公开(公告)号：US20250139524A1

公开(公告)日：2025-05-01

申请号：US18926364

申请日：2024-10-25

Applicant: SEIKO EPSON CORPORATION

Inventor： Yasuhiro TAKEUCHI ,  Takahiro KAMADA ,  Yuko YAMAMOTO ,  Mitsuhiro YAMASHITA

IPC: G06N20/00 ,  B41J2/21 ,  G06T7/90 ,  H04N1/60

Abstract: A method of creating a color prediction model includes (a) acquiring color chart data representing N color patch groups; (b) a process of executing an accuracy calculation process sequentially while increasing an integer n, the process including (i) creating n tentative training datasets corresponding to n color patch groups using a predicted spectral reflectance predicted by a simple color prediction model, (ii) creating the tentative color prediction model by training the color prediction model with n tentative training datasets, and (iii) calculating a prediction accuracy of the tentative color prediction model; (c) a process of determining a number nc of color patch groups suitable for training the color prediction model using a relationship between the integer n and the prediction accuracy; (d) executing printing and measurement of spectral reflectances for the nc color patch groups, and creating training data including measurement results of the spectral reflectances; and (e) performing training of the color prediction model.

公开(公告)号：US20240135636A1

公开(公告)日：2024-04-25

申请号：US18489050

申请日：2023-10-17

Applicant: SEIKO EPSON CORPORATION

Inventor： Takuya ONO ,  Takahiro KAMADA ,  Mitsuhiro YAMASHITA ,  Yuko YAMAMOTO

IPC: G06T15/50 ,  G06F3/12 ,  G06F3/14 ,  G06T15/80 ,  G06V10/141 ,  G06V10/56 ,  H04N1/60

CPC classification number: G06T15/506 ,  G06F3/12 ,  G06F3/14 ,  G06T15/80 ,  G06V10/141 ,  G06V10/56 ,  H04N1/6016

Abstract: Image data expressed in a first color space is converted into an expression in a second color space to be used during rendering by using a color conversion profile, and converted image data is generated. A setting related to an application to physically-based rendering is performed on a parameter to be used when performing physically-based rendering on a print medium as a 3D object and related to an appearance of the print medium, the physically-based rendering of a printed print medium on which an input image is printed is performed using the set parameter, and a rendering image corresponding to an appearance of the print medium in a virtual space is displayed in a mode in which a difference in applications of the parameter during rendering is comparable.

公开(公告)号：US20230264908A1

公开(公告)日：2023-08-24

申请号：US18165224

申请日：2023-02-06

Applicant: SEIKO EPSON CORPORATION

Inventor： Takahiro KAMADA ,  Mitsuhiro YAMASHITA ,  Takuya ONO ,  Yuko YAMAMOTO

IPC: B65H7/02

CPC classification number: B65H7/02 ,  B65H2511/413 ,  B65H2511/416

Abstract: The print medium identification method includes (a) a step of obtaining first physical property information about a print medium, (b) a step of obtaining second physical property information which is different from the first physical property information about the print medium, (c) a step of obtaining first discrimination information for discriminating a type of print medium by inputting the first physical property information to a first discriminator, (d) a step of obtaining second discrimination information for discriminating the type of print medium by inputting second physical property information to a second discriminator, and (e) a step of identifying the type of print medium by using the first discrimination information and the second discrimination information.

公开(公告)号：US20210297557A1

公开(公告)日：2021-09-23

申请号：US17202479

申请日：2021-03-16

Applicant: SEIKO EPSON CORPORATION

Inventor： Yuko YAMAMOTO

IPC: H04N1/60 ,  B41J2/21

Abstract: A color prediction model creation device configured to create a color prediction model for predicting color values of a device-independent color system from an ink amount set includes: a first color prediction model creation unit configured to acquire a first spectral reflectance of a color chart printed on a first printing medium by using a first ink amount set, and create a first color prediction model for the first printing medium by learning a correspondence relationship between the first ink amount set and the first spectral reflectance; and a second color prediction model creation unit configured to acquire a second spectral reflectance of a color chart printed on a second printing medium by using a second ink amount set having a smaller number of combinations than that of the first ink amount set, and create a second color prediction model for the second printing medium by learning using the second ink amount set, the second spectral reflectance and the first color prediction model.

公开(公告)号：US20200227002A1

公开(公告)日：2020-07-16

申请号：US16736918

申请日：2020-01-08

Applicant: SEIKO EPSON CORPORATION

Inventor： Yuko YAMAMOTO ,  Takahiro KAMADA ,  Takumi SHIMOMUKAI ,  Shotaro MATSUDA ,  Masayuki SEKO ,  Kenji MATSUZAKA

IPC: G09G5/02

Abstract: A profile information display apparatus includes a database section in which a plurality of output profiles including information concerning association of a coordinate value in a first color space and a coordinate value in a second color space are accumulated, a color-value receiving section configured to receive an input of a color value indicating the coordinate value in the first color space, a color-reproduction determining section configured to determine, concerning each of the plurality of output profiles, whether the output profile is capable of reproducing the color value, a display section configured to display information, and a display control section configured to cause, based on a result of the determination of the color-reproduction determining section, the display section to display setting information concerning one or more output profiles selected from the plurality of output profiles.

公开(公告)号：US20170129253A1

公开(公告)日：2017-05-11

申请号：US15405413

申请日：2017-01-13

Applicant: SEIKO EPSON CORPORATION

Inventor： Akito SATO ,  Yuko YAMAMOTO ,  Yuichi YONEYAMA

IPC: B41J2/21

CPC classification number: B41J2/2132 ,  B41J2/0451 ,  B41J2/04541 ,  B41J2/04551 ,  B41J2/04581 ,  B41J2/04586 ,  B41J2/04588 ,  B41J2/04595 ,  B41J2/04596 ,  B41J2/2139 ,  B41J2002/14354

Abstract: A printing apparatus including: a first nozzle group including a first and third nozzles which ejects a first liquid; and a second nozzle group including a second nozzle which ejects a second liquid, in which, when an ejection state of the liquid ejected from the one nozzle which belongs to the first nozzle group is abnormal, complementation is performed using complementation modes of a first complementation mode that increases the amount of a liquid to be ejected from the first nozzle instead of allowing the one nozzle to eject the liquid, a second complementation mode that increases the amount of the liquid to be ejected from the second nozzle instead of allowing the one nozzle to eject the liquid, and a third complementation mode that increases the amount of the liquid to be ejected from the third nozzle instead of allowing the liquid to be ejected from the one nozzle.