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公开(公告)号：US11212421B2
公开(公告)日：2021-12-28
申请号：US16600962
申请日：2019-10-14
Applicant: Electronics for Imaging, Inc.
Inventor： Leon Williams , Thor Olson
Abstract: Techniques for interactively determining/visualizing the color content of a source image and how the corresponding image data is mapped to device colors are described herein. For example, the color content of a digital image can be converted between different color spaces to identify gamut limitations of an output device (e.g., a printing assembly), discover color(s) that cannot be accurately reproduced, etc. Color space conversions enable the transformation of the color content of the digital image from device-specific colorants to a device-independent representation (and vice versa). In some embodiments, these transformations are facilitated using lookup tables that are implemented in graphical processing unit-resident memory.
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公开(公告)号：US10958810B2
公开(公告)日：2021-03-23
申请号：US16162495
申请日：2018-10-17
Applicant: SEIKO EPSON CORPORATION
Inventor： Kenji Fukasawa , Mitsuhiro Yamashita
Abstract: A device link profile adjustment method of a computer carrying out a process of adjusting a device link table in a device link profile expressing a correspondence relationship between a first coordinate value of a first device-dependent color space and a second coordinate value of a second device-dependent color space, the method including: accepting an adjustment target at an adjustment point, using a coordinate in a profile connection space as a reference; and adjusting the device link table based on the adjustment target and a color conversion table including a device-independent coordinate value of the profile connection space of an original profile used to create the device link table.
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公开(公告)号：US10063744B2
公开(公告)日：2018-08-28
申请号：US15276892
申请日：2016-09-27
Applicant: Susumu Miyazaki , Tomoyuki Yoshida , Tetsuo Inui , Shigefumi Imoto
Inventor： Susumu Miyazaki , Tomoyuki Yoshida , Tetsuo Inui , Shigefumi Imoto
CPC classification number: H04N1/4095 , H02N1/12 , H04N1/0313 , H04N1/12 , H04N1/2034 , H04N1/407 , H04N2201/0081
Abstract: An image reading device includes a first unit to read one surface of a document in a first area facing a document path, a second unit disposed in the first area to read the other surface of the document, a first reference member facing the first unit at a first distance therefrom at a second position in a second area not facing the path, a second reference member facing the first unit at a second distance therefrom at a first position in the first area, a third reference member facing the second unit at the second distance therefrom, and a correction unit to correct, based on a difference between first data generated through reading of the first member by the first unit and second data generated through reading of the second member by the first unit, third data generated through reading of the third member by the second unit.
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4.发明授权公开(公告)号：US09924072B2
公开(公告)日：2018-03-20
申请号：US15008996
申请日：2016-01-28
Applicant: FUJI XEROX Co., Ltd.
Inventor： Kenji Mori
CPC classification number: H04N1/6008 , H04N1/00013 , H04N1/00037 , H04N1/00087 , H04N1/00477 , H04N1/6033 , H04N2201/0005 , H04N2201/0081
Abstract: An image reading apparatus includes an image reading section and a detection section. The image reading section includes at least two detection units, and performs a reading operation on an image. The at least two detection units have respective spectral characteristics which are different from each other. The detection section detects a condition of an irregularity on an image carrier by comparing a detection result of the image read by the image reading section with an output characteristic. The output characteristic is stored in advance and is a color component obtained from a value obtained by the image reading section reading a test image having a region in at least one color.
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公开(公告)号：US09785873B2
公开(公告)日：2017-10-10
申请号：US15044355
申请日：2016-02-16
Applicant: Mikel Stanich , Nikita Gurudath , Larry M. Ernst , William E. Manchester
Inventor： Mikel Stanich , Nikita Gurudath , Larry M. Ernst , William E. Manchester
CPC classification number: G06K15/1881 , H04N1/4057
Abstract: A printing system is disclosed. The printing system includes a halftone calibration module to receive one or more un-calibrated halftones, transform un-calibrated threshold values in the one or more un-calibrated halftones via an inverse transfer function to generate calibrated halftone threshold values and generate one or more calibrated halftones based on the calibrated halftone threshold values.
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Patent Agency Ranking
6.发明授权公开(公告)号：US09633285B2
公开(公告)日：2017-04-25
申请号：US14696825
申请日：2015-04-27
Applicant: CANON KABUSHIKI KAISHA
Inventor： Takashi Yano
CPC classification number: G06K15/02 , B41J29/393 , G06K15/027 , G06K15/1867
Abstract: An image forming apparatus includes: a first correction unit configured to obtain a measurement value of a correction amount based on a detection result by a detection unit, and correct an image forming condition based on the measurement value; a second correction unit configured to obtain a variation value by a prediction calculation at a predetermined timing, obtain a prediction value by accumulating the variation value since the first correction unit performed the correction, and correct the image forming condition based on the prediction value, the variation value being a estimated value of the correction amount; and a determination unit configured to obtain an evaluation value related to a prediction error based on the variation value since the first correction unit performed the correction, and determine, based on the evaluation value, the correction timing by the first correction unit.
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7.发明授权Method, apparatus and program for restoring and correcting surface reflectance with color image processing 有权用彩色图像处理恢复和校正表面反射率的方法，装置和程序公开(公告)号：US09485391B2
公开(公告)日：2016-11-01
申请号：US12867583
申请日：2009-02-23
Applicant: Masato Tsukada
Inventor： Masato Tsukada
CPC classification number: H04N1/6086 , G06T7/90 , H04N1/62
Abstract: Spectral power distribution of an illumination is restored using color information in a region of the specific object in an input image and a pre-specified representative surface reflectance of the specific object. The surface reflectance in the region of the specific object is restored from the color information and the spectral power distribution of the illumination. The surface reflectance is corrected using three or more pre-specified reference surface reflectances of the specific object. The color in the region of the specific object is calculated from the spectral power distribution of the illumination and the corrected surface reflectance.
