Computation of gamut boundary by sampling device-independent color space
    1.
    发明授权
    Computation of gamut boundary by sampling device-independent color space 有权
    通过采样设备无关色彩空间来计算色域边界

    公开(公告)号:US08477395B2

    公开(公告)日:2013-07-02

    申请号:US11245655

    申请日:2005-10-07

    CPC classification number: H04N1/603 H04N1/6016

    Abstract: The present invention provides for determining a gamut boundary description for a color device, the color device being characterized at least by a destination transform which converts colors from a device-independent color space to a device-dependent color space and which reports out-of-gamut colors. A set of sample values is determined in the device-independent color space. For each of the sample values within the set of sample values, the destination transform is applied to the sample value, and in a case where the sample value is in gamut, the sample value is included within a set of gamut boundary values. The gamut boundary description is determined by forming a set of polygonal surfaces based on the set of gamut boundary values. Accordingly, a gamut boundary description is determined without necessarily having to sample additional color values as the number of colorant channels for the color device increases.

    Abstract translation: 本发明提供用于确定彩色设备的色域边界描述,该彩色设备至少由目的地变换来表征,该目的变换将颜色从与设备无关的色彩空间转换为依赖设备的色彩空间, 色域色彩 在设备无关的颜色空间中确定一组样本值。 对于采样值集合中的每个采样值,将目标变换应用于采样值,并且在采样值处于色域的情况下,采样值包含在一组色域边界值内。 通过基于色域边界值的集合形成一组多边形表面来确定色域边界描述。 因此,随着颜色装置的着色剂通道的数量的增加,确定色域边界描述而不一定必须对附加的颜色值进行采样。

    Incremental color transform creation
    2.
    发明授权
    Incremental color transform creation 有权
    增量色彩转换创作

    公开(公告)号:US07342682B2

    公开(公告)日:2008-03-11

    申请号:US10309880

    申请日:2002-12-05

    CPC classification number: H04N1/6086 G06T11/001 H04N1/6058

    Abstract: An overall color transformation is constructed from multiple ones of individual color transformation steps, the overall color transformation used by a color management system to transform colors from one color space to another. A sequence of sequential add operations is executed, each add operation adding a single one of the individual transformation steps to an intermediate transformation constructed from preceding add operations, and for each add operation returning at least one value which characterizes the add operation. The sequence of subsequent add operations is altered based on preceding ones the returned values.

    Abstract translation: 从色彩管理系统中使用的颜色变换步骤的整体颜色变换,将颜色从一个颜色空间转换为另一个颜色空间,从而构成整体颜色转换。 执行顺序添加操作的顺序,每个添加操作将单个变换步骤中的单个变换步骤添加到由先前的添加操作构建的中间变换,并且对于每个添加操作返回表征添加操作的至少一个值。 后续添加操作的顺序根据返回值的前一个值进行更改。

    Color management system using measured device data

    公开(公告)号:US07106474B1

    公开(公告)日:2006-09-12

    申请号:US09540012

    申请日:2000-03-31

    CPC classification number: H04N1/603

    Abstract: Managing color data to transform source color image data from a source device into destination color image data for rendering by a destination device, including accessing a source color data file corresponding to the source device, the source color data file containing source device color characteristic data, constructing a source color transform based on the source device color characteristic data contained in the source color data file, and applying the source color transform to the source color image data to transform the source color image data from a source device color space into interim color image data in an interim color space.

    Creation of transform-based profiles by a measurement-based color management system
    4.
    发明授权
    Creation of transform-based profiles by a measurement-based color management system 有权
    通过基于测量的色彩管理系统创建基于变换的配置文件

    公开(公告)号:US07715070B2

    公开(公告)日:2010-05-11

    申请号:US11121409

    申请日:2005-05-03

    CPC classification number: H04N1/6058 H04N1/6088

    Abstract: A method and apparatus for generating transform-based color profiles by a measurement-based Color Management System (CMS). The measurement-based CMS generates the transform-based profile wherein the measurement-based color system is parameterized by color data and procedures. The CMS may use a reference Profile Connection Space (PCS) loaded from a measurement profile, thus enabling user configuration of the generation process. The reference PCS may also be set to include a gamut that is appropriate for an eventual color-output device. In addition, a Gamut Mapping Model (GMM) used in the generation process is user-selectable as well as a Device Model (DM). The DM may also be supplied as a pluggable module. The CMS also features user-selectable mapping from an International Color Consortium (ICC) intent to a PCS profile and to a DM. The features of the CMS may be used in an application, stand-alone profiling tool or in an operating system utility.

