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1. 发明申请

WO2005065092A3 DYNAMIC GENERATION OF COLOR LOOK-UP TABLES 审中-公开
标题翻译：颜色查找表的动态生成
公开(公告)号：WO2005065092A3
公开(公告)日：2006-09-21
申请号：PCT/US2004038938
申请日：2004-11-22
申请人： CANON KK , ALTENHOF-LONG CAMERON , TIN SIU-KEI
发明人： ALTENHOF-LONG CAMERON , TIN SIU-KEI
IPC分类号： G06K9/00 , H04N1/60
CPC分类号： G06K9/00 , H04N1/60
摘要： Creating a look-up table which converts color image data from a device-independent color space to a device-dependent color space, by determining a range of lightness values corresponding to a lightness value of a target data point in device-independent color space, searching a predetermined set of data points in device-independent color space to obtain a selected set of data points, each selected data point having a lightness value within the determined range of lightness values and having corresponding device-dependent component values within a predetermined tolerance level of the component values of a previously-determined device-dependent data point, performing a weighted interpolation on the device-dependent component values corresponding to the selected set of data points to calculate an interpolated data point which is in device-dependent color space, and entering the interpolated device-dependent data point into a look-up table entry corresponding to the device-independent target data point.
摘要翻译：通过确定与设备无关的色彩空间中的目标数据点的亮度值相对应的亮度值的范围来创建查找表，该查找表将彩色图像数据从与设备无关的色彩空间转换为与设备有关的色彩空间，在设备无关颜色空间中搜索预定的一组数据点以获得所选择的一组数据点，每个所选择的数据点具有在确定的亮度值范围内的亮度值，并且具有在预定公差等级内的相应的设备相关分量值对先前确定的设备相关数据点的分量值进行加权插值，对与所选择的数据点集合相对应的依赖于设备的分量进行加权内插，以计算处于设备相关色空间的内插数据点;以及将内插的与设备相关的数据点输入到与设备无关的容量对应的查找表条目中 t数据点。

2. 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。

3. 发明申请

WO2005114981A2 CHARACTERIZING COLOR INPUT DEVICES WITH WELL-BEHAVED EXTRAPOLATION 审中-公开
标题翻译：表征有色输入设备与有缺陷的外推
公开(公告)号：WO2005114981A2
公开(公告)日：2005-12-01
申请号：PCT/US2005/014647
申请日：2005-04-29
申请人： CANON KABUSHIKI KAISHA , TIN, Siu-Kei
发明人： TIN, Siu-Kei
IPC分类号： H04N1/56
CPC分类号： H04N1/6016 , H04N1/56
摘要： The present invention generates a color characterization model for performing transformation from a device-dependent color space of a color device to a device-independent color space. A first set of color measurement data is accessed corresponding to actual measurements of the color device, wherein the actual measurements define a measurement range in the device-dependent color space, and wherein the measurement data includes data point pairs, each data point pair having corresponding device-dependent values and device-independent values. Next, a second set of data point pairs is generated based on a predesignated set of device-dependent values outside the measurement range, by extrapolating device-independent values from the first set of color measurement data. The color characterization model is then determined based on both the first set of color measurement data and the generated second set of data point pairs. Because the color characterization model is determined based on actual measurements and extrapolated values, the color characterization model is wellbehaved and does not exhibit significant overshooting or undershooting beyond the measurement range.
摘要翻译：本发明产生用于执行从颜色设备的依赖于设备的颜色空间到与设备无关的颜色空间的变换的颜色表征模型。对应于彩色设备的实际测量访问第一组颜色测量数据，其中实际测量定义了与设备相关的色彩空间中的测量范围，并且其中测量数据包括数据点对，每个数据点对具有对应的设备相关值和设备无关值。接下来，通过外推与第一组颜色测量数据相关的与设备无关的值，基于预定指定的与测量范围之外的设备相关值的集合来生成第二组数据点对。然后基于第一组颜色测量数据和所生成的第二组数据点对来确定颜色表征模型。因为颜色表征模型是基于实际测量和外推值确定的，所以颜色表征模型是健康的，并且不会出现超出测量范围的显着过冲或下冲。

