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：US20240340385A1

公开(公告)日：2024-10-10

申请号：US18625038

申请日：2024-04-02

Applicant: CANON KABUSHIKI KAISHA

Inventor： YUKIHIRO SHINDO ,  YUKI NAKATANI ,  HIDEKI KUBO ,  OKINORI TSUCHIYA ,  TAKASHI NAKAMURA ,  TOHRU IKEDA ,  HIROMITSU YAMAGUCHI

IPC: H04N1/60 ,  G06T7/90 ,  G06V10/56

CPC classification number: H04N1/6019 ,  G06T7/90 ,  G06V10/56 ,  H04N1/6008 ,  G06T2207/10024

Abstract: Depending on a degree of color degeneracy of colors of an input image after absolute colorimetric mapping, an information processing apparatus synthesizes an absolute colorimetric mapping table and a perceptual mapping table. The information processing system can acquire a first color profile for performing colorimetric color conversion, a second color profile for performing perceptual color conversion, and a parameter for increasing a distance between colors mapped through gamut mapping, and generate, based on the first color profile and the second color profile and the parameter, a third color profile.

公开(公告)号：US20240205353A1

公开(公告)日：2024-06-20

申请号：US18544000

申请日：2023-12-18

Applicant: CANON KABUSHIKI KAISHA

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

IPC: H04N1/60

CPC classification number: H04N1/6063 ,  H04N1/603

Abstract: An image processing apparatus includes an input unit configured to input image data; a generation unit configured to generate 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 configured to correct the conversion unit based on a result of the color gamut conversion; and a control unit configured to control execution of the correction by the correction unit for an object included in the image data input by the input unit.

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：US20240106964A1

公开(公告)日：2024-03-28

申请号：US18465126

申请日：2023-09-11

Applicant: CANON KABUSHIKI KAISHA

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

IPC: H04N1/60

CPC classification number: H04N1/6025 ,  H04N1/6027

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.