image acquired by the second acquisition unit.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: September 4, 2018
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Eisaku Tatsumi
  • Publication number: 20180249138
    Abstract: To reduce pixel position deviations in a plurality of color component images projected by a projection unit, a projection apparatus obtains, concerning the plurality of color component images projected onto the projection surface, position information concerning a projection position of each of remaining color component images with reference to a projection position of one color component image, and performs image processing for at least one of the plurality of color component images based on the obtained position information.
    Type: Application
    Filed: February 6, 2018
    Publication date: August 30, 2018
    Inventors: Ryosuke Mizuno, Eisaku Tatsumi
  • Patent number: 9967531
    Abstract: A plurality of anchor points at which a curve to be estimated passes sequentially through are set. Four anchor points which are successional are selected from the plurality of anchor points. First and second control points are set based on the selected anchor points. Quadratic Bezier curves connecting between the selected anchor points are calculated based on the selected anchor points and the first or second control point. Coordinate values of the curve to be estimated are estimated based on the quadratic Bezier curves.
    Type: Grant
    Filed: December 7, 2015
    Date of Patent: May 8, 2018
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Shinichi Uemura, Eisaku Tatsumi
  • Publication number: 20180108115
    Abstract: An image processing apparatus includes: an input unit adapted to input an image; a first acquisition unit adapted to acquire a low-frequency component image from the image input by the input unit; a first transformation unit adapted to transform the low-frequency component image acquired by the first acquisition unit; a second transformation unit adapted to transform the image input by the input unit; a second acquisition unit adapted to acquire a transformed high-frequency component image from the transformed image obtained by the second transformation unit; and a display control unit adapted to display, on a display unit, a combined image obtained by combining the transformed low-frequency component image obtained by the first transformation unit and the transformed high-frequency component image acquired by the second acquisition unit.
    Type: Application
    Filed: December 19, 2017
    Publication date: April 19, 2018
    Inventor: Eisaku Tatsumi
  • Patent number: 9875524
    Abstract: An image processing apparatus includes: an input unit adapted to input an image; a first acquisition unit adapted to acquire a low-frequency component image from the image input by the input unit; a first transformation unit adapted to transform the low-frequency component image acquired by the first acquisition unit; a second transformation unit adapted to transform the image input by the input unit; a second acquisition unit adapted to acquire a transformed high-frequency component image from the transformed image obtained by the second transformation unit; and a display control unit adapted to display, on a display unit, a combined image obtained by combining the transformed low-frequency component image obtained by the first transformation unit and the transformed high-frequency component image acquired by the second acquisition unit.
    Type: Grant
    Filed: January 11, 2016
    Date of Patent: January 23, 2018
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Eisaku Tatsumi
  • Publication number: 20170365039
    Abstract: An image processing apparatus comprising: an input unit configured to input image signals which include a first signal and a second signal lower in spatial resolution than the first signal; an obtaining unit configured to obtain information about a spatial high-frequency component of the first signal which is included in the image signals input by the input unit; a generation unit configured to generate an expanded second signal obtained by expanding the spatial resolution of the second signal included in the image signals by using the information about the spatial high-frequency component of the first signal obtained by the obtaining unit; and an output unit configured to output a processed image signal which includes the expanded second signal generated by the generation unit.
    Type: Application
    Filed: June 6, 2017
    Publication date: December 21, 2017
    Inventor: Eisaku TATSUMI
  • Patent number: 9799108
    Abstract: An image processing apparatus can correct the influence of contrast caused by a difference between a photopic vision and a scotopic vision to provide an image excellent in image quality. An averaged within-visual-field luminance calculation unit calculates a luminance value in the visual field based on at least one of environmental luminance in the visual field and luminance in a screen on which image data can be displayed. A reverse gamma conversion processing unit corrects the contrast of the image data based on the obtained luminance value in the visual field.
    Type: Grant
    Filed: May 7, 2014
    Date of Patent: October 24, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Eisaku Tatsumi
  • Patent number: 9786216
    Abstract: To reduce the occurrence of flicker in an image with almost no movement and reduce the occurrence motion blur in an image with movement, an image processing apparatus detects movement information from acquired image data. The image processing apparatus causes a display unit to perform first light emission to display a first frame, and also causes the display unit to perform second light emission to display a second frame, the first frame and the second frame corresponding to one frame of the acquired image data. The image processing apparatus controls at least either light emission time periods of the first light emission and the second light emission or light emission luminances of the first light emission and the second light emission based on the movement information.
