Method for a corresponding color display on the basis of spectral color impressions for different output applications

    公开(公告)号:US11997245B2

    公开(公告)日:2024-05-28

    申请号:US17258611

    申请日:2019-07-08

    申请人: Colordigital GmbH

    发明人: Olaf Kolling

    IPC分类号: H04N1/60

    CPC分类号: H04N1/6052

    摘要: A method for identical color display based on spectral data impressions for different output applications related to the digital data processing of color information values for different output applications and different color values according to usual standard regarding a controlled, loss-less and color-correct display of specific pre-defined color impressions with location-independent matching and adjusting of the color data. The method contains instructions for identifying and providing in an IT infrastructure specific color data as spectral data records that are converted and transmitted for an output application in real time into a device-specific color profile for a specific output device, taking into account query-dependent values. In a preferred application, material- and substance-specific data is taken into account during conversion. In another preferred application the spectral data records are provided for subsequent queries.

    PROFILE ADJUSTMENT METHOD, STORAGE MEDIUM STORING PROFILE ADJUSTMENT PROGRAM, AND PROFILE ADJUSTMENT APPARATUS

    公开(公告)号:US20190132488A1

    公开(公告)日:2019-05-02

    申请号:US16174363

    申请日:2018-10-30

    IPC分类号: H04N1/60

    摘要: In an output profile representing a correspondence relationship between device independent coordinate values and second coordinate values in a second device dependent color space, a color conversion table used to convert the device independent coordinate values into the second coordinate values is defined as a first conversion table, and the device independent coordinate values at the adjustment point are defined as to-be-adjusted PCS values. In optimization, an optimization process including an element making provisional color values closer to an adjustment target is executed, the provisional color value being acquired by a conversion, in accordance with the first conversion table, of provisional PCS values resulting from a change in the to-be-adjusted PCS values, thus acquiring an optimal solution for the device independent coordinate values corresponding to the adjustment target.

    PROFILE ADJUSTMENT METHOD, PROFILE ADJUSTMENT PROGRAM OF NON-TRANSITORY COMPUTER READABLE MEDIUM FOR STORING, AND PROFILE ADJUSTMENT SYSTEM

    公开(公告)号:US20180352116A1

    公开(公告)日:2018-12-06

    申请号:US15996592

    申请日:2018-06-04

    发明人: Kenji FUKASAWA

    IPC分类号: H04N1/64 H04N1/60

    摘要: A profile adjustment method is a method of adjusting a profile defining a correspondent relation between input coordinate values of an input color space and output coordinate values of an output color space. The profile adjustment method includes: accepting setting of a first adjustment point of first coordinates and a second adjustment point of second coordinates; setting a third adjustment point of third coordinates based on the first and second coordinates; generating third adjustment data indicating degree of adjustment at the third adjustment point based on first adjustment data indicating degree of adjustment at the first adjustment point and second adjustment data indicating degree of adjustment at the second adjustment point; and adjusting the profile based on the first adjustment data, the second adjustment data, and the third adjustment data.

    Image process apparatus for correcting a document based on correction parameter of another document and computer program therefor

    公开(公告)号:US10038825B2

    公开(公告)日:2018-07-31

    申请号:US15062389

    申请日:2016-03-07

    发明人: Kazuhide Sawada

    IPC分类号: H04N1/60 H04N1/00

    摘要: An image processing apparatus includes: a controller performs: acquiring first original image data generated by optically reading a first document; acquiring first corrected image data generated by executing first correction processing; calculating a feature amount indicative of a difference between the first original image data and the first corrected image data; determining a correction parameter indicative of the specific color by using the calculated feature amount; acquiring second original image data generated by optically reading a second document different from the first document, and generating second corrected image data by executing second correction processing for the second original image data, wherein the second correction processing is processing of changing the pixel value indicative of the specific color specified by using the determined correction parameter into the pixel value indicative of the color different from the specific color.

    COLOR CONVERSION APPARATUS, LOOK-UP TABLE GENERATING METHOD, AND LOOK-UP TABLE GENERATING APPARATUS

    公开(公告)号:US20170337453A1

    公开(公告)日:2017-11-23

    申请号:US15614978

    申请日:2017-06-06

    发明人: Yoshio OKUMURA

    IPC分类号: G06K15/02 H04N1/60

    摘要: A look-up table generating method generates a look-up table by synthesizing at least first and second look-up tables to indicate first and second output characteristics for first and second region. The first output characteristic includes an output characteristic in which a first color difference between color values of the first and second color materials under a first observation light source is within a first range for all of the first region, and a second color difference between color values of the first and second color materials under a second observation light source is outside a second range for at least part of the first region. The second output characteristic includes an output characteristic in which the first color difference is outside the first range for at least part of the second region, and the second color difference is within the second range for all of the second region.