公开(公告)号：US20240013507A1

公开(公告)日：2024-01-11

申请号：US18340724

申请日：2023-06-23

Applicant: CANON KABUSHIKI KAISHA

Inventor： KOUTA MURASAWA ,  TAKASHI NAKAMURA ,  HIDETSUGU KAGAWA ,  AKIHIKO NAKATANI ,  AKITOSHI YAMADA ,  KENTARO YANO

IPC: G06V10/56 ,  G06T7/90 ,  G06V10/60 ,  G06V10/74

CPC classification number: G06V10/56 ,  G06T7/90 ,  G06V10/60 ,  G06V10/761 ,  G06T2207/10024

Abstract: If a correction unit corrects a conversion unit configured to convert a color gamut of input image data into a color gamut of a device configured to output the image data, a generation unit generates image data having undergone color gamut conversion from the input image data using the corrected conversion unit. In the image data having undergone the color gamut conversion by the corrected conversion unit, a color difference in the image data having undergone the color gamut conversion by the conversion unit is expanded.

公开(公告)号：US20230291858A1

公开(公告)日：2023-09-14

申请号：US18174718

申请日：2023-02-27

Applicant: Canon Kabushiki Kaisha

Inventor： HIROYASU KUNIEDA ,  AKITOSHI YAMADA ,  YOICHI KASHIBUCHI ,  JUN NAGAI

IPC: H04N1/32

CPC classification number: H04N1/32299 ,  H04N1/32267 ,  H04N1/32352 ,  H04N1/32309 ,  H04N1/3232 ,  H04N2201/0094

Abstract: An image processing apparatus includes: a first obtaining unit configured to obtain an original image; a second obtaining unit configured to obtain region information indicating first and second regions, the first region read in reading of a print original to have a higher density than the second region, the second region read in the reading to have a lower density than the first region; an embedding unit configured to embed information in the original image by embedding a pattern with a directivity in the first region and embed, in the second region, a pattern in which the number of pixels printed adjacent to printed pixels is smaller than that in the first region; and a control unit configured to perform control of outputting the print original by using a print image in which the patterns of the first and second regions are embedded by the embedding unit.

公开(公告)号：US20230241902A1

公开(公告)日：2023-08-03

申请号：US18161642

申请日：2023-01-30

Applicant: CANON KABUSHIKI KAISHA

Inventor： FUMITAKA GOTO ,  TOMOKAZU ISHIKAWA ,  AKITOSHI YAMADA

IPC: B41J2/355

CPC classification number: B41J2/355

Abstract: A recording apparatus includes a recording head including a plurality of heating elements, a sheet-like recording medium formed of a plurality of laminated color-developing layers for developing a plurality of colors. A first condition is satisfied when a subsequent pixel, located at the same position as a target pixel to be recorded following the target pixel, is a pixel for developing a color of a bottom color-developing layer of the recording medium. In a case where a value of the target pixel in the image data is a predetermined value and does not satisfy the first condition, the pulse control unit controls the pulse so that a thermal energy to be applied to the recording medium by the recording head in forming the target pixel is lower than if the first condition is satisfied.

公开(公告)号：US20230196519A1

公开(公告)日：2023-06-22

申请号：US18077088

申请日：2022-12-07

Applicant: CANON KABUSHIKI KAISHA

Inventor： NAOKI SHIMADA ,  YUKI OMAGARI ,  KAZUYA OGASAWARA ,  AKITOSHI YAMADA ,  SHINICHI MIYAZAKI

IPC: G06T5/00 ,  G06V30/12 ,  G06V30/14

CPC classification number: G06T5/002 ,  G06V30/14 ,  G06V30/133

Abstract: An image processing apparatus comprises: an acquiring unit configured to acquire image data generated by reading an original; a specifying unit configured to specify an object region including a predetermined object in the image data; a removing unit configured to remove, from the object region, noise with a size smaller than a size specified by a first threshold; and a setting unit configured to set the first threshold, for each object region specified by the specifying unit, in accordance with the size of the object region.

公开(公告)号：US20250071229A1

公开(公告)日：2025-02-27

申请号：US18941899

申请日：2024-11-08

Applicant: CANON KABUSHIKI KAISHA

Inventor： TAKASHI NAKAMURA ,  KOUTA MURASAWA ,  AKITOSHI YAMADA ,  AKIHIKO NAKATANI ,  HIDETSUGU KAGAWA

IPC: H04N1/60

Abstract: An image processing apparatus obtains image data that is defined as a first color gamut, transforms the image data into image data that is defined as a second color gamut, using color transformation information, and when, as a result of transformation, a first pair of color values included in the image data is transformed into a second pair of color values that have a color difference that is not perceived as different colors, generates second color transformation information such that the first pair of color values is transformed into a third pair of color values that have a color difference that is perceived as different colors as a result of transformation using the second color transformation information. A saturation difference of the third pair of color values is larger than a saturation difference of the second pair of color values.

公开(公告)号：US20240314259A1

公开(公告)日：2024-09-19

申请号：US18602872

申请日：2024-03-12

Applicant: CANON KABUSHIKI KAISHA

Inventor： YOSHINORI MIZOGUCHI ,  AKITOSHI YAMADA ,  KOUTA MURASAWA ,  FUMINO MATSUI

IPC: H04N1/60 ,  G06K15/10

CPC classification number: H04N1/6075 ,  G06K15/102

Abstract: An image processing apparatus obtains image data; obtains first color conversion information applicable to the image data; divides the image data into a plurality of region data; corrects the first color conversion information to generate second color conversion information; and applies, to each of the plurality of region data, color conversion processing based on one of the first color conversion information and the second color conversion information. If a color difference between a third color and a fourth color obtained by converting a first color and a second color based on the first color conversion information is smaller than a predetermined color difference, a color difference between a fifth color and a sixth color obtained by converting the first color and the second color based on the second color conversion information is larger than the predetermined color difference.