Abstract translation: 使用输入图像中的特定对象的区域中的颜色信息和特定对象的预先指定的代表性表面反射率来恢复照明的光谱功率分布。 特定对象的区域中的表面反射率从照明的颜色信息和光谱功率分布恢复。 使用特定对象的三个或更多个预定参考表面反射来校正表面反射率。 根据照明的光谱功率分布和校正的表面反射率计算特定对象区域中的颜色。
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公开(公告)号：US09380188B1
公开(公告)日：2016-06-28
申请号：US14687673
申请日：2015-04-15
Applicant: Xerox Corporation
Inventor： Robert Eero Nuuja
CPC classification number: H04N1/603 , H04N1/04 , H04N1/6047 , H04N2201/0094
Abstract: An input imaging system and method for improving color accuracy in a scanning of a document are disclosed. For example, the apparatus includes a scanning unit for scanning a document, a user interface for receiving a color value in the document and a processor coupled to the scanning unit and the user interface to identify a portion of the document that includes the color value that is received via the user interface, generate a scanned document having a corresponding portion that is coded with an inaccurate color value and adjusting the inaccurate color value of the corresponding portion in the scanned document to match the color value that is received.
Abstract translation: 公开了一种用于提高文档扫描中的颜色精度的输入成像系统和方法。 例如，该装置包括用于扫描文档的扫描单元，用于接收文档中的颜色值的用户界面以及耦合到扫描单元和用户界面的处理器，以识别文档的包括颜色值的部分， 经由用户界面接收，生成具有用不准确的颜色值编码的对应部分的扫描文档，并且调整扫描文档中对应部分的不准确的颜色值以匹配所接收的颜色值。
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9.发明授权Image processing apparatus, image processing system, and image processing method 有权图像处理装置，图像处理系统和图像处理方法公开(公告)号：US09338328B2
公开(公告)日：2016-05-10
申请号：US14474756
申请日：2014-09-02
Applicant: Takanori Itoh
Inventor： Takanori Itoh
CPC classification number: H04N1/6077 , H04N1/54 , H04N1/6022
Abstract: The present invention includes a first generating unit that generates a recording-amount of a chromatic-color-material in each pixel of a color-image from first image data indicating the color-image; a second generating unit that generates a recording-amount of a transparent-color-material in each pixel of a transparent-image from second image data indicating the transparent-image; a storage unit that stores an upper-limit-recording-amount of the color-materials and an upper-limit-recording-amount assignable to the transparent-color-material, for color material image data indicating an image formed from the recording-amount of the chromatic-color-material and the recording-amount of the transparent-color-material; and a correcting unit that calculates a recording-amount assignable to the transparent-color-material by subtracting the recording-amount of the chromatic-color-material from the upper-limit-recording-amount of the color-materials, and corrects the recording-amount of the transparent-color-material in each pixel based on a ratio of the calculated recording-amount assignable to the transparent-color-material and the upper-limit-recording-amount assignable to the transparent-color-material.
Abstract translation: 本发明包括第一生成单元，其从表示彩色图像的第一图像数据生成彩色图像的每个像素中的彩色材料的记录量; 第二生成单元，从表示所述透明图像的第二图像数据生成透明图像的每个像素的透明色材料的记录量; 存储单元，其存储颜色材料的上限记录量和可分配给透明色材料的上限记录量，对于表示由记录量形成的图像的颜色材料图像数据 的彩色材料和透明色材料的记录量; 以及校正单元，通过从彩色材料的上限记录量减去彩色材料的记录量来计算可分配给透明色材料的记录量，并且校正记录 - 基于可计算的可分配到透明色材料的记录量的比率和可分配给透明色材料的上限记录量的每个像素中的透明颜色材料的数量。
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10.发明授权Method, apparatus, and computer program product for processing an image to reduce image deterioration 有权用于处理图像以减少图像劣化的方法，装置和计算机程序产品公开(公告)号：US09286661B2
公开(公告)日：2016-03-15
申请号：US14311919
申请日：2014-06-23
Applicant: Ayumu Hashimoto
Inventor： Ayumu Hashimoto
CPC classification number: G06T5/002 , G06K9/38 , G06K9/4652 , G06T2207/10024 , G06T2207/20012 , G06T2207/20192
Abstract: A method for processing an image includes: detecting and outputting an attributed of each pixel of input image data; performing a filtering process in which smoothing is performed on the input image data; detecting an edge amount being N value (where N>2) information from the data subjected to the smoothing; removing a chromatic color in a first removal amount according to the detected edge amount from all of the pixels; and removing a chromatic color in a second removal amount according to the detected edge amount from the pixel that has been determined to have a text attribute and an achromatic attribute at the detecting, wherein the second removal amount is determined on the basis of a discrete M value (where M>2) corresponding to the edge amount.
Abstract translation: 一种用于处理图像的方法包括：检测和输出输入图像数据的每个像素的归因; 执行对输入图像数据进行平滑化的滤波处理; 从经过平滑化的数据中检测边缘量是N值（其中N> 2）信息; 根据来自所有像素的检测到的边缘量，去除第一去除量中的彩色; 以及根据所检测到的边缘量从在所述检测处被确定为具有文本属性和非彩色属性的像素中去除第二去除量中的有色颜色，其中所述第二去除量基于离散M 值（其中M> 2）对应于边缘量。
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