Patents by Inventor Takahiro Fukase

Takahiro Fukase 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: 10440233
    Abstract: An image processing apparatus generates color conversion data in which first color component values in a first color space are associated with second color component values in a second color space. The apparatus executes determining a reference curve that takes a maximum value in the second color space among curves representing gradations of color components in the first color space; determining interpolation guide curves that represent a maximum gradation and a minimum gradation of a color component to be interpolated in the first color space; executing colorimetry on color patches corresponding to second color component values in the reference and interpolation guide curves; interpolating second color component values not included in the reference and interpolation guide curves, based on the second color component values obtained by the colorimetry; and generating the color conversion data by using the second color component values obtained by the colorimetry and the interpolation.
    Type: Grant
    Filed: January 28, 2019
    Date of Patent: October 8, 2019
    Assignee: Ricoh Company, Ltd.
    Inventor: Takahiro Fukase
  • Patent number: 10402961
    Abstract: An inspection apparatus, system, and method, each of which: acquires a master image serving as an inspection reference, the master image being generated based on image data to be printed as a printed image; acquires a read image read from the printed image; extracts a neighboring region neighboring an edge region of the master image; determines whether a change amount of density of pixels in the neighboring region falls within a predetermined range; based on a determination that the change amount of density of pixels in the neighboring region falls within the predetermined range, calculates a statistic of density of pixels in a corresponding region of the read image, which corresponds to the neighboring region of the master image; and determines existence or non-existence of a defect in the corresponding region of the read image based on the statistic of the corresponding region.
    Type: Grant
    Filed: May 4, 2017
    Date of Patent: September 3, 2019
    Assignee: Ricoh Company, Ltd.
    Inventor: Takahiro Fukase
  • Publication number: 20190238724
    Abstract: An image processing apparatus generates color conversion data in which first color component values in a first color space are associated with second color component values in a second color space. The apparatus executes determining a reference curve that takes a maximum value in the second color space among curves representing gradations of color components in the first color space; determining interpolation guide curves that represent a maximum gradation and a minimum gradation of a color component to be interpolated in the first color space; executing colorimetry on color patches corresponding to second color component values in the reference and interpolation guide curves; interpolating second color component values not included in the reference and interpolation guide curves, based on the second color component values obtained by the colorimetry; and generating the color conversion data by using the second color component values obtained by the colorimetry and the interpolation.
    Type: Application
    Filed: January 28, 2019
    Publication date: August 1, 2019
    Applicant: Ricoh Company, Ltd.
    Inventor: Takahiro FUKASE
  • Patent number: 10326916
    Abstract: An inspection apparatus includes circuitry to acquire a first scanned image by scanning each recording media printed with a target image, acquire a second scanned image by scanning one recording medium printed with a color chart including a plurality of color patches, generate index color information including information of index colors having higher frequency of occurrence on the one recording medium for each of the color patches, generate color conversion information by associating each of the color patches and each of the index colors, generate a reference image for each of the index colors by performing a color conversion of the target image by applying the color conversion information, calculate a difference of a color value of each pixel configuring the first scanned image and a color value of each pixel of each of reference images, and inspect the printed matter based on a plurality of color difference values.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: June 18, 2019
    Assignee: Ricoh Company, Ltd.
    Inventor: Takahiro Fukase
  • Publication number: 20190132454
    Abstract: An image inspection device includes a reading device and a processor. The reading device is configured to read a chart image on a recording medium to generate a first read image. The reading device is configured to read an image to be inspected on a recording medium to generate a second read image. The processor is configured to calculate a plurality of types of correction parameters on basis of the first read image and image data of the chart image, correct the image data with the plurality of types of correction parameters to generate a reference image, and compare the reference image and the second read image to inspect the second read image.
    Type: Application
    Filed: October 30, 2018
    Publication date: May 2, 2019
    Inventor: Takahiro Fukase
  • Publication number: 20180227463
    Abstract: An inspection apparatus includes circuitry to acquire a first scanned image by scanning each recording media printed with a target image, acquire a second scanned image by scanning one recording medium printed with a color chart including a plurality of color patches, generate index color information including information of index colors having higher frequency of occurrence on the one recording medium for each of the color patches, generate color conversion information by associating each of the color patches and each of the index colors, generate a reference image for each of the index colors by performing a color conversion of the target image by applying the color conversion information, calculate a difference of a color value of each pixel configuring the first scanned image and a color value of each pixel of each of reference images, and inspect the printed matter based on a plurality of color difference values.