4. 发明申请

WO2005114552A1 CHARACTERIZATION OF DISPLAY DEVICES BY AVERAGING CHROMATICITY VALUES 审中-公开
标题翻译：通过平均色度值来表征显示器件
公开(公告)号：WO2005114552A1
公开(公告)日：2005-12-01
申请号：PCT/US2005/013608
申请日：2005-04-21
申请人： CANON KABUSHIKI KAISHA , TIN, Siu-Kei
发明人： TIN, Siu-Kei
IPC分类号： G06K9/00
CPC分类号： G09G5/02 , G09G2320/0693 , G09G2360/145 , H04N1/6033 , H04N9/73 , H04N17/02 , H04N17/04
摘要： The present invention provides a method for characterizing display devices. Initially, a plurality of colors are generated on the display device. The generated colors are measured and a black point and a white point are determined. The measured colors are then corrected for the determined black point in order to obtain a plurality of chromaticity values. The chromaticity values of the corrected color values are averaged, and a tristimulus matrix is generated with the averaged chromaticity values and the determined white point. By averaging the chromaticity values of black-point-corrected measurements, the present invention is able to create more accurate display device characterizations that account for the effects of flare. In addition, by averaging the chromaticity values of black-point-corrected measurements, the present invention minimizes the effects of inaccurate color measurements made during the device characterization process.
摘要翻译：本发明提供一种表征显示装置的方法。最初，在显示装置上生成多种颜色。测量生成的颜色，并确定黑点和白点。然后对所确定的黑点校正所测量的颜色，以获得多个色度值。校正的色值的色度值被平均，并且产生具有平均色度值和所确定的白点的三刺激矩阵。通过平均黑点校正测量的色度值，本发明能够创建更准确的显示装置表征，其说明了耀斑的影响。此外，通过平均黑点校正测量的色度值，本发明使得在器件表征过程中进行的不精确的颜色测量的影响最小化。

5. 发明申请

WO2011075443A1 STEREOSCOPIC COLOR MANAGEMENT 审中-公开
标题翻译：立体颜色管理
公开(公告)号：WO2011075443A1
公开(公告)日：2011-06-23
申请号：PCT/US2010/060118
申请日：2010-12-13
申请人： CANON KABUSHIKI KAISHA , TIN, Siu-Kei
发明人： TIN, Siu-Kei
IPC分类号： G09G5/02
CPC分类号： H04N13/133 , H04N13/15
摘要： Stereoscopic color management of images with plural views. Image data for each view is defined in a component input device color space. Image data in the component input device color spaces is converted to a nominal source color space using plural input transforms each corresponding to one of the plural views. A rendering transform is used to convert image data for each view in the nominal source color space to a nominal destination color space. The nominal source color space, nominal destination color space and rendering transform are the same for all views. The image data for each view in the nominal destination color space is ultimately converted to a component output device color space associated with a stereoscopic output device respective of the view using a respective output transform.
摘要翻译：具有多视图的立体视觉颜色管理。每个视图的图像数据在组件输入设备颜色空间中定义。使用与多个视图中的一个相对应的多个输入变换将分量输入装置色彩空间中的图像数据转换为标称源色彩空间。渲染变换用于将标称源色彩空间中的每个视图的图像数据转换为标称目标色彩空间。标称源色彩空间，标称目标颜色空间和渲染变换对于所有视图都是相同的。在标称目标色彩空间中的每个视图的图像数据最终被转换成与使用相应输出变换的视图相对应的立体输出设备相关联的分量输出设备颜色空间。

