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).

  • 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
  • Publication number: 20160212348
    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: January 11, 2016
    Publication date: July 21, 2016
    Inventor: Eisaku Tatsumi
  • Publication number: 20160163068
    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: Application
    Filed: December 7, 2015
    Publication date: June 9, 2016
    Inventors: Shinichi Uemura, Eisaku Tatsumi
  • Patent number: 9357139
    Abstract: An image processing apparatus for generating a high dynamic range image using a plurality of images obtained by capturing images of a same object with different exposure values, has: an input unit for inputting a correctly exposed image generated with correct exposure and an incorrectly exposed image generated with exposure other than the correct exposure; a filter unit for performing low pass filter processing on the incorrectly exposed image; and a composition unit for generating a high dynamic range image by composing an output image of the filter unit with the correctly exposed image.
    Type: Grant
    Filed: March 2, 2015
    Date of Patent: May 31, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventor: Eisaku Tatsumi
  • Patent number: 9100530
    Abstract: An image processing apparatus includes an identifier identifying, for each pixel in the frame image, minimum pixel values for each color component from pixel values of surrounding pixels for each color component. The surrounding pixels are positioned around the pixel. The identifier also identifies, as a common pixel value, a minimum value in the minimum pixel values identified for each color component. The apparatus further includes a generator generating a preprocessed image which can be obtained by replacing a pixel value of each pixel in the frame image with the common pixel value identified for the pixel by the identifier, a low pass filter generating a first subframe image by applying a low-pass filter to the preprocessed image, and a subtractor generating, as a second subframe image, a difference image between the frame image and the first subframe image.
    Type: Grant
    Filed: October 14, 2010
    Date of Patent: August 4, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Kazuya Kitada, Eisaku Tatsumi, Makiko Mori
  • Publication number: 20150181104
    Abstract: An image processing apparatus for generating a high dynamic range image using a plurality of images obtained by capturing images of a same object with different exposure values, has: an input unit for inputting a correctly exposed image generated with correct exposure and an incorrectly exposed image generated with exposure other than the correct exposure; a filter unit for performing low pass filter processing on the incorrectly exposed image; and a composition unit for generating a high dynamic range image by composing an output image of the filter unit with the correctly exposed image.
    Type: Application
    Filed: March 2, 2015
    Publication date: June 25, 2015
    Inventor: Eisaku Tatsumi
  • Publication number: 20150138222
    Abstract: An image processing device, for making a plurality of projectors project an image based on an input image signal such that a part of a projection region overlaps, includes an acquiring unit and a generating unit. The acquiring unit acquires distribution information on distribution of a luminance of a displayed image when the projector projects the image based on an image signal in which a pixel value is constant. The generating unit generates an image signal for each projection of the plurality of projectors, by correcting the input image signal by using each distribution information of the plurality of projectors.
    Type: Application
    Filed: November 11, 2014
    Publication date: May 21, 2015
    Inventors: Kazuhiro Imaizumi, Naoki Kojima, Toshiyuki Ishii, Wataru Suzuki, Futoshi Hachimura, Akihiro Takamura, Eisaku Tatsumi
  • Patent number: 9001232
    Abstract: An image processing apparatus for generating a high dynamic range image using a plurality of images obtained by capturing images of a same object with different exposure values, has: an input unit for inputting a correctly exposed image generated with correct exposure and an incorrectly exposed image generated with exposure other than the correct exposure; a filter unit for performing low pass filter processing on the incorrectly exposed image; and a composition unit for generating a high dynamic range image by composing an output image of the filter unit with the correctly exposed image.
    Type: Grant
    Filed: June 12, 2013
    Date of Patent: April 7, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventor: Eisaku Tatsumi
  • Publication number: 20150062103
    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: Application
    Filed: August 26, 2014
    Publication date: March 5, 2015
    Inventor: Eisaku Tatsumi
  • Patent number: 8958657
    Abstract: An image processing apparatus that converts a frame rate by creating a sub-frame from an input frame and outputting the sub-frame, the image processing apparatus includes a generation unit configured to generate the sub-frame from the input frame, a calculation unit configured to calculate a feature amount of brightness of the input frame, and a control unit configured to perform control so as to reduce luminance of the sub-frames generated by the generation unit based on the feature amount calculated by the calculation unit.
    Type: Grant
    Filed: October 27, 2010
    Date of Patent: February 17, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yukio Hiraki, Eisaku Tatsumi
  • Patent number: 8896766
    Abstract: A display apparatus that displays an image by causing a light emitting device to emit light includes a detection unit configured to detect flicker information that indicates a likelihood of occurrence of a flicker based on input image information, and a control unit configured to control both a light emission luminance and a duty ratio of a light emission time of the light emitting device according to the flicker information detected by the detection unit.
    Type: Grant
    Filed: October 7, 2013
    Date of Patent: November 25, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Eisaku Tatsumi
  • Publication number: 20140333649
    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: Application
    Filed: May 7, 2014
    Publication date: November 13, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Eisaku Tatsumi
  • Patent number: 8787655
    Abstract: An image processing apparatus according to the present invention, comprises a calculation unit that calculates a sharpness of a 2D image for each region thereof; an image processing unit that performs image processing, in a region with a sharpness calculated by the calculation unit being higher than a first predetermined value, to increase that sharpness, and performing image processing, in a region with a sharpness calculated by the calculation unit being lower than a second predetermined value which is equal to or lower than the first predetermined value, to reduce that sharpness; and a generation unit that generates, from the 2D image processed by the image processing unit, an image for a left eye and an image for a right eye by shifting the 2D image in a horizontal direction.
    Type: Grant
    Filed: October 21, 2011
    Date of Patent: July 22, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Eisaku Tatsumi
  • Patent number: 8718396
    Abstract: An image processing apparatus comprises an input unit configured to input image data including m frame images per unit time; a filtering unit configured to generate a high-frequency component emphasized frame image and a low-frequency component frame image from each frame image; a correction unit configured to correct a luminance of the low-frequency component frame image corresponding to each frame image at a predetermined ratio so as to make the image data perceptible in the same brightness as that of each of the frame images output as the m frames per unit time; and an output unit configured to alternately output the high-frequency component emphasized frame image generated by the filtering unit and the low-frequency component frame image whose luminance has been corrected by the correction unit as image data including 2 m frame images per unit time.
    Type: Grant
    Filed: September 27, 2010
    Date of Patent: May 6, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Eisaku Tatsumi
  • Patent number: 8705882
    Abstract: To reduce flickering in driving distributed processing, an image processing apparatus which generates and outputs a plurality of sub frame images having different luminance patterns for each of a plurality of frame images included in input moving image data, includes a filtering unit configured to perform filter processing for the frame image, a setting unit configured to set a first coefficient A and a second coefficient B, a first generation unit configured to generate a first sub frame image, a second generation unit configured to generate a second sub frame image, and an output control unit configured to selectively output the first sub frame image and the second sub frame image at a predetermined timing.
    Type: Grant
    Filed: September 27, 2010
    Date of Patent: April 22, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Eisaku Tatsumi
  • Publication number: 20140104330
    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: Application
    Filed: October 1, 2013
    Publication date: April 17, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Eisaku Tatsumi
  • Publication number: 20140104439
    Abstract: A display apparatus that displays an image by causing a light emitting device to emit light includes a detection unit configured to detect flicker information that indicates a likelihood of occurrence of a flicker based on input image information, and a control unit configured to control both a light emission luminance and a duty ratio of a light emission time of the light emitting device according to the flicker information detected by the detection unit.
    Type: Application
    Filed: October 7, 2013
    Publication date: April 17, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Eisaku Tatsumi