    Type: Grant
    Filed: August 26, 2014
    Date of Patent: October 10, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventor: Eisaku Tatsumi
  • Publication number: 20170278227
    Abstract: An image processing apparatus for displaying an image on a display screen, inputs data, specifies at least one of a bright region and a dark region of an image corresponding to the image data, executes, for at least one of the bright region and the dark region, at least one of first chroma processing of increasing a chroma of the bright region, second chroma processing of lowering the chroma of the dark region, first hue processing of making a hue of the bright region close to red, and second hue processing of making the hue of the dark region close to blue in accordance with display dynamic range information corresponding to the display screen, and displays, on the display screen, an image based on corrected image data that has undergone correction.
    Type: Application
    Filed: September 11, 2015
    Publication date: September 28, 2017
    Inventor: Eisaku Tatsumi
  • Patent number: 9762850
    Abstract: An apparatus comprises an unit to receive an input of an input image signal including a high resolution component signal and a low resolution component signal; an unit to obtain a high frequency component signal of the high resolution component signal and obtain a low resolution signal obtained by scaling down the resolution of the high resolution component signal; an unit to change a value of at least one of the low resolution signal and the low resolution component signal based on a combination of a value of the low resolution signal and a value of the low resolution component signal; and an unit to generate an output image signal corresponding to the input image signal based on the at least one of the low resolution signal and the low resolution component signal whose value has been changed, and the high frequency component signal.
    Type: Grant
    Filed: January 25, 2017
    Date of Patent: September 12, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Eisaku Tatsumi
  • Publication number: 20170214884
    Abstract: An apparatus comprises an unit to receive an input of an input image signal including a high resolution component signal and a low resolution component signal; an unit to obtain a high frequency component signal of the high resolution component signal and obtain a low resolution signal obtained by scaling down the resolution of the high resolution component signal; an unit to change a value of at least one of the low resolution signal and the low resolution component signal based on a combination of a value of the low resolution signal and a value of the low resolution component signal; and an unit to generate an output image signal corresponding to the input image signal based on the at least one of the low resolution signal and the low resolution component signal whose value has been changed, and the high frequency component signal.
    Type: Application
    Filed: January 25, 2017
    Publication date: July 27, 2017
    Inventor: Eisaku TATSUMI
  • Publication number: 20170154412
    Abstract: Image processing apparatuses, methods and storage mediums for use therewith are provided herein. At least one image processing apparatus includes, a first acquisition unit configured to, in order to generate a converted image having a narrower dynamic range than an input image, acquire gradation values of a plurality of neighborhood pixels positioned in a predetermined range from a processing target pixel of the input image, a second acquisition unit configured to acquire conversion information from a holding unit holding the conversion information used to generate the converted image having a narrower dynamic range than the input image, and a determination unit configured to determine a gradation value of a pixel on the converted image corresponding to the processing target pixel by using the gradation values of the plurality of neighborhood pixels acquired by the first acquisition unit and the conversion information acquired by the second acquisition unit.
    Type: Application
    Filed: November 16, 2016
    Publication date: June 1, 2017
    Inventor: Eisaku Tatsumi
  • Patent number: 9653026
    Abstract: A timing controller performs control to cause a backlight to emit light at first brightness for a first time in a period that original image data is displayed on a liquid crystal panel, and cause the backlight to emit light at second brightness darker than the first brightness for a second time longer than the first time in a period that intermediate image data generated based on the original image data is displayed on the liquid crystal panel.
    Type: Grant
    Filed: March 4, 2013
    Date of Patent: May 16, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Eisaku Tatsumi
  • Patent number: 9482935
    Abstract: A projection apparatus for projecting an image of a display unit by emitting light from a light source includes a detection unit configured to detect flicker information indicating how easily flicker occurs based on input image information, and a control unit configured to control the number of light emissions of the light source in a time period during which an image in one frame is displayed by the display unit based on the flicker information detected by the detection unit.
    Type: Grant
    Filed: October 1, 2013
    Date of Patent: November 1, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventor: Eisaku Tatsumi
  • Publication number: 20160282707
    Abstract: Provided is a technology that favorably represents tones. The illumination amount of light from a light source with which a light modulator is illuminated is controlled, according to tone values of pixels to be represented with the light modulator.
    Type: Application
    Filed: March 17, 2016
    Publication date: September 29, 2016
    Inventor: Eisaku Tatsumi