6. 发明申请

WO2009094154A1 GAMUT MAPPING IN SPECTRAL SPACE BASED ON AN OBJECTIVE FUNCTION 审中-公开
标题翻译：基于目标函数的光谱映射中的GAMUT映射
公开(公告)号：WO2009094154A1
公开(公告)日：2009-07-30
申请号：PCT/US2009/000390
申请日：2009-01-22
申请人： CANON KABUSHIKI KAISHA , TIN, Siu-kei
发明人： TIN, Siu-kei
IPC分类号： G09G5/02
CPC分类号： H04N1/6058
摘要： Mapping spectral colors in an Interim Connection Space (ICS) of a full spectral space based on an objective function is provided. A spectral color value in the ICS is accessed, and a spectral gamut boundary of the destination gamut is accessed. The spectral color value is mapped into mapped spectral color value based on minimization of an objective function of coordinates of a first subspace of the ICS, by fixing coordinates of a second subspace of the ICS, subject to a constraint that a result is within the spectral gamut boundary. The first subspace is a null space of a transformation from the ICS to a color space, while the second subspace is an orthogonal complement of the first subspace in the ICS. The constraint is determined by a gamut section that is an intersection of the spectral gamut in the ICS and an affine subspace characterized by the fixed coordinates of the second subspace.
摘要翻译：提供了基于目标函数的全光谱空间的中间连接空间（ICS）中的光谱颜色映射。访问ICS中的光谱颜色值，并访问目标色域的色域边界。基于ICS的第一子空间的坐标的目标函数的最小化，通过固定ICS的第二子空间的坐标，光谱颜色值被映射到映射的光谱颜色值，受限于结果在光谱内色域边界第一个子空间是从ICS到颜色空间的变换的零空间，而第二个子空间是ICS中第一个子空间的正交互补。该约束由作为ICS中的色域和与第二子空间的固定坐标表征的仿射子空间的交集的色域部分确定。

7. 发明申请

WO2005109312A3 COLOR CHARACTERIZATION USING COLOR VALUE CLIPPING 审中-公开
公开(公告)号：WO2005109312A3
公开(公告)日：2005-11-17
申请号：PCT/US2005/014650
申请日：2005-04-29
申请人： CANON KABUSHIKI KAISHA , TIN, Siu-Kei
发明人： TIN, Siu-Kei
IPC分类号： G06K9/00
摘要： A method for correcting a color value generated by a forward model for a color input device. A color value generated by the forward model is mapped into a color space. The color value is clipped to a locus of a visual gamut in the color space if the color value falls outside of the visual gamut. Clipping the mapped color value ensures that the color input device generates color values that represent colors within the human visual system. Clipping may be accomplished by clipping a color value to an intersection of a locus boundary and a vector between the color value and a white point. The locus used may be the CIE spectral locus projected into the color space. Any number of standard color spaces may be used in the method, such as CIEXYZ, CIELUV, or CIELAB.

8. 发明申请

WO2005065092A2 DYNAMIC GENERATION OF COLOR LOOK-UP TABLES 审中-公开
标题翻译：颜色查看表的动态生成
公开(公告)号：WO2005065092A2
公开(公告)日：2005-07-21
申请号：PCT/US2004/038938
申请日：2004-11-22
申请人： CANON KABUSHIKI KAISHA , ALTENHOF-LONG, Cameron , TIN, Siu-Kei
发明人： ALTENHOF-LONG, Cameron , TIN, Siu-Kei
IPC分类号： G06K9/00 , H04N1/60
CPC分类号： G06K9/00 , H04N1/60
摘要： Creating a look-up table which converts color image data from a device-independent color space to a device-dependent color space, by determining a range of lightness values corresponding to a lightness value of a target data point in device-independent color space, searching a predetermined set of data points in device-independent color space to obtain a selected set of data points, each selected data point having a lightness value within the determined range of lightness values and having corresponding device-dependent component values within a predetermined tolerance level of the component values of a previously-determined device-dependent data point, performing a weighted interpolation on the device-dependent component values corresponding to the selected set of data points to calculate an interpolated data point which is in device-dependent color space, and entering the interpolated device-dependent data point into a look-up table entry corresponding to the device-independent target data point.
摘要翻译：通过在与设备无关的色彩空间中确定与目标数据点的亮度值相对应的亮度值的范围，创建查找表，该查找表将彩色图像数据从与设备无关的色彩空间转换为与设备有关的色彩空间，搜索与设备无关的颜色空间中的预定的一组数据点以获得所选择的一组数据点，每个所选择的数据点具有所确定的亮度值范围内的亮度值，并且具有在预定公差等级内的对应的依赖于设备的分量值对先前确定的设备相关数据点的分量值进行加权内插，对与所选择的数据点集合相对应的与设备有关的分量值进行加权内插，以计算处于设备相关的色彩空间的内插数据点;以及将内插的与设备相关的数据点输入到与设备无关的容器对应的查找表条目中 t数据点。

