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1. 发明申请

WO2005022328A2 GAMUT MAPPING BETWEEN MULTIPLE BOUNDARY REGIONS 审中-公开
标题翻译：多边界区域之间的GAMUT映射
公开(公告)号：WO2005022328A2
公开(公告)日：2005-03-10
申请号：PCT/US2004/027804
申请日：2004-08-27
申请人： CANON KABUSHIKI KAISHA , NEWMAN, Todd, D. , HAIKIN, John, S. , HENLEY, Sharon, A.
发明人： NEWMAN, Todd, D. , HAIKIN, John, S. , HENLEY, Sharon, A.
IPC分类号： G06F
CPC分类号： H04N1/6058
摘要： 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 of 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.
摘要翻译：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，以及确定每个识别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确定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，识别的目标色彩边界区域的边界区域。

2. 发明申请

WO2006036424A2 COLOR APPEARANCE SPACE TO CMYK MAPPING USING RELATIVE PURITY 审中-公开
标题翻译：使用相对纯度的彩色外观空间到CMYK映射
公开(公告)号：WO2006036424A2
公开(公告)日：2006-04-06
申请号：PCT/US2005/030611
申请日：2005-08-26
申请人： CANON KABUSHIKI KAISHA , HAIKIN, John, S. , NEWMAN, Todd, D. , HENLEY, Sharon, A.
发明人： HAIKIN, John, S. , NEWMAN, Todd, D. , HENLEY, Sharon, A.
IPC分类号： H04N1/60
CPC分类号： H04N1/6025
摘要： The present invention relates to a color management method for the conversion of internal color appearance space color values to CMYK device values, by interpolating CMY values from a plurality of CMY to color appearance space lookup tables, wherein each CMY table is associated with a specific value of K. A target internal color value is received and the relative purity of that color is calculated in the CMY space. Next, a black generation value is calculated using the relative purity of the target color. Finally, one of the plurality of CMY lookup tables is selected based on the black generation value, and a CMYK value is provided based on an interpolation from the selected lookup table. In this way, the present invention is able to control the output K value in a color appearance space to CMYK conversion. Accordingly, colors across a wide relative purity range, including natural images, can be reproduced with better accuracy and higher quality.
摘要翻译：本发明涉及一种通过将CMY值从多个CMY内插到颜色外观空间查找表来将内部颜色外观空间颜色值转换为CMYK设备值的颜色管理方法，其中每个CMY表与特定值相关联的K.接收目标内部颜色值，并且在CMY空间中计算该颜色的相对纯度。接下来，使用目标颜色的相对纯度计算黑色代数值。最后，基于黑色生成值选择多个CMY查找表中的一个，并且基于来自所选择的查找表的插值提供CMYK值。以这种方式，本发明能够将颜色外观空间中的输出K值控制为CMYK转换。因此，可以以更高的精度和更高的质量再现包括自然图像的宽相对纯度范围内的颜色。

3. 发明申请

WO2005022442A2 COLOR DESCRIPTOR DATA STRUCTURE 审中-公开
标题翻译：颜色描述符数据结构
公开(公告)号：WO2005022442A2
公开(公告)日：2005-03-10
申请号：PCT/US2004/027803
申请日：2004-08-27
申请人： CANON KABUSHIKI KAISHA , NEWMAN, Todd, D. , HENLEY, Sharon, A. , HAIKIN, John, S.
发明人： NEWMAN, Todd, D. , HENLEY, Sharon, A. , HAIKIN, John, S.
IPC分类号： G06K
CPC分类号： H04N1/4078 , H04N1/6033
摘要： 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.
摘要翻译：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。

