Patents by Inventor Kouta Murasawa

Kouta Murasawa 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: 20150243000
    Abstract: An image processing apparatus includes an input unit to input image data. A first correction unit performs a first type of correction for the input image data, based on a result of analysis of the image data. A storage unit stores the corrected image data. A second correction unit performs a first type of manual correction for the stored image data using a correction parameter in accordance with a user instruction. A third correction unit performs a second type of correction for the input image data, based on a result of analysis of the image data in a case when a second type of correction instruction based on an image analysis is input, after the first type of manual correction is performed by the second correction unit. The second type of correction is different from the first type of correction.
    Type: Application
    Filed: May 11, 2015
    Publication date: August 27, 2015
    Inventors: Shinjiro Hori, Kouta Murasawa
  • Patent number: 9092720
    Abstract: Provided is a dither pattern generation method so that a dot arrangement having excellent dispersibility can be obtained in low-gradation areas for single colors and for mixed colors. The dither pattern generation method generates dot patterns for low-gradation areas having threshold values 1 to S so that high dispersibility is obtained in a cyan dot pattern and a magenta dot pattern, and so that in a combined dot pattern made by combining these dot patterns there are no overlapping pixels. The dither pattern generation method then sets threshold values for a cyan dither pattern and a magenta dither pattern based on these generated dot patterns.
    Type: Grant
    Filed: September 24, 2014
    Date of Patent: July 28, 2015
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Junichi Nakagawa, Akitoshi Yamada, Nobutaka Miyake, Tomokazu Ishikawa, Shinjiro Hori, Fumitaka Goto, Ryosuke Iguchi, Hidetsugu Kagawa, Kouta Murasawa, Hiromitsu Akiba, Senichi Saito
  • Patent number: 9087291
    Abstract: An image processing apparatus includes a generation unit; wherein a first dither pattern and a second dither pattern have same threshold values that are set for same pixels in a first gradation range, and have different threshold values that are set for same pixels in a second gradation range that exceeds the first gradation range; and the generation unit sets a first threshold value for forming dots of the first dither pattern, and generates a first binary data according to whether or not a threshold value corresponding to a target pixel of the first dither pattern is included in the first threshold value, and sets a second threshold value for forming dots of the second dither pattern, and generates a second binary data according to whether or not a threshold value corresponding to a target pixel of the second dither pattern is included in the second threshold value.
    Type: Grant
    Filed: September 24, 2014
    Date of Patent: July 21, 2015
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Shinjiro Hori, Nobutaka Miyake, Akitoshi Yamada, Fumitaka Goto, Ryosuke Iguchi, Hidetsugu Kagawa, Tomokazu Ishikawa, Kouta Murasawa, Hiromitsu Akiba, Junichi Nakagawa, Senichi Saito
  • Patent number: 9052742
    Abstract: An image processing apparatus includes at least one processor. An input unit is configured to input image data. A correction unit performs a correction for the image data based on a result of analysis of the data. A storage unit stores the corrected image data. A processing unit performs a correction for the corrected image data using a correction parameter in accordance with a user instruction. The processing unit corrects the corrected image data stored by the storage unit using a changed correction parameter, when the correction parameter has been changed according to a user instruction. When a correction instruction based on an image analysis is input after correction of the image data by at least one of the correction unit and the processing unit, the correction unit makes a correction for the input image data input based on a result of analyzing the image data.
    Type: Grant
    Filed: November 20, 2013
    Date of Patent: June 9, 2015
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Shinjiro Hori, Kouta Murasawa
  • Publication number: 20150117719
    Abstract: An apparatus includes an acquisition unit configured to acquire an input image, an identifying unit configured to identify a distance from a reference point to a processing target pixel in the input image, a deformation unit configured to deform an image based on the distance, and a sharpening processing unit configured to perform sharpening processing on an image while changing a strength of the sharpening processing, the changing of the strength based on the distance.
    Type: Application
    Filed: October 27, 2014
    Publication date: April 30, 2015
    Inventors: Hiroyuki Sakai, Kouta Murasawa
  • Publication number: 20150092241
    Abstract: An image processing apparatus includes a generation unit; wherein a first dither pattern and a second dither pattern have same threshold values that are set for same pixels in a first gradation range, and have different threshold values that are set for same pixels in a second gradation range that exceeds the first gradation range; and the generation unit sets a first threshold value for forming dots of the first dither pattern, and generates a first binary data according to whether or not a threshold value corresponding to a target pixel of the first dither pattern is included in the first threshold value, and sets a second threshold value for forming dots of the second dither pattern, and generates a second binary data according to whether or not a threshold value corresponding to a target pixel of the second dither pattern is included in the second threshold value.
