Patents by Inventor Katsuyuki Hagiwara
Katsuyuki Hagiwara 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).
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Patent number: 9614996Abstract: Based on attachment position information of each of a plurality of sensor units, which reads an image in each area obtained by dividing the area of an original in a sub-scanning direction, image data output from the sensor unit undergoes attachment error correction of correcting the attachment error of the sensor unit. Image data output from the plurality of sensor units then undergo joint processing. Based on the placement information of the original, tilt correction of correcting the tilt of the original is performed for the image data having undergone the joint processing.Type: GrantFiled: August 15, 2016Date of Patent: April 4, 2017Assignee: Canon Kabushiki KaishaInventors: Katsuyuki Hagiwara, Takayuki Tsutsumi
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Publication number: 20160352965Abstract: Based on attachment position information of each of a plurality of sensor units, which reads an image in each area obtained by dividing the area of an original in a sub-scanning direction, image data output from the sensor unit undergoes attachment error correction of correcting the attachment error of the sensor unit. Image data output from the plurality of sensor units then undergo joint processing. Based on the placement information of the original, tilt correction of correcting the tilt of the original is performed for the image data having undergone the joint processing.Type: ApplicationFiled: August 15, 2016Publication date: December 1, 2016Inventors: Katsuyuki Hagiwara, Takayuki Tsutsumi
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Patent number: 9451125Abstract: Based on attachment position information of each of a plurality of sensor units, which reads an image in each area obtained by dividing the area of an original in a sub-scanning direction, image data output from the sensor unit undergoes attachment error correction of correcting the attachment error of the sensor unit. Image data output from the plurality of sensor units then undergo joint processing. Based on the placement information of the original, tilt correction of correcting the tilt of the original is performed for the image data having undergone the joint processing.Type: GrantFiled: August 27, 2014Date of Patent: September 20, 2016Assignee: Canon Kabushiki KaishaInventors: Katsuyuki Hagiwara, Takayuki Tsutsumi
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Publication number: 20150070734Abstract: Based on attachment position information of each of a plurality of sensor units, which reads an image in each area obtained by dividing the area of an original in a sub-scanning direction, image data output from the sensor unit undergoes attachment error correction of correcting the attachment error of the sensor unit. Image data output from the plurality of sensor units then undergo joint processing. Based on the placement information of the original, tilt correction of correcting the tilt of the original is performed for the image data having undergone the joint processing.Type: ApplicationFiled: August 27, 2014Publication date: March 12, 2015Inventors: Katsuyuki Hagiwara, Takayuki Tsutsumi
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Patent number: 8675947Abstract: The present invention is an image processing apparatus that reconstructs one frame of image data using block-level image data, including a unit that receives the block-level image data to which position information has been added, a unit that determines whether or not there was an error in the transmission of the received position information, a first storage area used for storing the block-level image data corresponding to the position information for which a transmission error did not occur, a second storage area used for storing the block-level image data corresponding to the position information for which a transmission error occurred, a unit that infers correct position information for the block-level image data stored in the second storage area based on the first storage area and the second storage area, and a unit that reconstructs the one frame of image data using the inferred position information.Type: GrantFiled: April 23, 2013Date of Patent: March 18, 2014Assignee: Canon Kabushiki KaishaInventors: Katsuyuki Hagiwara, Takashi Yoshida
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Patent number: 8649065Abstract: An image processing apparatus includes a first halftone processor, a first filtering processor, a second filtering processor, and an evaluator. The first halftone processor generates first halftone image data from input image data using thresholds. The first filtering processor smoothes the first halftone image data using a first filter having a size corresponding to a cycle of the thresholds. The second filtering processor smoothes the input image data using a second filter having a characteristic corresponding to the first filter. The evaluator evaluates a moiré caused in the first halftone image data based on a difference between the first halftone image data smoothed by the first filtering processor and the image data smoothed by the second filtering processor.Type: GrantFiled: December 21, 2010Date of Patent: February 11, 2014Assignee: Canon Kabushiki KaishaInventors: Katsuyuki Hagiwara, Hisashi Ishikawa
