公开(公告)号：US10284749B2

公开(公告)日：2019-05-07

申请号：US15271830

申请日：2016-09-21

申请人： KONICA MINOLTA, INC.

发明人： Takeshi Yamaguchi

IPC分类号： G06F15/00 ,  H04N1/60

摘要： Provided are a printer, a non-transitory computer-readable storage medium and a scanner-profile creation method. In a printer including a print engine, a scanner and a color measurement device, or a printing system including a printer, a scanner and a color measurement device, a controller creates a scanner profile by using RGB values and color measurement values obtained by measuring a first color chart with the scanner and color measurement device, and determines a first color gamut and a second color gamut of the printer by using one or both of RGB values and color measurement values obtained by measuring the first color chart and a second color chart, respectively, where the second color chart includes at least color patches in specific colors representing a color gamut of the printer. The controller further corrects the scanner profile by comparing the first color gamut and the second color gamut.

公开(公告)号：US10097732B2

公开(公告)日：2018-10-09

申请号：US15015555

申请日：2016-02-04

申请人： KONICA MINOLTA, INC.

发明人： Takeshi Yamaguchi

IPC分类号： H04N1/00 ,  H04N1/60 ,  H04N1/54

摘要： A color conversion method includes: a first acquisition step of acquiring a first color conversion table which defines mapping from a first color space to a second color space, and a second color conversion table which defines mapping from the second color space to a third color space; a second acquisition step of acquiring a color in the second color space to be subjected to color conversion; a computation step of computing an element group and a weight of each element included in the element group; a determination step of determining whether or not the element group in the second color conversion table; and a processing step of performing either first processing of performing inverse conversion and computing the color in the third color space, or second processing of performing an interpolation computation and computing the color in the third color space.

公开(公告)号：US20180013926A1

公开(公告)日：2018-01-11

申请号：US15642562

申请日：2017-07-06

申请人： Konica Minolta, Inc.

发明人： Takeshi Yamaguchi

IPC分类号： H04N1/60 ,  H04N1/047 ,  H04N1/00

CPC分类号： H04N1/6008 ,  G06T7/90 ,  G06T2207/20224 ,  H04N1/00045 ,  H04N1/047 ,  H04N1/6033 ,  H04N1/6055 ,  H04N2201/0094

摘要： A color conversion apparatus includes a hardware processor that obtains a scanner profile created on the basis of measured RGB values and corresponding measured colorimetric values of patches in a first color chart, and creates a table including correction amounts of RGB values, each according to the level of flare estimated for a patch and each associated with an RGB-value difference and a patch-size difference, on the basis of RGB values of patches in the first color chart and RGB values of patches in a specific chart. The specific chart is created by using a part of the patches in the first color chart with the RGB value or patch size being changed. The hardware processor further corrects measured RGB values of patches in a second color chart with the table, and convers the corrected RGB values into colorimetric values with the scanner profile.

公开(公告)号：US09363420B2

公开(公告)日：2016-06-07

申请号：US14814729

申请日：2015-07-31

申请人： KONICA MINOLTA, INC.

发明人： Takeshi Yamaguchi

IPC分类号： G06K15/00 ,  H04N1/40 ,  H04N1/60 ,  H04N1/00

CPC分类号： H04N1/6072 ,  H04N1/00724 ,  H04N1/00726 ,  H04N1/00769 ,  H04N1/00774 ,  H04N1/603 ,  H04N1/6033

摘要： A color conversion method includes: a step (a) of obtaining paper white information including a spectral reflectance and a scanner response value of a paper white portion of a document, a step (b) of searching for a registered scanner profile corresponding to paper white information the same as or similar to the paper white information, from a plurality of registered scanner profiles for paper types, and a step (c) of determining whether a new scanner profile needs to be created corresponding to the paper white information obtained in the step (a), according to a result of searching in the step (b).

摘要翻译： 一种颜色转换方法包括：获得包括文档的纸白色部分的光谱反射率和扫描器响应值的纸白信息的步骤（a）;搜索对应于纸白色的注册扫描器轮廓的步骤（b） 信息与纸张白色信息相同或类似的信息，从纸张类型的多个注册的扫描仪配置文件中，以及步骤（c），确定是否需要创建对应于在步骤中获得的纸张白色信息的新的扫描仪配置文件 （a），根据步骤（b）中的搜索结果。

公开(公告)号：US09979860B2

公开(公告)日：2018-05-22

申请号：US15482324

申请日：2017-04-07

申请人： KONICA MINOLTA, INC.

发明人： Takeshi Yamaguchi

IPC分类号： H04N1/40 ,  H04N1/60 ,  H04N1/00

CPC分类号： H04N1/6019 ,  H04N1/00323 ,  H04N1/6008 ,  H04N1/6044 ,  H04N2201/0094

摘要： An image forming apparatus includes a printing unit, an in-line colorimeter and an in-line scanner. A hardware processor is configured to control the printing unit, the in-line colorimeter and the in-line scanner, to perform the following operations. The hardware processor uses the printing unit to print a first color chart to be measured with the in-line scanner and an external colorimeter, and a second color chart to be measured with the in-line scanner and the in-line colorimeter. A hardware processor creates a scanner profile based on RGB values and colorimetric values of patches of the second size in the second area in the first color chart, and uses RGB values and colorimetric values of patches of the first size in the first area in each of the first and second color charts, to calculates correction amounts for use in estimation of colorimetric values by using the scanner profile.

公开(公告)号：US09563828B2

公开(公告)日：2017-02-07

申请号：US14738260

申请日：2015-06-12

申请人： KONICA MINOLTA, INC.