    Type: Application
    Filed: September 24, 2014
    Publication date: April 2, 2015
    Inventors: Shinjiro Hori, Nobutaka Miyake, Akitoshi Yamada, Fumitaka Goto, Ryosuke Iguchi, Hidetsugu Kagawa, Tomokazu Ishikawa, Kouta Murasawa, Hiromitsu Akiba, Junichi Nakagawa, Senichi Saito
  • Publication number: 20150092240
    Abstract: Provided is a quantization processing method using dither patterns that make it possible to obtain a dot array having excellent dispersibility even in the case of a single color or mixed color inks. For this purpose, first and second dither patterns are prepared in order to respectively quantize multivalued data for a first ink to different pieces of binary data, respectively. Also, third and fourth dither patterns are prepared in order to respectively quantize multivalued data for a second ink to different pieces of binary data. Further, on the basis of a combination of the multivalued data on the first ink and the multivalued data on the second ink, a quantization unit for the first ink, and a quantization unit for the second ink are determined.
    Type: Application
    Filed: September 24, 2014
    Publication date: April 2, 2015
    Inventors: Nobutaka Miyake, Junichi Nakagawa, Akitoshi Yamada, Tomokazu Ishikawa, Shinjiro Hori, Fumitaka Goto, Ryosuke Iguchi, Hidetsugu Kagawa, Kouta Murasawa, Hiromitsu Akiba, Senichi Saito
  • Publication number: 20150092242
    Abstract: Provided is a dither pattern generation method so that a dot arrangement having excellent dispersibility can be obtained in low-gradation areas for single colors and for mixed colors. The dither pattern generation method generates dot patterns for low-gradation areas having threshold values 1 to S so that high dispersibility is obtained in a cyan dot pattern and a magenta dot pattern, and so that in a combined dot pattern made by combining these dot patterns there are no overlapping pixels. The dither pattern generation method then sets threshold values for a cyan dither pattern and a magenta dither pattern based on these generated dot patterns.
    Type: Application
    Filed: September 24, 2014
    Publication date: April 2, 2015
    Inventors: Junichi Nakagawa, Akitoshi Yamada, Nobutaka Miyake, Tomokazu Ishikawa, Shinjiro Hori, Fumitaka Goto, Ryosuke Iguchi, Hidetsugu Kagawa, Kouta Murasawa, Hiromitsu Akiba, Senichi Saito
  • Publication number: 20150022580
    Abstract: Because the ejection state of a printing element in a printing apparatus may vary at all times, an inspection item for inspecting a printed image may be set in consideration of the ejection state of the printing element. An inspection item for inspecting a printed image may be set based on information including a temperature characteristic of a printing head and a state of ink such as an elapsed time from the last ejection. This allows image inspection that matches with variations in the ejection state of the printing element.
    Type: Application
    Filed: July 15, 2014
    Publication date: January 22, 2015
    Inventors: Fumitaka Goto, Hidetsugu Kagawa, Senichi Saito, Nobutaka Miyake, Shinjiro Hori, Akitoshi Yamada, Ryosuke Iguchi, Tomokazu Ishikawa, Kouta Murasawa, Hiromitsu Akiba, Junichi Nakagawa
  • Publication number: 20150002902
    Abstract: Image ink data is generated which represents the absence of ejection of ink corresponding to pixels for which text ink data represents the ejection of ink.
    Type: Application
    Filed: June 25, 2014
    Publication date: January 1, 2015
    Inventors: Hiromitsu Akiba, Nobutaka Miyake, Shinjiro Hori, Akitoshi Yamada, Fumitaka Goto, Ryosuke Iguchi, Hidetsugu Kagawa, Tomokazu Ishikawa, Kouta Murasawa, Junichi Nakagawa, Senichi Saito
  • Patent number: 8885971
    Abstract: An image processing apparatus includes an input unit configured to input image data, a detection unit configured to detect a region corresponding to local light in an image represented by the image data input by the input unit, and a processing unit configured to perform blur processing on the region corresponding to the local light and detected by the detection unit, wherein the processing unit varies, according to a position of the region corresponding to the local light and detected by the detection unit, an area on which to perform the blur processing.
    Type: Grant
    Filed: July 19, 2012
    Date of Patent: November 11, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shinjiro Hori, Kouta Murasawa, Kiyoshi Umeda
  • Patent number: 8817326
    Abstract: When a user inputs an image addition instruction from a UI input unit, a job registration unit registers a job corresponding to the instruction in a job list for each type of processing. When undo is input from the UI input unit, a current position pointer prepared for each type of processing returns to the immediately preceding job. When redo is input, the current position pointer moves to the immediately succeeding job. When a processing execution instruction is input, out of jobs registered in the job list, the job indicated by the current position pointer and preceding jobs are executed in a predetermined order.
    Type: Grant
    Filed: December 9, 2010
    Date of Patent: August 26, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Kouta Murasawa
  • Publication number: 20140218753
    Abstract: In low-resolution processing (reduction processing) in which input image data is separated into character print data and image print data to generate print data of lower resolution than that of the input image data, if a plurality of pixels is simply reduction-processed to one pixel, color of a color image surrounding a character may change. In an image processing method, calculation for performing reduction processing so that the plurality of pixels in the input image data corresponds to one pixel in the print data is performed as follows. A ratio of using a pixel value of a character attribute pixel in the calculation is set to 0, or set smaller than a ratio of using a pixel value of an image attribute pixel. As a result, a change in the color of the color image surrounding the character can be prevented.
