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1. 发明授权

US10771657B2 Image processing apparatus and image processing method quantizing first and second gradation data to generate first and second quantization data 有权
公开(公告)号：US10771657B2
公开(公告)日：2020-09-08
申请号：US16519680
申请日：2019-07-23
申请人： CANON KABUSHIKI KAISHA
发明人： Tsukasa Doi , Hirokazu Tanaka , Hisashi Ishikawa , Shoei Moribe , Yusuke Yamamoto , Shigeo Kodama , Yuta Ikeshima
IPC分类号： G06K15/00 , H04N1/60 , G06K15/02
摘要： An image processing apparatus performs image processing to print a color materials of a first color and a second color. When a sum of a first gradation data for the first color and a second gradation data for the second color is equal to or smaller than the maximum value of thresholds of a first threshold matrix, a generation unit generates a second quantization data for the second color based on a result of comparing the second gradation data with a second threshold. When the sum is greater than the maximum value, the generation unit generates third gradation data by subtracting the maximum value from the sum and generates the second quantization data based on a result of comparing the third gradation data with the first threshold or a result of comparing a difference between the second gradation data and the third gradation data with the second threshold.

2. 发明申请

US20190007580A1 IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD 审中-公开
公开(公告)号：US20190007580A1
公开(公告)日：2019-01-03
申请号：US16019879
申请日：2018-06-27
申请人： CANON KABUSHIKI KAISHA
发明人： Shoei Moribe , Yusuke Yamamoto
IPC分类号： H04N1/405 , B41J2/21 , H04N1/60
CPC分类号： H04N1/405 , B41J2/2146 , H04N1/4092 , H04N1/605
摘要： To implement sharpness recovery processing suitable for an image, an image processing apparatus for generating, based on an input image, a halftone image to be provided to an image forming unit which forms an image on a printing medium, comprises: a recovery processing unit configured to perform, on the input image, recovery processing for compensating for sharpness degradation in an image formed by the image forming unit; a generating unit configured to generate a recovery amount of each pixel by using the input image having undergone the recovery processing; and a halftone processing unit configured to generate, based on the recovery amount, the halftone image by performing halftone processing on the input image having undergone the recovery processing.

3. 发明申请

US20180324327A1 COLOR CONVERSION LOOK-UP TABLE GENERATING DEVICE, COLOR CONVERSION LOOK-UP TABLE CORRECTION METHOD, AND STORAGE MEDIUM 审中-公开
公开(公告)号：US20180324327A1
公开(公告)日：2018-11-08
申请号：US15968183
申请日：2018-05-01
申请人： CANON KABUSHIKI KAISHA
发明人： Shoei Moribe , Takashi Ochiai
IPC分类号： H04N1/60
CPC分类号： H04N1/6019 , G09G5/06 , H04N1/407 , H04N1/58 , H04N1/60 , H04N1/6013 , H04N1/6027 , H04N1/6033
摘要： A color conversion look-up table generating device of the present invention includes a converting unit configured to convert an actual color material value of a target grid point in the color conversion look-up table and an actual color material value of a neighbor grid point of the target grid point into virtual color material values, and a correcting unit that corrects the actual color material value of the target grid point on the basis of a virtual color material amount of the target grid point and a virtual color material amount of the neighbor grid point, wherein the virtual color material value is an output value of a virtual color material that absorbs only light of spectral reflectance in each of divided blocks in a case in which spectral reflectance of the actual color material is divided into n (n is an integer of 3 or more) blocks.

4. 发明授权

US09894250B2 Image processing apparatus, image forming apparatus, image processing method, and non-transitory computer readable storage medium configured to generate, based on correction data, data indicating on dot positions during printing and scanning 有权
公开(公告)号：US09894250B2
公开(公告)日：2018-02-13
申请号：US15239252
申请日：2016-08-17
申请人： CANON KABUSHIKI KAISHA
发明人： Shoei Moribe
IPC分类号： H04N1/60 , H04N1/50 , H04N1/52
CPC分类号： H04N1/6066 , H04N1/502 , H04N1/52 , H04N1/6019 , H04N2201/0082
摘要： A unit acquires first image data expressing a color of an image and second image data expressing a feature of the image. A unit color-separates the first image data into first and second color material amount data. A unit generates inverted data by inverting the second image data. A unit generates first corrected data from the first color material amount data and the inverted data and generates second corrected data from the second color material amount data and the second image data. A unit generates, based on the first corrected data, first data indicating on dot printing positions during a printing and scanning operation, generates, based on the second corrected data, second data indicating on dot printing positions in the operation, and generates, based on the first and second data, image forming data.

5. 发明申请

US20210103784A1 IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND STORAGE MEDIUM 有权
公开(公告)号：US20210103784A1
公开(公告)日：2021-04-08
申请号：US17031150
申请日：2020-09-24
申请人： CANON KABUSHIKI KAISHA
发明人： Shoei Moribe
IPC分类号： G06K15/02 , G06K15/10
摘要： An image processing apparatus corrects a measured value obtained by measuring a measurement image formed using a printing element configured to discharge ink, the measured value being used to identify a density characteristic of the printing element. The image processing apparatus obtains a measured value; and corrects the measured value based on a density of the measurement image.