9. 发明申请

WO2012040162A1 COLOR CORRECTION FOR DIGITAL IMAGES 审中-公开
标题翻译：数字图像的彩色校正
公开(公告)号：WO2012040162A1
公开(公告)日：2012-03-29
申请号：PCT/US2011/052296
申请日：2011-09-20
申请人： CANON KABUSHIKI KAISHA , TIN, Siu-Kei
发明人： TIN, Siu-Kei
IPC分类号： G09G5/02
CPC分类号： H04N1/60
摘要： Colors in a color image are transformed by a destination device. The color image comprises pixels with color information. A depth map corresponding to the color image is accessed. The depth map comprises depth information for the color image and indicates the relative position of objects in the color image from a reference point of view. A collection of plural different color transforms is accessed. In addition, a depth value for a target pixel in the color image is determined by using the depth map. There is a selection of a color transform for the target pixel from the collection of plural different color transforms, based on the depth value determined for the target pixel. The selected color transform is applied to the color information of the target pixel by the destination device.
摘要翻译：彩色图像中的颜色由目标设备转换。彩色图像包括具有彩色信息的像素。访问与彩色图像对应的深度图。深度图包括彩色图像的深度信息，并且从参考的角度指示对象在彩色图像中的相对位置。访问多个不同颜色变换的集合。此外，通过使用深度图来确定彩色图像中的目标像素的深度值。基于为目标像素确定的深度值，从多个不同颜色变换的集合中选择针对目标像素的颜色变换。所选择的颜色变换被目标设备应用于目标像素的颜色信息。

10. 发明申请

WO2009070222A1 GENERATING A TRANSFORMED INTERIM CONNECTION SPACE FOR SPECTRAL DATA 审中-公开
标题翻译：生成用于光谱数据的变换中间连接空间
公开(公告)号：WO2009070222A1
公开(公告)日：2009-06-04
申请号：PCT/US2008/012895
申请日：2008-11-19
申请人： CANON KABUSHIKI KAISHA , TIN, Siu-kei
发明人： TIN, Siu-kei
IPC分类号： G06K9/00
CPC分类号： H04N1/64 , H04N1/60
摘要： Generation of a transformed Interim Connection Space for spectral data is provided. A first Interim Connection Space for spectral data in a full spectral space is accessed. A first map, which characterizes a linear transformation from the full spectral space to a first color space, is accessed. A second map, which characterizes a linear transformation from the first Interim Connection Space to the first color space, is determined. The first Interim Connection Space is decomposed into orthogonal subspaces, the orthogonal subspaces including a first subspace that is a null space of the second map and a second subspace that is an orthogonal complement of the null space in the first Interim Connection Space. The transformed Interim Connection Space is generated based on the first subspace and the second subspace.
摘要翻译：提供了用于光谱数据的变换的临时连接空间的生成。访问完整光谱空间中的光谱数据的第一个临时连接空间。访问表征从完整光谱空间到第一颜色空间的线性变换的第一映射。确定表征从第一中间连接空间到第一颜色空间的线性变换的第二图。第一中间连接空间被分解为正交子空间，正交子空间包括作为第二映射的零空间的第一子空间和作为第一中间连接空间中的零空间的正交补数的第二子空间。基于第一子空间和第二子空间生成变换后的临时连接空间。

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