公开(公告)号：US20240202977A1

公开(公告)日：2024-06-20

申请号：US18544008

申请日：2023-12-18

Applicant: CANON KABUSHIKI KAISHA

Inventor： YOSHINORI MIZOGUCHI ,  AKITOSHI YAMADA ,  KOUTA MURASAWA ,  FUMINO MATSUI

IPC: G06T7/90 ,  G06T5/20 ,  H04N1/60 ,  H04N9/64

CPC classification number: G06T7/90 ,  G06T5/20 ,  H04N1/603 ,  H04N9/64 ,  G06T2207/10024 ,  G06V10/764

Abstract: An image processing apparatus includes: an input unit which inputs image data; a generation unit which generates image data having undergone color gamut conversion from the image data input by the input unit using a conversion unit configured to convert a color gamut of the image data input by the input unit into a color gamut of a device configured to output the image data; a correction unit which corrects the conversion unit based on a result of the color gamut conversion; and a control unit which controls execution of the correction by the correction unit for a content included in the image data input by the input unit.

公开(公告)号：US20240037895A1

公开(公告)日：2024-02-01

申请号：US18350931

申请日：2023-07-12

Applicant: CANON KABUSHIKI KAISHA

Inventor： AKITOSHI YAMADA ,  SHINICHI MIYAZAKI

IPC: G06V10/28 ,  H04N1/405 ,  G06V10/54 ,  G06V10/60

CPC classification number: G06V10/28 ,  H04N1/405 ,  G06V10/54 ,  G06V10/60

Abstract: An object of the present disclosure is to maintain density as an area as compared to a conventional technology even in a case where the quantization target is an image of a high-frequency pattern, such as a hatching pattern, with a halftone value to be subjected to an error diffusion process. An embodiment of the present invention is a program for causing a computer to function as an image processing apparatus for quantizing a pixel value of each pixel in an input image, the computer being caused to function as: an adding unit configured to add at least part of a difference between an accumulated pixel value and an applied error value for a pixel of interest to a quantization error value obtained by the quantization; and an error distributing unit configured to diffuse an added error obtained by the adding unit to peripheral pixels around the pixel of interest.

公开(公告)号：US20230419575A1

公开(公告)日：2023-12-28

申请号：US18342466

申请日：2023-06-27

Applicant: CANON KABUSHIKI KAISHA

Inventor： TAKAYUKI YAMADA ,  KOUTA MURASAWA ,  KAZUYA OGASAWARA ,  SHINJIRO HORI ,  AKITOSHI YAMADA

IPC: G06T11/60 ,  G06T11/00 ,  G06F3/04847 ,  G06F3/14 ,  G06F40/109

CPC classification number: G06T11/60 ,  G06T11/001 ,  G06F3/04847 ,  G06F3/14 ,  G06F40/109

Abstract: An information processing apparatus includes at least one processor, and a memory that stores a program which, when executed by the at least one processor, causes the at least one processor to function as an acceptance unit configured to accept from a user a target impression of a poster image to be created, and a creation unit configured to create the poster image based on the target impression.

公开(公告)号：US20140055518A1

公开(公告)日：2014-02-27

申请号：US14070366

申请日：2013-11-01

Applicant: CANON KABUSHIKI KAISHA

Inventor： SENICHI SAITO ,  RYOSUKE IGUCHI ,  NOBUTAKA MIYAKE ,  TOHRU IKEDA ,  AKITOSHI YAMADA ,  MITSUHIRO ONO ,  FUMITAKA GOTO ,  HIDETSUGU KAGAWA ,  TOMOKAZU ISHIKAWA ,  JUNICHI NAKAGAWA

IPC: B41J2/205

CPC classification number: B41J2/2052 ,  B41J2/2146 ,  H04N1/6038

Abstract: Provided are an image processing apparatus and an image processing method capable of reducing color unevenness due to variations in ejection characteristics among a plurality of nozzles when printing an image using a plurality of inks. To that end, a first image which is made up a color with noticeable color unevenness and similar colors is printed onto a print medium. The user then specifies a color and a nozzle position where color unevenness has occurred. On the basis of these results, parameters are set for a correction table referenced by an MCS processor. In so doing, it becomes possible to address the factor causing the color unevenness, and mitigate the effects of color unevenness in a focused way without incurring increases in processor load, memory requirements, or processing time as compared to the case of calibrating all lattice points.

Abstract translation: 提供了一种图像处理装置和图像处理方法，当使用多种油墨打印图像时，能够减少由于多个喷嘴之间的喷射特性的变化引起的颜色不均匀。 为此，在打印介质上打印出由具有明显的颜色不均匀性和相似颜色的颜色构成的第一图像。 然后，用户指定出现颜色不均匀的颜色和喷嘴位置。 基于这些结果，为由MCS处理器引用的校正表设置参数。 在这样做时，与校准所有格子点的情况相比，可以解决导致颜色不均匀的因素，并且以聚焦方式减轻颜色不均匀的影响，而不会导致处理器负载，存储器要求或处理时间的增加 。