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Publication number: 20130236077Abstract: The present invention is an image processing apparatus that reconstructs one frame of image data using block-level image data, including a unit that receives the block-level image data to which position information has been added, a unit that determines whether or not there was an error in the transmission of the received position information, a first storage area used for storing the block-level image data corresponding to the position information for which a transmission error did not occur, a second storage area used for storing the block-level image data corresponding to the position information for which a transmission error occurred, a unit that infers correct position information for the block-level image data stored in the second storage area based on the first storage area and the second storage area, and a unit that reconstructs the one frame of image data using the inferred position information.Type: ApplicationFiled: April 23, 2013Publication date: September 12, 2013Applicant: CANON KABUSHIKI KAISHAInventors: Katsuyuki Hagiwara, Takashi Yoshida
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Patent number: 8452070Abstract: The present invention is an image processing apparatus that reconstructs one frame of image data using block-level image data, including a unit that receives the block-level image data to which position information has been added, a unit that determines whether or not there was an error in the transmission of the received position information, a first storage area used for storing the block-level image data corresponding to the position information for which a transmission error did not occur, a second storage area used for storing the block-level image data corresponding to the position information for which a transmission error occurred, a unit that infers correct position information for the block-level image data stored in the second storage area based on the first storage area and the second storage area, and a unit that reconstructs the one frame of image data using the inferred position information.Type: GrantFiled: November 14, 2011Date of Patent: May 28, 2013Assignee: Canon Kabushiki KaishaInventors: Katsuyuki Hagiwara, Takashi Yoshida
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Patent number: 8320018Abstract: An output device which outputs pixel data corresponding to a color material used by a printing unit to the printing unit includes an image buffer which stores image data, a generation unit which generates density data corresponding to the color material based on image data read out from the image buffer, a print buffer which stores density data generated by the generation unit, and a conversion unit which converts density data read out from the print buffer into pixel data corresponding to the resolution of the printing unit synchronously with the printing unit.Type: GrantFiled: January 17, 2012Date of Patent: November 27, 2012Assignee: Canon Kabushiki KaishaInventor: Katsuyuki Hagiwara
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Publication number: 20120113447Abstract: An output device which outputs pixel data corresponding to a color material used by a printing unit to the printing unit includes an image buffer which stores image data, a generation unit which generates density data corresponding to the color material based on image data read out from the image buffer, a print buffer which stores density data generated by the generation unit, and a conversion unit which converts density data read out from the print buffer into pixel data corresponding to the resolution of the printing unit synchronously with the printing unit.Type: ApplicationFiled: January 17, 2012Publication date: May 10, 2012Applicant: Canon Kabushiki KaishaInventor: Katsuyuki HAGIWARA
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Patent number: 8134742Abstract: An output device which outputs pixel data corresponding to a color material used by a printing unit to the printing unit includes an image buffer which stores image data, a generation unit which generates density data corresponding to the color material based on image data read out from the image buffer, a print buffer which stores density data generated by the generation unit, and a conversion unit which converts density data read out from the print buffer into pixel data corresponding to the resolution of the printing unit synchronously with the printing unit.Type: GrantFiled: July 3, 2007Date of Patent: March 13, 2012Assignee: Canon Kabushiki KaishaInventor: Katsuyuki Hagiwara
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Publication number: 20120057771Abstract: The present invention is an image processing apparatus that reconstructs one frame of image data using block-level image data, including a unit that receives the block-level image data to which position information has been added, a unit that determines whether or not there was an error in the transmission of the received position information, a first storage area used for storing the block-level image data corresponding to the position information for which a transmission error did not occur, a second storage area used for storing the block-level image data corresponding to the position information for which a transmission error occurred, a unit that infers correct position information for the block-level image data stored in the second storage area based on the first storage area and the second storage area, and a unit that reconstructs the one frame of image data using the inferred position information.Type: ApplicationFiled: November 14, 2011Publication date: March 8, 2012Applicant: CANON KABUSHIKI KAISHAInventors: Katsuyuki Hagiwara, Takashi Yoshida