4. 发明申请

WO2005109318A2 GENERATION OF COLOR MEASUREMENTS FROM TRANSFORM-BASED COLOR PROFILES AND CREATION OF TRANSFORM-BASED PROFILES BY A MEASUREMENT-BASED COLOR MANAGEMENT SYSTEM 审中-公开
标题翻译：通过基于变量的颜色配置文件生成颜色测量，并通过基于测量的颜色管理系统创建基于变换的配置文件
公开(公告)号：WO2005109318A2
公开(公告)日：2005-11-17
申请号：PCT/US2005/015845
申请日：2005-05-05
申请人： CANON KABUSHIKI KAISHA , HAIKIN, John, S. , NEWMAN, Todd, D.
发明人： HAIKIN, John, S. , NEWMAN, Todd, D.
IPC分类号： G06K9/00
CPC分类号： H04N1/6058 , G06T7/90 , H04N1/6033
摘要： Color measurements are generated from transform-based device profiles for use in a measurement-based color management system. The color measurements are generated by providing device-dependent color samples to a transform-based color management module and converting them to the profile connection space with the device's transform-based profile. Color measurements are then generated from the transform-based color management module by applying an identity profile in place of a destination device profile. In addition, measurement data can be extracted directly from either the tone reproduction curve/matrix or n-dimensional lookup table transforms contained within a transform-based device profile. In addition, a method and apparatus for generating transform-based color profiles by a measurement-based Color Management System (CMS) is provided. 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.
摘要翻译：颜色测量由基于测量的色彩管理系统中基于变换的设备配置文件生成。通过将基于设备的颜色样本提供给基于变换的颜色管理模块并将其转换为与设备的基于变换的配置文件的配置文件连接空间来生成颜色测量。然后通过应用身份简档来代替目的地设备简档，从基于变换的颜色管理模块生成颜色测量。此外，可以直接从包含在基于变换的设备简档中的色调再现曲线/矩阵或n维查找表变换中提取测量数据。另外，提供了一种通过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。

5. 发明申请

WO2005022327A2 COLOR MANAGEMENT WITH TIERED CACHING SCHEME 审中-公开
标题翻译：颜色管理与方法的缓存方案
公开(公告)号：WO2005022327A2
公开(公告)日：2005-03-10
申请号：PCT/US2004/027781
申请日：2004-08-27
申请人： CANON KABUSHIKI KAISHA , NEWMAN, Todd, D. , HAIKIN, John, S.
发明人： NEWMAN, Todd, D. , HAIKIN, John, S.
IPC分类号： G06F
CPC分类号： H04N1/603
摘要： 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 transfonn 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 programaccessible transient memory.
摘要翻译：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转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 ge数据基于设备变换加载到程序可访问的瞬态存储器中。

6. 发明申请

WO2008013583A1 TIME EFFICIENT GENERATION OF COLOR LOOK-UP TABLE 审中-公开
标题翻译：彩色查询表的时间有效产生
公开(公告)号：WO2008013583A1
公开(公告)日：2008-01-31
申请号：PCT/US2007/006987
申请日：2007-03-21
申请人： CANON KABUSHIKI KAISHA , NEWMAN, Todd, D. , HAIKIN, John, S.
发明人： NEWMAN, Todd, D. , HAIKIN, John, S.
IPC分类号： G03F3/08 , G06K15/00
CPC分类号： H04N1/6052 , H04N1/6019 , H04N1/6058
摘要： Color management which uses a color conversion LUT for transformation from an N-dimensional source device color space (N ≥ 4) to a destination device color space, in which the color conversion LUT is constructed in a two-step process. In the first step, an intermediate color conversion LUT is constructed that converts colors in a three-dimensional device-independent color space through a gamut mapping step and through an inverse destination device transform so as to obtain colors in the destination device color space. In the second step, the overall color conversion LUT is obtained by applying a source device transform to color combinations in the source device color space so as to obtain color values in the three- dimensional device-independent color space, and thereafter performing three- dimensional color look-ups in the intermediate color conversion table.
摘要翻译：颜色管理，其使用颜色转换LUT，用于从N维源设备色彩空间（N = 4）到目的地设备色彩空间的变换，其中颜色转换LUT是以两步过程构成的。在第一步骤中，构建了通过色域映射步骤和逆目的地设备变换来转换三维设备无关色彩空间中的颜色以获得目标设备色彩空间中的颜色的中间色彩转换LUT。在第二步骤中，通过将源设备变换应用于源设备颜色空间中的颜色组合以获得与三维设备无关的颜色空间中的颜色值，然后执行三维形状来获得整体颜色转换LUT 中间颜色转换表中的彩色查找。

