公开(公告)号：US07567362B2

公开(公告)日：2009-07-28

申请号：US11208472

申请日：2005-08-19

Applicant: Siu-Kei Tin

Inventor： Siu-Kei Tin

IPC: G03F3/08

CPC classification number: H04N1/6058 ,  H04N1/603

Abstract: The present invention provides for a performing a type of gamut operation for a color device given a color input value, the color device being characterized by a gamut boundary comprising a collection of gamut boundary triangles. Boundary line elements are determined that correspond to a subset of the collection of gamut boundary triangles. The subset of the collection of gamut boundary triangles does not include gamut boundary triangles which are unlikely to yield useful results based on the type of gamut operation and the color input value. Each boundary line element represents a line segment defined by an intersection of one of the gamut boundary triangles within the subset of the collection of gamut boundary triangles with a hue plane, and the hue plane is within the gamut boundary and based on the color input value. In addition, a result is determined for the gamut operation using one or more of the determined boundary line elements. Accordingly, a type of gamut operation is performed using a descriptor which represents the gamut boundary of the color device.

Abstract translation: 本发明提供了对于给定彩色输入值的彩色设备执行类型的色域操作，该彩色设备的特征在于包括色域边界三角形的集合的色域边界。 确定对应于色域边界三角形集合的子集的边界线元素。 色域边界三角形集合的子集不包括根据色域操作类型和颜色输入值不太可能产生有用结果的色域边界三角形。 每个边界线元素表示由具有色调平面的色域边界三角形集合的子集内的一个色域边界三角形的交点定义的线段，并且色相平面在色域边界内并且基于颜色输入值 。 此外，使用所确定的边界线元素中的一个或多个来确定用于色域操作的结果。 因此，使用表示彩色设备的色域边界的描述符来执行色域操作的类型。

公开(公告)号：US07420706B2

公开(公告)日：2008-09-02

申请号：US10840321

申请日：2004-05-06

Applicant: Siu-Kei Tin

Inventor： Siu-Kei Tin

IPC: H04N1/40

CPC classification number: H04N1/6016 ,  H04N1/56

Abstract: 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 well-behaved and does not exhibit significant overshooting or undershooting beyond the measurement range.

Abstract translation: 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值和外推值确定的，所以颜色表征模型是良好的，并且不会出现超出测量范围的显着过冲或下冲。

公开(公告)号：US07414753B2

公开(公告)日：2008-08-19

申请号：US10840539

申请日：2004-05-06

Applicant: Siu-Kei Tin

Inventor： Siu-Kei Tin

IPC: H04N1/40

CPC classification number: H04N1/60

Abstract: A color characterization process utilizing nonlinear regression analysis to characterize a color input device. The color input device is used to generate a bitmap of device dependent values from a color target. The bitmap of device dependent color values is used to generate a forward model that maps device dependent color values to color values in a device independent color space using a nonlinear regression analysis that minimizes a color difference metric between the reference color values and the set of device dependent color values mapped through the forward model. The color difference metric is chosen to represent human perceived color differences in the device independent color space. The performance of the nonlinear regression analysis may be improved by initializing the nonlinear regression analysis using an initial forward model generated from a linear regression analysis.

Abstract translation: 使用非线性回归分析来表征颜色输入设备的颜色表征过程。 颜色输入设备用于从颜色目标生成与设备相关的值的位图。 设备相关颜色值的位图用于生成将设备相关颜色值映射到设备独立颜色空间中的颜色值的正向模型，该非线性回归分析使参考颜色值和设备组之间的色差度量最小化 通过前向模型映射的依赖颜色值。 选择色差度量来表示设备独立颜色空间中人感知的颜色差异。 通过使用从线性回归分析产生的初始正向模型初始化非线性回归分析可以提高非线性回归分析的性能。

公开(公告)号：US07365755B2

公开(公告)日：2008-04-29

申请号：US11400549

申请日：2006-04-07

Applicant: Siu-Kei Tin

Inventor： Siu-Kei Tin

IPC: G09G5/02 ,  G06K9/00 ,  G06F15/00 ,  G06T11/00 ,  H04N1/60 ,  H04N5/455

CPC classification number: H04N1/6058

Abstract: The present invention provides for gamut mapping between a source device and a destination device, the destination device having a destination device black point with a hue, and the source device and the destination device being respectively characterized by a source gamut shell and a destination gamut shell. A lightness compression is performed using the source gamut shell, the destination gamut shell and the destination device black point. A constant lightness transformation is performed, wherein the constant lightness transformation modifies the destination gamut shell so that a shell boundary of the destination gamut shell on the hue plane containing the destination device black point is shifted from an original position to align with a neutral axis of the destination gamut shell. A chroma compression is performed using the source gamut shell and the modified destination gamut shell. An inverse constant lightness transformation is performed to obtain mapped colors for the destination device, wherein the inverse constant lightness transformation returns the shell boundary to the original position. As such, dark, almost neutral colors can be produced with virtually the highest possible density for the destination device.