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Patent number: 8077957Abstract: The present invention is an image processing apparatus that reconstructs one frame of image data using block-level image data, including a unit that receives the block-level image data to which position information has been added, a unit that determines whether or not there was an error in the transmission of the received position information, a first storage area used for storing the block-level image data corresponding to the position information for which a transmission error did not occur, a second storage area used for storing the block-level image data corresponding to the position information for which a transmission error occurred, a unit that infers correct position information for the block-level image data stored in the second storage area based on the first storage area and the second storage area, and a unit that reconstructs the one frame of image data using the inferred position information.Type: GrantFiled: May 28, 2009Date of Patent: December 13, 2011Assignee: Canon Kabushiki KaishaInventors: Katsuyuki Hagiwara, Takashi Yoshida
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Publication number: 20110157655Abstract: An image processing apparatus includes a first halftone processor, a first filtering processor, a second filtering processor, and an evaluator. The first halftone processor generates first halftone image data from input image data using thresholds. The first filtering processor smoothes the first halftone image data using a first filter having a size corresponding to a cycle of the thresholds. The second filtering processor smoothes the input image data using a second filter having a characteristic corresponding to the first filter. The evaluator evaluates a moiré caused in the first halftone image data based on a difference between the first halftone image data smoothed by the first filtering processor and the image data smoothed by the second filtering processor.Type: ApplicationFiled: December 21, 2010Publication date: June 30, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Katsuyuki Hagiwara, Hisashi Ishikawa
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Publication number: 20090304255Abstract: The present invention is an image processing apparatus that reconstructs one frame of image data using block-level image data, including a unit that receives the block-level image data to which position information has been added, a unit that determines whether or not there was an error in the transmission of the received position information, a first storage area used for storing the block-level image data corresponding to the position information for which a transmission error did not occur, a second storage area used for storing the block-level image data corresponding to the position information for which a transmission error occurred, a unit that infers correct position information for the block-level image data stored in the second storage area based on the first storage area and the second storage area, and a unit that reconstructs the one frame of image data using the inferred position information.Type: ApplicationFiled: May 28, 2009Publication date: December 10, 2009Applicant: CANON KABUSHIKI KAISHAInventors: Katsuyuki Hagiwara, Takashi Yoshida
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Patent number: 7561744Abstract: This invention can generate encoded data of a high compression ratio of not only a halftone image but also a vertical stripe portion or text portion, which is weak in the conventional method, by a simple process or circuit scale, and can decode the encoded data on the decoding side by a simple process or circuit scale. To this end, image data is input from an input terminal (109). A reference pixel value storage unit (101) stores image data for one period of a dither matrix. A first prediction unit (102) calculates a predicted value of a pixel of interest with reference to threshold values less than one period of pixel values, which are stored in the reference pixel value storage unit (101). A second prediction unit (104) determines a pixel value one period before the pixel of interest as a predicted value.Type: GrantFiled: November 22, 2004Date of Patent: July 14, 2009Assignee: Canon Kabushiki KaishaInventors: Katsuyuki Hagiwara, Kaname Tomiyasu
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Publication number: 20080123119Abstract: An output device which outputs pixel data corresponding to a color material used by a printing unit to the printing unit includes an image buffer which stores image data, a generation unit which generates density data corresponding to the color material based on image data read out from the image buffer, a print buffer which stores density data generated by the generation unit, and a conversion unit which converts density data read out from the print buffer into pixel data corresponding to the resolution of the printing unit synchronously with the printing unit.Type: ApplicationFiled: July 3, 2007Publication date: May 29, 2008Applicant: Canon Kabushiki KaishaInventor: Katsuyuki HAGIWARA
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Publication number: 20050152610Abstract: This invention can generate encoded data of a high compression ratio of not only a halftone image but also a vertical stripe portion or text portion, which is weak in the conventional method, by a simple process or circuit scale, and can decode the encoded data on the decoding side by a simple-process or circuit scale. To this end, image data is input from an input terminal (109). A reference pixel value storage unit (101) stores image data for one period of a dither matrix. A first prediction unit (102) calculates a predicted value of a pixel of interest with reference to threshold values less than one period of pixel values, which are stored in the reference pixel value storage unit (101). A second prediction unit (104) determines a pixel value one period before the pixel of interest as a predicted value.Type: ApplicationFiled: November 22, 2004Publication date: July 14, 2005Applicant: CANON KABUSHIKI KAISHAInventors: Katsuyuki Hagiwara, Kaname Tomiyasu