6. 发明申请

US20200324557A1 IMAGE PROCESSING METHOD 审中-公开
公开(公告)号：US20200324557A1
公开(公告)日：2020-10-15
申请号：US16843412
申请日：2020-04-08
申请人： CANON KABUSHIKI KAISHA
发明人： Shoei Moribe , Yumi Yanai
IPC分类号： B41J2/21 , H04N1/52
摘要： First to third inks have a relationship where dot power of an overlapping dot formed by overlapping dots of first and third inks is higher than dot power of an overlapping dot formed by overlapping dots of second and third inks. A first gradation value for the first ink is quantized to generate a first quantized value, a second gradation value for the second ink is quantized to generate a second quantized value, and a third gradation value for the third ink is quantized to generate a third quantized value. In this case, the quantization processing is performed such that, among pixels for which the third quantized values indicate printing in a predetermined pixel region, the number of pixels for which the second quantized values indicate printing is greater than the number of pixels for which the first quantized values indicate printing.

7. 发明申请

US20200042840A1 IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD 审中-公开
公开(公告)号：US20200042840A1
公开(公告)日：2020-02-06
申请号：US16519731
申请日：2019-07-23
申请人： CANON KABUSHIKI KAISHA
发明人： Tsukasa Doi , Hirokazu Tanaka , Hisashi Ishikawa , Shoei Moribe , Yusuke Yamamoto , Shigeo Kodama , Yuta Ikeshima
IPC分类号： G06K15/02 , G06K15/10
摘要： When a sum of a first gradation data for a first color and a second gradation data for a second color is greater than the maximum value of thresholds of a first threshold matrix, a generation unit generates a first overlapping gradation data and second overlapping gradation data by dividing a value obtained by subtracting the maximum value from the sum. Further, the generation unit generates a first quantization data based on a result of comparing the first overlapping gradation data with the second threshold or a result of comparing a difference between the first gradation data and the first overlapping gradation data with the first threshold, and generates a second quantization data based on a result of comparing the second overlapping gradation data with the first threshold or a result of comparing a difference between the second gradation data and the second overlapping gradation data with the second threshold.

8. 发明授权

US10326913B2 Image processing apparatus that generates halftone image data and image processing method 有权
公开(公告)号：US10326913B2
公开(公告)日：2019-06-18
申请号：US15630162
申请日：2017-06-22
申请人： CANON KABUSHIKI KAISHA
发明人： Toshiyuki Dobashi , Shoei Moribe , Hisashi Ishikawa
IPC分类号： H04N1/58 , H04N1/405 , H04N1/60 , H04N1/407 , H04N1/409
摘要： In order to implement preferred sharpness recovery processing for an image, an image processing apparatus which generates, based on input image data, halftone image data used for an image forming process of forming an image on a print medium. The apparatus converts the input image data into color material amount data used for the image forming process; performs, on the color material amount data, gamma correction to compensate for non-linearity of an input/output density in the image forming process; performs, on the color material amount data after the gamma correction, recovery processing to compensate for sharpness degradation of an image formed by the image forming process; and performs halftone processing on the color material amount data after the recovery processing to generate halftone image data.

9. 发明申请

US20170310851A1 IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND STORAGE MEDIUM 审中-公开
公开(公告)号：US20170310851A1
公开(公告)日：2017-10-26
申请号：US15490617
申请日：2017-04-18
申请人： CANON KABUSHIKI KAISHA
发明人： Toshiyuki Dobashi , Shoei Moribe , Hisashi Ishikawa
IPC分类号： H04N1/405 , H04N1/60 , H04N1/52
CPC分类号： H04N1/4051 , H04N1/405 , H04N1/4092 , H04N1/52 , H04N1/6008
摘要： Sharpness of image data in a low-frequency component, which is deceased by an image forming apparatus, is recovered and the recovered image data is converted into halftone image data. Halftone processing includes calculating edge intensity in a local region, dividing the local region into a first pixel group and a second pixel group based on a pixel value of each pixel, determining a distribution order of dots based on a pixel value of each pixel, a threshold value, and the edge intensity such that dots are likely to be distributed to the first pixel group and dots are unlikely to be distributed to the second pixel group, and determining an output value for each pixel in the local region by distributing dots to some pixels included in the local region as much as a number of dots to be output to the local region while referring to the distribution order.

10. 发明申请

US20170064150A1 IMAGE PROCESSING APPARATUS, IMAGE FORMING APPARATUS, IMAGE PROCESSING METHOD, AND NON-TRANSITORY COMPUTER READABLE STORAGE MEDIUM 有权
标题翻译：图像处理设备，图像形成设备，图像处理方法和非可移动计算机可读存储介质
公开(公告)号：US20170064150A1
公开(公告)日：2017-03-02
申请号：US15239252
申请日：2016-08-17
申请人： CANON KABUSHIKI KAISHA
发明人： Shoei Moribe
IPC分类号： H04N1/60 , H04N1/50
CPC分类号： H04N1/6066 , H04N1/502 , H04N1/52 , H04N1/6019 , H04N2201/0082
摘要： A unit acquires first image data expressing a color of an image and second image data expressing a feature of the image. A unit color-separates the first image data into first and second color material amount data. A unit generates inverted data by inverting the second image data. A unit generates first corrected data from the first color material amount data and the inverted data and generates second corrected data from the second color material amount data and the second image data. A unit generates, based on the first corrected data, first data indicating on dot printing positions during a printing and scanning operation, generates, based on the second corrected data, second data indicating on dot printing positions in the operation, and generates, based on the first and second data, image forming data.
摘要翻译：单元获取表示图像的颜色的第一图像数据和表示图像的特征的第二图像数据。单元颜色将第一图像数据分离成第一和第二颜色材料量数据。单元通过反转第二图像数据来产生反相数据。单元从第一颜色材料量数据和反转数据生成第一校正数据，并从第二颜色材料量数据和第二图像数据生成第二校正数据。单元基于第一校正数据生成在打印和扫描操作期间指示点打印位置的第一数据，基于第二校正数据生成指示操作中的点打印位置的第二数据，并且基于第一和第二数据，图像形成数据。

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