Abstract translation: 本发明提供了源设备和目的地设备之间的色域映射，目的地设备具有目的地设备黑点与色调，源设备和目的地设备分别由源色域外壳和目的地色域外壳 。 使用源色域外壳，目标色域外壳和目标设备黑点进行亮度压缩。 执行恒定亮度变换，其中恒定亮度变换修改目标色域壳，使得包含目的地设备黑点的色调平面上的目的色域壳的壳边界从原始位置偏移到与中心轴 目的地色域shell。 使用源色域外壳和修改的目标色域外壳执行色度压缩。 执行逆恒定亮度变换以获得目标设备的映射颜色，其中逆常数亮度变换将壳边界返回到原始位置。 因此，可以以目的地设备实际上具有最高可能密度来生产黑色，几乎中性的颜色。

公开(公告)号：US07148902B2

公开(公告)日：2006-12-12

申请号：US10956445

申请日：2004-10-01

Applicant: Siu-Kei Tin

Inventor： Siu-Kei Tin

IPC: G09G5/02

CPC classification number: G09G5/02 ,  G01J3/46 ,  G01J3/462 ,  G01J3/506 ,  G09G3/001 ,  G09G2360/145

Abstract: The present invention transforms a device-dependent color value in a device-dependent color space of a display device to a device-independent color value in a device-independent color space. A first color value is determined in a perceptually linear color space by applying a matrix model to the device-dependent color value, the matrix model applying a tone curve correction and a tristimulus matrix to the device-dependent color value. A difference value is then determined in the perceptually linear color space, wherein the difference value is determined by applying a difference model to the device-dependent color value, and wherein the difference model models deviation of the matrix model from actual measurements of the display device. Next, the difference value and the first color value are added and the sum is transformed to the device-independent color space. Because the first value based on the matrix model is added to a difference value which accounts for deviation of the matrix model, the present invention can account for the channel interdependency prevalent in DLP display devices.

Abstract translation: 本发明将设备相关的显示设备的色彩空间中的设备相关的颜色值转换为与设备无关的颜色空间中与设备无关的颜色值。 通过将矩阵模型应用于依赖于设备的颜色值，矩阵模型将色调曲线校正和三刺激矩阵应用于与设备相关的颜色值，在感知线性颜色空间中确定第一颜色值。 然后在感知线性颜色空间中确定差值，其中通过将差异模型应用于与设备相关的颜色值来确定差值，并且其中差分模型将矩阵模型与显示设备的实际测量值的偏差建模 。 接下来，添加差值和第一颜色值，并将和转换为与设备无关的颜色空间。 由于将基于矩阵模型的第一值加到考虑了矩阵模型的偏差的差分值，所以本发明可以解释在DLP显示装置中普遍存在的信道相互依赖性。

公开(公告)号：US20140055792A1

公开(公告)日：2014-02-27

申请号：US13595058

申请日：2012-08-27

Applicant: Siu-Kei Tin

Inventor： Siu-Kei Tin

IPC: G01B11/30 ,  G01N21/49

CPC classification number: G01B9/02094 ,  G01B11/162 ,  G01B11/303 ,  G01N21/47

Abstract: A surface roughness value and a sub-surface scattering property of a material are estimated. The material is illuminated with a light beam with controlled coherence properties at multiple incident angles. Multiple speckle patterns are recorded, each speckle pattern being recorded for a respective one of the multiple incident angles. Both of a surface roughness value and a sub-surface scattering property of the material are estimated by calculations using the multiple speckle patterns and the incident angle for each such speckle pattern.