    Abstract translation: 一种用于基于测量的色彩管理系统(CMS)生成基于变换的色彩特征的方法和装置。 基于测量的CMS生成基于变换的简档,其中基于测量的颜色系统由颜色数据和过程参数化。 CMS可以使用从测量配置文件加载的参考配置文件连接空间(PCS),从而使用户可以配置生成过程。 参考PCS也可以被设置为包括适合于最终颜色输出设备的色域。 此外,在生成过程中使用的色域映射模型(GMM)是用户可选择的,以及设备模型(DM)。 DM也可以作为可插拔模块来提供。 CMS还具有从国际色彩联盟(ICC)意图到PCS配置文件和DM的用户可选映射。 CMS的功能可以在应用程序,独立的分析工具或操作系统实用程序中使用。

    Color management with tiered caching scheme

    公开(公告)号:US07129958B2

    公开(公告)日:2006-10-31

    申请号:US10650548

    申请日:2003-08-28

    CPC classification number: H04N1/603

    Abstract: Performing color management of color image data using a device transform by generating an identifier key based on contents of a color measurement profile for a color device, the color measurement profile containing measurement data corresponding to the color device, determining if a device transform corresponding to the identifier key is present in a device transform cache disposed in a persistent memory, loading, in the case that it is determined that a device transform corresponding to the identifier key is present in the device transform cache, the device transform into a program-accessible transient memory, generating, in the case that it is determined that a device transform corresponding to the identifier key is not present in the device transform cache, a device transform based on the measurement data in the color measurement profile, and storing the generated device transform in the device transform cache in correspondence with the identifier key, and transforming the color image data based on the device transform loaded in the program-accessible transient memory.

    Color descriptor data structure
    6.
    发明授权
    Color descriptor data structure 有权
    颜色描述符数据结构

    公开(公告)号:US07366346B2

    公开(公告)日:2008-04-29

    申请号:US10651007

    申请日:2003-08-28

    CPC classification number: H04N1/4078 H04N1/6033

    Abstract: A color descriptor data structure corresponding to a color device, the color descriptor data structure including a reference color data set corresponding to a reference boundary descriptor representing reference colors of the color device based on measured colors from a reference color target, a plausible color data set corresponding to a plausible boundary descriptor representing plausible colors of the color device which are observable, which encompass at least the reference colors of the reference boundary descriptor, and which include a whitest-white color and a blackest-black color, and a neutral color data set corresponding to neutral colors of the color device, the neutral colors extending in range from the whitest-white color to the blackest-black color.

    Abstract translation: 对应于彩色设备的颜色描述符数据结构,所述颜色描述符数据结构包括对应于基于来自参考颜色目标的测量颜色的表示所述颜色设备的参考颜色的参考边界描述符的参考颜色数据集合,合理的颜色数据集 对应于表示可观察到的颜色设备的合理颜色的合理边界描述符,其至少包含参考边界描述符的参考颜色,并且包括最白白色和最黑黑色,以及中性色数据 对应于彩色设备的中性色,中性色从范围从最白白色到最黑黑色。

    Composite color transformation using customized gamut mappings
    7.
    发明授权
    Composite color transformation using customized gamut mappings 有权
    使用定制色域映射的复合颜色转换

    公开(公告)号:US06704442B2

    公开(公告)日:2004-03-09

    申请号:US09440065

    申请日:1999-11-15

    Abstract: A color management system that transforms input image data from an input colorant space to an output colorant space using input and output device appearance transforms and a customizable gamut mapping algorithm. The gamut mapping algorithm is customizable based on the color management session in question, and in particular may be customizable based on the content of the image data, based on a comparison between input device appearance transforms and output device appearance transforms, or based on viewing conditions, output conditions or print media involved. According to the invention, the customizable gamut mapping algorithm is customized based on the current color management session, and the customized gamut mapping algorithm is composited with the input device appearance transform and/or the output device appearance transform thereby yielding one or more transformations that can be applied to the input image data more efficiently than if the transformations (including the gamut mapping algorithm) were applied individually.

    Abstract translation: 使用输入和输出设备外观变换以及可定制的色域映射算法将输入图像数据从输入着色剂空间变换到输出着色剂空间的颜色管理系统。 基于所讨论的颜色管理会话,可以定制色域映射算法,并且可以基于输入设备外观变换和输出设备外观变换之间的比较,或者基于观看条件,基于图像数据的内容来定制色域映射算法 ,输出条件或打印介质。 根据本发明,可定制的色域映射算法是基于当前颜色管理会话来定制的,并且定制的色域映射算法与输入设备外观变换和/或输出设备外观变换合成,从而产生一个或多个可以 与单独应用变换(包括色域映射算法)相比,可以更有效地应用于输入图像数据。

    Color management with tiered caching scheme
    8.
    发明授权
    Color management with tiered caching scheme 有权
    色彩管理采用分层缓存方案