7. 发明申请

WO2005109319A1 TRANSFORM FOR DESTINATION SPACE WHICH INCLUDES A BLACK CHANNEL 审中-公开
标题翻译：包括黑洞通道的目的地空间变换
公开(公告)号：WO2005109319A1
公开(公告)日：2005-11-17
申请号：PCT/US2005/015972
申请日：2005-05-06
申请人： CANON KABUSHIKI KAISHA , HAIKIN, John, S. , NEWMAN, Todd, D.
发明人： HAIKIN, John, S. , NEWMAN, Todd, D.
IPC分类号： G06K9/00
CPC分类号： H04N1/60
摘要： Three color management approaches are presented. First, CMY values are interpolated from CMYs to color appearance space (CAS) lookup tables, each table associated with a K value. One of CMY lookup tables is selected based on a lightness value and neutrality of a target color value. Next a CMY value is interpolated from the selected lookup table and the target color value so form a converted CMYK with the associated K value. Second, a black weight is obtained (S1202), and calculating destination values based on a transformed color in CAS and the black weight. If the source device color space (SDCS) does not include a black channel, the black weight is obtained from a color purity (S1207). If the SDCS includes a K channel, the black weight is obtained from the K channel (S1206). Third, black weight is obtained form the source module if it is available there, or is calculated based on neutrality and colorfulness of the color in CAS if it is not available at the source module.
摘要翻译：提出了三种颜色管理方法。首先，将CMY值从CMY插值到颜色外观空间（CAS）查找表，每个表与K值相关联。基于目标颜色值的亮度值和中性度来选择CMY查找表之一。接下来，从所选择的查找表和目标颜色值插入CMY值，从而形成具有相关K值的转换CMYK。第二，获得黑色重量（S1202），并且基于CAS中的变换颜色和黑色重量计算目的地值。如果源设备颜色空间（SDCS）不包括黑色通道，则从色纯度获得黑色重量（S1207）。如果SDCS包括K通道，则从K通道获得黑色权重（S1206）。第三，如果源模块可用，则从源模块获得黑色重量，或者如果源模块不可用，则基于CAS中的颜色的中性和多彩度计算。

8. 发明申请

WO2007021331A2 CONFIGURABLE DEVICE MODEL FOR N-CHANNEL DEVICE 审中-公开
标题翻译： N信道设备的可配置设备模型
公开(公告)号：WO2007021331A2
公开(公告)日：2007-02-22
申请号：PCT/US2006/015562
申请日：2006-04-25
申请人： CANON KABUSHIKI KAISHA , NEWMAN, Todd, D. , HAIKIN, John
发明人： NEWMAN, Todd, D. , HAIKIN, John
IPC分类号： H04N1/60
CPC分类号： H04N1/6025
摘要： The present invention provides for a device model that transforms color image data between a device independent color space and a device dependent color space having n colorants. When transforming color from a device independent color space to a device dependent color space, a plurality of colorant sets is obtained, wherein each colorant set is a defined subset of the n colorants which includes some but not all of the n colorants, and wherein the number of defined subsets is smaller than the number of all possible subsets of the n colorants. A transform is generated for each of the colorant sets, wherein each transform maps to a device dependent color space corresponding to the respective colorant set. A search order can be obtained to define an order for searching the transforms. A color composition of the n colorants can be obtained to produce primary and secondary colors. Accordingly, a configurable device model for n- channel printing can be realized.
摘要翻译：本发明提供了一种在设备无关色彩空间和具有n个着色剂的依赖于设备的颜色空间之间转换彩色图像数据的设备模型。当将颜色从设备独立颜色空间转换为依赖于设备的色彩空间时，获得多个着色剂组，其中每个着色剂组是n个着色剂的定义的子集，其包括一些但不是全部的n个着色剂，并且其中定义的子集的数目小于n个着色剂的所有可能子集的数量。为每个着色剂集合生成变换，其中每个变换映射到与相应着色剂组对应的依赖于设备的色彩空间。可以获得搜索顺序来定义搜索变换的顺序。可以获得n种着色剂的颜色组合以产生初级和次级颜色。因此，可以实现用于n-通道打印的可配置设备模型。