    Type: Application
    Filed: February 6, 2018
    Publication date: August 9, 2018
    Inventor: Takahiro FUKASE
  • Publication number: 20180108122
    Abstract: An inspection apparatus, system, and method, each of which: acquires a master image serving as an inspection reference, the master image being generated based on image data to be printed as a printed image; acquires a read image read from the printed image; extracts a neighboring region neighboring an edge region of the master image; determines whether a change amount of density of pixels in the neighboring region falls within a predetermined range; based on a determination that the change amount of density of pixels in the neighboring region falls within the predetermined range, calculates a statistic of density of pixels in a corresponding region of the read image, which corresponds to the neighboring region of the master image; and determines existence or non-existence of a defect in the corresponding region of the read image based on the statistic of the corresponding region.
    Type: Application
    Filed: May 4, 2017
    Publication date: April 19, 2018
    Inventor: Takahiro FUKASE
  • Patent number: 9900474
    Abstract: A color processing apparatus includes circuitry that obtains a color patch scanned image acquired by scanning a color patch, acquires a pixel value of the color patch scanned image, calculates pixel value variance information indicating a variance of the pixel values based on the acquired pixel values, and determines whether or not the color patch scanned image is defective based on the pixel value variance information.
    Type: Grant
    Filed: March 17, 2016
    Date of Patent: February 20, 2018
    Assignee: Ricoh Company, Ltd.
    Inventor: Takahiro Fukase
  • Patent number: 9524545
    Abstract: An apparatus for verifying an inspection result includes an inspection result obtaining unit to obtain inspection result indicating defect amount and defect position in a scanned image, from an inspection result of defect judgment of the scanned image with respect to an inspection reference image, the defect judgment being performed through dividing at least one of the scanned image and the inspection reference image and conducting position matching of the scanned image and inspection reference image; and a verification unit to count defect amount occurring to the scanned image, to determine whether a defect pattern occurring to the scanned image matches a pre-set condition corresponding to a false detection condition causable by failure of the position matching, and to determine that defect occurring to the scanned image is a false detection when the counted defect amount is a threshold or more, and the defect pattern matches the false detection condition.
    Type: Grant
    Filed: September 15, 2014
    Date of Patent: December 20, 2016
    Assignee: Ricoh Company, Ltd.
    Inventor: Takahiro Fukase
  • Publication number: 20160277644
    Abstract: A color processing apparatus includes circuitry that obtains a color patch scanned image acquired by scanning a color patch, acquires a pixel value of the color patch scanned image, calculates pixel value variance information indicating a variance of the pixel values based on the acquired pixel values, and determines whether or not the color patch scanned image is defective based on the pixel value variance information.
    Type: Application
    Filed: March 17, 2016
    Publication date: September 22, 2016
    Applicant: Ricoh Company, Ltd.
    Inventor: Takahiro Fukase
  • Patent number: 9313341
    Abstract: An image test apparatus acquires a result of determination on a defect in a read image obtained by reading an image formed and output on a recording medium, based on a difference between the read image and a test image, acquires a sheet type of a sheet from which the read image is read, calculates a stacked position of a sheet of a defective read image in which the defect is detected among sheets stacked on a discharge tray serving as a discharge destination of the sheet of the read image, on the discharge tray based on the result of the determination on the defect in the read image and based on the acquired sheet type, and controls an indicating unit, which indicates a height at predetermined intervals in a direction in which the sheets are stacked on the discharge tray, based on the calculated stacked position.
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: April 12, 2016
    Assignee: RICOH COMPANY, LIMITED
    Inventors: Hiromitsu Miyagawa, Takahiro Fukase
  • Patent number: 9019526
    Abstract: An image examination apparatus includes a generation unit configured to generate an examination image for examining a read image; an extraction unit configured to extract, from the examination image, multiple reference points used for alignment between the examination and read images; a calculation unit configured to calculate information on misalignment between positions of the reference points and positions corresponding respectively to the reference points in the read image; an excluding unit configured to exclude a reference point from the multiple reference points, based on the information on misalignment; an alignment unit configured to perform alignment between the examination and read images based on the reference points other than the excluded reference point; and an examination unit configured to perform examination for determining whether there is a defect in the read image on the basis of a difference between the read and examination images.