    公开(公告)号:US07561168B2

    公开(公告)日:2009-07-14

    申请号:US11203162

    申请日:2005-08-15

    CPC classification number: H04N1/603

    Abstract: Performing color management of color image data using a device transform by generating an identifier key based on contents of a color measurement profile for a color device, the color measurement profile containing measurement data corresponding to the color device, determining if a device transform corresponding to the identifier key is present in a device transform cache disposed in a persistent memory, loading, in the case that it is determined that a device transform corresponding to the identifier key is present in the device transform cache, the device transform into a program-accessible transient memory, generating, in the case that it is determined that a device transform corresponding to the identifier key is not present in the device transform cache, a device transform based on the measurement data in the color measurement profile, and storing the generated device transform in the device transform cache in correspondence with the identifier key, and transforming the color image data based on the device transform loaded in the program-accessible transient memory.

    Abstract translation: 通过基于颜色设备的颜色测量轮廓的内容生成标识符键来执行彩色图像数据的颜色管理,所述颜色测量简档包含与颜色设备相对应的测量数据,确定是否对应于 标识符密钥存在于设置在永久存储器中的设备变换高速缓存中,在确定对应于标识符密钥的设备变换存在于设备变换高速缓存中的情况下加载,设备转换为可编程可访问的瞬变 存储器,在确定对应于标识符密钥的设备变换不存在于设备变换高速缓存中的情况下,生成设备基于颜色测量简档中的测量数据进行变换,并将生成的设备变换存储在 与标识符键对应的设备变换高速缓存,并且转换颜色ima 基于在程序可访问的瞬态存储器中加载的设备变换的ge数据。

    Source device to destination device transform using black weight
    9.
    发明授权
    Source device to destination device transform using black weight 有权
    使用黑色重量的源设备到目标设备转换

    公开(公告)号:US07489815B2

    公开(公告)日:2009-02-10

    申请号:US11039492

    申请日:2005-01-18

    CPC classification number: H04N1/6022

    Abstract: The present invention relates to a color management method for controlling the amount of black ink used by a destination device with a black channel when converting colors from one of a plurality of source device color spaces to destination device color space. This conversion is accomplished by obtaining a black weight of a source pixel in the source device color space, transforming the source pixel into a color in color appearance space, and calculating destination values based on the color in color appearance space and the obtained black weight. In the case that the source device color space does not include a black channel, the black weight is obtained from a color purity of the source pixel. In the case that the source device color space is a device space including a K channel, the black weight is obtained from the K channel.

    Abstract translation: 本发明涉及一种颜色管理方法,用于当从多个源设备色彩空间中的一个转换为目的地设备颜色空间的颜色时,控制由黑色通道使用的目标设备的黑色墨的量。 该转换是通过获得源设备颜色空间中的源像素的黑色权重,将源像素转换为彩色外观空间中的颜色,并且基于颜色外观空间中的颜色和所获得的黑色权重来计算目的地值来实现的。 在源设备颜色空间不包括黑色通道的情况下,从源像素的色纯度获得黑色重量。 在源设备颜色空间是包括K通道的设备空间的情况下,从K通道获得黑色权重。

    Gamut mapping between multiple boundary regions
    10.
    发明授权
    Gamut mapping between multiple boundary regions 有权
    多个边界区域之间的色域映射

    公开(公告)号:US07433077B2

    公开(公告)日:2008-10-07

    申请号:US10651232

    申请日:2003-08-28

    CPC classification number: H04N1/6058

    Abstract: Mapping color image data from a source color gamut to a destination color gamut, wherein the mapping includes identifying source color boundary regions in the source color gamut based on descriptor data provided in a source color descriptor data structure, and determining a position of each identified source color boundary region, identifying destination color boundary regions in the destination color gamut based on descriptor data provided in a destination color descriptor data structure, and determining a position of each identified destination color boundary region, and mapping the color image data from the identified source color boundary regions to the identified destination color boundary regions based on a correspondence between the determined positions of the identified source color boundary regions and the determined positions of the identified destination color boundary regions.

    Abstract translation: 将颜色图像数据从源色域映射到目标色域,其中所述映射包括基于源颜色描述符数据结构中提供的描述符数据来识别源色域中的源颜色边界区域,以及确定每个标识源的位置 颜色边界区域,基于目的色彩描述符数据结构中提供的描述符数据识别目的色域中的目的色边界区域,以及确定每个识别的目标色边界区域的位置,以及从所识别的源颜色映射彩色图像数据 基于所识别的源色彩边界区域的确定位置与所确定的目标色彩边界区域的确定位置之间的对应关系,将所述边界区域映射到所识别的目的地色域区域。

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