9. 发明申请

WO2006081253A2 COLOR CONVERSION USING BARYCENTRIC PROJECTIONS 审中-公开
标题翻译：使用BARYCENTRIC投影的彩色转换
公开(公告)号：WO2006081253A2
公开(公告)日：2006-08-03
申请号：PCT/US2006/002507
申请日：2006-01-26
申请人： CANON KABUSHIKI KAISHA , TIN, Siu-kei , NEWMAN, Todd, D.
发明人： TIN, Siu-kei , NEWMAN, Todd, D.
IPC分类号： G09G5/02
CPC分类号： G06F3/13 , G09G5/04 , G09G5/06 , H04N1/6019
摘要： A method and apparatus for color conversion useful for color devices having a large number of input channels, for example CMYK color printers having additional inks used to enhance the color printer's gamut. The color conversion is performed using a strata collection of look-up tables that stratify an n-dimensional color space into sets of lower dimensional subspaces. For lower dimension subspaces, the associated look-up tables may be closed, while for a higher dimension subspace, an associated look-up table may be open, leaving gaps in the subspace not enclosed by a look-up table. A color management module using the strata collection for color conversion may determine if a color conversion is for a color value that falls within a gap. If so, the color management module may use a relatively complex interpolation process. If not, the color management module may use a relatively simple interpolation process. In one interpolation process, a unit hypercube enclosing the input value is generated based on values from a look up table. A set of boundary conditions are then imposed on the unit hypercube. To perform the actual interpolation, an initial barycentric projection is performed from a selected vertex of the unit hypercube through the input value onto a boundary of the unit hypercube. If the projection satisfies one of the boundary conditions, an interpolated value is calculated using, the projection by back substitution. If the initial projection does not satisfy a boundary condition, an intermediate value is generated from the previous projection and successive barycentric projections are performed using respectively different vertices of the unit hypercube through intermediate values onto a boundary of the unit hypercube until a projection satisfies one of the boundary conditions. An interpolated value is then generated by back substitution using the initial and successive projections.
摘要翻译：用于具有大量输入通道的彩色装置的颜色转换的方法和装置，例如具有用于增强彩色打印机色域的附加墨水的CMYK彩色打印机。使用将n维颜色空间分层为较低维子空间的集合的查找表的层集合执行颜色转换。对于较小维子空间，相关联的查找表可以是关闭的，而对于较高维度的子空间，相关联的查找表可以是打开的，留下子空间中的间隙未被查找表包围。使用用于颜色转换的层集合的颜色管理模块可以确定颜色转换是否适用于落在间隙内的颜色值。如果是这样，则颜色管理模块可以使用相对复杂的插值处理。如果不是，则颜色管理模块可以使用相对简单的内插处理。在一个内插过程中，基于查找表中的值生成包围输入值的单位超立方体。然后在单位超立方体上施加一组边界条件。为了执行实际插值，从单位超立方体的选定顶点通过输入值执行初始重心投影到单位超立方体的边界上。如果投影满足边界条件之一，则使用反向替换的投影来计算内插值。如果初始投影不满足边界条件，则从先前的投影产生中间值，并且使用单位超立方体的分别不同的顶点通过中间值执行连续的重心投影到单位超立方体的边界上，直到投影满足以下边界条件。然后通过使用初始和连续投影的反向替换来生成内插值。

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