    Type: Application
    Filed: January 29, 2014
    Publication date: August 7, 2014
    Inventors: Kouta Murasawa, Akitoshi Yamada, Nobutaka Miyake, Tomokazu Ishikawa, Shinjiro Hori, Fumitaka Goto, Ryosuke Iguchi, Hidetsugu Kagawa, Hiromitsu Akiba, Senichi Saito, Junichi Nakagawa
  • Patent number: 8705889
    Abstract: An upstream image processing apparatus determines, when geometric conversion is instructed, whether the result of downstream correction processing changes due to the geometric conversion, and if it changes, the apparatus changes the conversion to geometric conversion that does not cause a change in the correction result. Then, the geometric conversion is performed on a target image, and the resultant image is transmitted to a downstream image processing apparatus. Together therewith, instruction information indicating an instruction for correction processing and instruction information indicating geometric transformation processing for performing geometric transformation processing to the instructed degree are transmitted to the downstream image processing apparatus. The downstream image processing apparatus adds an instruction for image processing as appropriate, and thereafter transmits the resultant data to an image forming apparatus.
    Type: Grant
    Filed: September 2, 2011
    Date of Patent: April 22, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventor: Kouta Murasawa
  • Publication number: 20140078051
    Abstract: According to this invention, image processes are classified into a plurality of categories, and the result of processes belonging to each category is written in an intermediate buffer prepared for the category. The order of categories is determined in advance, and an output from a process of a preceding category serves as an input to a process of a succeeding category. The preceding category includes image processes such as automatic correction requiring no quick response. The succeeding category includes image processes such as manual correction requiring a quick response.
    Type: Application
    Filed: November 20, 2013
    Publication date: March 20, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Shinjiro Hori, Kouta Murasawa
  • Patent number: 8620105
    Abstract: According to this invention, image processes are classified into a plurality of categories, and the result of processes belonging to each category is written in an intermediate buffer prepared for the category. The order of categories is determined in advance, and an output from a process of a preceding category serves as an input to a process of a succeeding category. The preceding category includes image processes such as automatic correction requiring no quick response. The succeeding category includes image processes such as manual correction requiring a quick response.
    Type: Grant
    Filed: December 9, 2010
    Date of Patent: December 31, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shinjiro Hori, Kouta Murasawa
  • Publication number: 20130022289
    Abstract: An image processing apparatus includes an input unit configured to input image data to be processed, an determination unit configured to determine a region corresponding to local light in the image data input by the input unit, and a specification unit configured to determine a characteristic of the image data input by the input unit, wherein the determination unit changes, according to the characteristic of the image data specified by the specification unit, an determination criterion of the region corresponding to the local light.
    Type: Application
    Filed: June 26, 2012
    Publication date: January 24, 2013
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Kiyoshi Umeda, Kouta Murasawa, Shinjiro Hori
  • Publication number: 20130021498
    Abstract: A blurring process is performed on an addition area including a point light source area detected in an image to be processed so that the nearer to the circumference of the addition area, the higher the luminance value while an addition coefficient is being increased according to a distance from the center.
    Type: Application
    Filed: July 19, 2012
    Publication date: January 24, 2013
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Kouta Murasawa, Kiyoshi Umeda, Shinjiro Hori
  • Publication number: 20130022290
    Abstract: An image processing apparatus includes an input unit configured to input image data, a detection unit configured to detect a region corresponding to local light in an image represented by the image data input by the input unit, and a processing unit configured to perform blur processing on the region corresponding to the local light and detected by the detection unit, wherein the processing unit varies, according to a position of the region corresponding to the local light and detected by the detection unit, an area on which to perform the blur processing.
    Type: Application
    Filed: July 19, 2012
    Publication date: January 24, 2013
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Shinjiro Hori, Kouta Murasawa, Kiyoshi Umeda
  • Publication number: 20120063640
    Abstract: An upstream image processing apparatus determines, when geometric conversion is instructed, whether the result of downstream correction processing changes due to the geometric conversion, and if it changes, the apparatus changes the conversion to geometric conversion that does not cause a change in the correction result. Then, the geometric conversion is performed on a target image, and the resultant image is transmitted to a downstream image processing apparatus. Together therewith, instruction information indicating an instruction for correction processing and instruction information indicating geometric transformation processing for performing geometric transformation processing to the instructed degree are transmitted to the downstream image processing apparatus. The downstream image processing apparatus adds an instruction for image processing as appropriate, and thereafter transmits the resultant data to an image forming apparatus.
    Type: Application
    Filed: September 2, 2011
    Publication date: March 15, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Kouta Murasawa