发明人： Rumi Imaseki ,  Takeshi Yamaguchi

IPC分类号： G06K15/02 ,  H04N1/60 ,  H04N1/00 ,  B41J29/393

CPC分类号： G06K15/1878 ,  B41J29/393 ,  G06K15/027 ,  H04N1/00023 ,  H04N1/00034 ,  H04N1/00082 ,  H04N1/6019 ,  H04N1/6025 ,  H04N1/6038

摘要： A color conversion method according to the present invention, in which a scanner that outputs a first color value of a device-dependent color space is used, includes the steps of: acquiring the first color value by reading, by the scanner, a printed material which is based on image data composed of C, M, Y, K values; converting the acquired first color value to a second color value using a scanner profile of the scanner; mapping the first color value acquired from the printed material to the K value of the image data of the printed material; determining a correction quantity of the second color value from the mapped first color value and the K value using a scanner profile correcting LUT; and correcting the converted second color value using the determined correction quantity of the second color value, and outputting the second color value after being corrected.

摘要翻译： 根据本发明的颜色转换方法，其中使用输出与设备有关的色彩空间的第一颜色值的​​扫描器，包括以下步骤：通过扫描器读取打印材料来获取第一颜色值 其基于由C，M，Y，K值组成的图像数据; 使用扫描器的扫描器轮廓将获取的第一颜色值转换为第二颜色值; 将从印刷材料获取的第一颜色值映射到印刷材料的图像数据的K值; 使用扫描器轮廓校正LUT从映射的第一颜色值和K值确定第二颜色值的校正量; 以及使用所确定的所述第二颜色值的校正量来校正所转换的第二颜色值，并且在校正之后输出所述第二颜色值。

公开(公告)号：US09117160B2

公开(公告)日：2015-08-25

申请号：US14542762

申请日：2014-11-17

申请人： KONICA MINOLTA, INC.

发明人： Takeshi Yamaguchi

IPC分类号： H04N1/60 ,  G06K15/02 ,  G06K15/00

CPC分类号： H04N1/605 ,  H04N1/6019 ,  H04N1/6022

摘要： Provided is a color conversion table creation method for creating a color conversion table for an image forming apparatus which forms an image by performing, on an input color value with total use amount of color material exceeding set amount, a process for reducing the total use amount of color material, the table presenting correspondence between the input color value input to the image forming apparatus and an output color value in a device-independent color space. The method includes: acquiring an input color value of a patch image for creating the table; when the total use amount of color material defined by the acquired input color value is around the set amount, adjusting the input color value to have a smaller difference between the total use amount and the set amount; and creating the color conversion table using the patch image with the adjusted input color value.

摘要翻译： 提供了一种颜色转换表创建方法，用于创建用于通过对颜色材料的总使用量超过设定量的输入颜色值执行形成图像的图像形成装置的颜色转换表，用于减少总使用量的处理 表示输入到图像形成装置的输入颜色值与设备无关色彩空间中的输出颜色值之间的对应关系。 该方法包括：获取用于创建表的补丁图像的输入颜色值; 当由所获取的输入颜色值定义的颜色材料的总使用量在设定量附近时，调整输入颜色值以使总使用量与设定量之间具有较小的差异; 并使用具有调整的输入颜色值的补丁图像来创建颜色转换表。

公开(公告)号：US11451685B2

公开(公告)日：2022-09-20

申请号：US17008717

申请日：2020-09-01

申请人： Konica Minolta, Inc.

发明人： Takeshi Yamaguchi

IPC分类号： H04N1/60 ,  H04N1/00

摘要： A color conversion table corrector corrects a color conversion table used in an image data generation device, and the color conversion table corrector includes a hardware processor that: obtains data related to a print image; obtains first target data based on a first captured image obtained by capturing an image of a first color matching target corresponding to the print image; decides a specific area, in the first captured image, which is not used to correct the color conversion table; and corrects the color conversion table according to the data related to the print image and the first target data based on the first captured image excluding the specific area.

公开(公告)号：US10984297B2

公开(公告)日：2021-04-20

申请号：US16055550

申请日：2018-08-06

申请人： Konica Minolta, Inc.

发明人： Takeshi Yamaguchi

IPC分类号： G06K15/02 ,  G01J3/46 ,  H04N1/60

摘要： An image processing apparatus includes: a reader that reads a paper sheet with a background plate serving as a background; and a hardware processor, wherein the hardware processor: obtains, from the reader, a first color value in which an image on one side of the paper sheet is read, a second color value in which a ground color of the other side of the paper sheet is read, and a third color value in which a portion corresponding to the image on the other side of the paper sheet is read; and estimates a thickness of the paper sheet on the basis of the first to third color values while referring to a predetermined table.

公开(公告)号：US10129438B2

公开(公告)日：2018-11-13

申请号：US15642562

申请日：2017-07-06

申请人： Konica Minolta, Inc.

发明人： Takeshi Yamaguchi

IPC分类号： H04N1/60 ,  G06T7/90 ,  H04N1/00 ,  H04N1/047

摘要： A color conversion apparatus includes a hardware processor that obtains a scanner profile created on the basis of measured RGB values and corresponding measured colorimetric values of patches in a first color chart, and creates a table including correction amounts of RGB values, each according to the level of flare estimated for a patch and each associated with an RGB-value difference and a patch-size difference, on the basis of RGB values of patches in the first color chart and RGB values of patches in a specific chart. The specific chart is created by using a part of the patches in the first color chart with the RGB value or patch size being changed. The hardware processor further corrects measured RGB values of patches in a second color chart with the table, and convers the corrected RGB values into colorimetric values with the scanner profile.