    Type: Grant
    Filed: February 27, 2014
    Date of Patent: April 28, 2015
    Assignee: Ricoh Company, Limited
    Inventors: Takahiro Fukase, Tadashi Kitai
  • Patent number: 9013772
    Abstract: An information processing apparatus including a read image obtainer and a setting value calculator implemented by circuitry. The read image obtainer obtains a scanned determination image, including a plurality of different dot patterns output by an image forming apparatus on a recording medium. The setting value calculator, for each of the different dot patterns of the obtained scanned determination image, determines densities of different colors of the respective dot pattern and a total number of pixels influencing the density of each coefficient of a dot gain correction filter, with respect to each target pixel. The setting value calculator further configured calculates the coefficients of the dot gain correction filter based on the determined densities of the different colors of the different dot patterns and the total number of pixels, determined for each coefficient of the dot gain correction filter and for each of the different dot patterns.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: April 21, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Tadashi Kitai, Takahiro Fukase
  • Publication number: 20150078627
    Abstract: An apparatus for verifying an inspection result includes an inspection result obtaining unit to obtain inspection result indicating defect amount and defect position in a scanned image, from an inspection result of defect judgment of the scanned image with respect to an inspection reference image, the defect judgment being performed through dividing at least one of the scanned image and the inspection reference image and conducting position matching of the scanned image and inspection reference image; and a verification unit to count defect amount occurring to the scanned image, to determine whether a defect pattern occurring to the scanned image matches a pre-set condition corresponding to a false detection condition causable by failure of the position matching, and to determine that defect occurring to the scanned image is a false detection when the counted defect amount is a threshold or more, and the defect pattern matches the false detection condition.
    Type: Application
    Filed: September 15, 2014
    Publication date: March 19, 2015
    Applicant: Ricoh Company, Ltd.
    Inventor: Takahiro Fukase
  • Publication number: 20140268207
    Abstract: An image examination apparatus includes a generation unit configured to generate an examination image for examining a read image; an extraction unit configured to extract, from the examination image, multiple reference points used for alignment between the examination and read images; a calculation unit configured to calculate information on misalignment between positions of the reference points and positions corresponding respectively to the reference points in the read image; an excluding unit configured to exclude a reference point from the multiple reference points, based on the information on misalignment; an alignment unit configured to perform alignment between the examination and read images based on the reference points other than the excluded reference point; and an examination unit configured to perform examination for determining whether there is a defect in the read image on the basis of a difference between the read and examination images.
    Type: Application
    Filed: February 27, 2014
    Publication date: September 18, 2014
    Inventors: Takahiro Fukase, Tadashi Kitai
  • Publication number: 20140270396
    Abstract: An image test apparatus acquires a result of determination on a defect in a read image obtained by reading an image formed and output on a recording medium, based on a difference between the read image and a test image, acquires a sheet type of a sheet from which the read image is read, calculates a stacked position of a sheet of a defective read image in which the defect is detected among sheets stacked on a discharge tray serving as a discharge destination of the sheet of the read image, on the discharge tray based on the result of the determination on the defect in the read image and based on the acquired sheet type, and controls an indicating unit, which indicates a height at predetermined intervals in a direction in which the sheets are stacked on the discharge tray, based on the calculated stacked position.
    Type: Application
    Filed: March 12, 2014
    Publication date: September 18, 2014
    Inventors: Hiromitsu MIYAGAWA, Takahiro FUKASE
  • Publication number: 20140268260
    Abstract: An information processing apparatus including a read image obtainer and a setting value calculator implemented by circuitry. The read image obtainer obtains a scanned determination image, including a plurality of different dot patterns output by an image forming apparatus on a recording medium. The setting value calculator, for each of the different dot patterns of the obtained scanned determination image, determines densities of different colors of the respective dot pattern and a total number of pixels influencing the density of each coefficient of a dot gain correction filter, with respect to each target pixel. The setting value calculator further configured calculates the coefficients of the dot gain correction filter based on the determined densities of the different colors of the different dot patterns and the total number of pixels, determined for each coefficient of the dot gain correction filter and for each of the different dot patterns.
    Type: Application
    Filed: March 14, 2014
    Publication date: September 18, 2014
    Inventors: Tadashi KITAI, Takahiro FUKASE