Abstract translation: 估计材料的表面粗糙度值和亚表面散射性。 材料用具有多个入射角的受控相干特性的光束照射。 记录多个斑纹图案，针对多个入射角中的相应一个记录每个散斑图案。 通过使用多个散斑图案和每个这样的斑点图案的入射角的计算来估计材料的表面粗糙度值和亚表面散射性。

公开(公告)号：US20140055775A1

公开(公告)日：2014-02-27

申请号：US13592663

申请日：2012-08-23

Applicant: Francisco Imai ,  Siu-Kei Tin

Inventor： Francisco Imai ,  Siu-Kei Tin

IPC: G01B9/02 ,  G01J3/42

CPC classification number: G01J3/42 ,  G01J3/32 ,  G01N21/45 ,  G01N21/4738 ,  G01N2021/479

Abstract: A material is illuminated with one or more light sources including at least one light source which emits light of controlled coherence properties. Both of a spectral characteristic and a speckle statistic are derived using light reflected from the illuminated material. The spectral characteristic and the speckle statistic are compared against plural entries in a database. Each entry in the database correlates the identity of a material against a corresponding spectral characteristic and a corresponding speckle statistic for the material. At least one candidate for the identity of the illuminated material is determined based at least in part on the comparison.

Abstract translation: 材料被一个或多个光源照射，包括至少一个发出受控相干特性的光的光源。 使用从照明材料反射的光导出光谱特征和斑点统计。 将光谱特征和斑点统计量与数据库中的多个条目进行比较。 数据库中的每个条目将材料的身份与材料的相应光谱特性和相应的斑点统计量相关联。 至少部分地基于比较来确定照明材料的身份的至少一个候选者。

公开(公告)号：US20140049779A1

公开(公告)日：2014-02-20

申请号：US13589577

申请日：2012-08-20

Applicant: Siu-Kei Tin ,  Francisco Imai

Inventor： Siu-Kei Tin ,  Francisco Imai

IPC: G01J3/45 ,  G06F17/18 ,  G01B11/30

CPC classification number: G01B11/30 ,  G01B9/02094 ,  G01B11/303 ,  G01N21/474 ,  G01N2021/479

Abstract: A property of a material is determined. The material is illuminated with a light beam of controlled spectral and coherence properties. A stack of speckle field images is recorded from speckle fields reflected from the illuminated material in multiple spectral channels. The stack of speckle field images includes multiple speckle field images each being recorded in a respectively different spectral channel. Statistical properties of the speckle field images in the stack of speckle field images are analyzed to determine at least one property of the illuminated material.

Abstract translation: 确定材料的属性。 材料用受控光谱和相干性质的光束照射。 从多个光谱通道中的照明材料反射的散斑场记录一堆斑点场图像。 斑点场图像的堆叠包括多个斑点场图像，每个斑点场图像被记录在分别不同的光谱通道中。 分析斑点场图像堆叠中的斑点场图像的统计特性，以确定照明材料的至少一个属性。

公开(公告)号：US08615140B2

公开(公告)日：2013-12-24

申请号：US13300447

申请日：2011-11-18

Applicant: Siu-Kei Tin

Inventor： Siu-Kei Tin

IPC: G06K9/46

CPC classification number: H04N19/167 ,  H04N19/124 ,  H04N19/13 ,  H04N19/176 ,  H04N19/60

Abstract: Compression of image data is provided. Image data is accessed, along with depth information for pixels of an image. A distance from a region of focus for pixels of the image is determined, by calculations that use the depth information. A bit rate for compression of the image data is controlled in accordance with the distance from the region of focus, such that more bits are used for pixels closer to the region of focus and fewer bits are used for pixels farther from the region of focus.

Abstract translation: 提供压缩图像数据。 访问图像数据以及图像像素的深度信息。 通过使用深度信息的计算来确定与图像的像素的焦点区域的距离。 根据与聚焦区域的距离来控制图像数据的压缩比特率，使得更靠近聚焦区域的像素使用更多的比特，并且较少的比特被用于距聚焦区域更远的像素。

公开(公告)号：US08564647B2

公开(公告)日：2013-10-22

申请号：US12764910

申请日：2010-04-21

Applicant: Siu-Kei Tin

Inventor： Siu-Kei Tin

IPC: H04N9/65 ,  H04N9/70 ,  H04N13/04

CPC classification number: G09G3/003 ,  G09G5/06 ,  G09G2320/0285 ,  G09G2320/0666 ,  H04N9/67 ,  H04N13/133 ,  H04N13/302 ,  H04N13/305 ,  H04N13/31 ,  H04N13/324 ,  H04N13/351 ,  H04N13/376

Abstract: Color correction of an autostereoscopic color display capable of displaying multiple views of one scene. Multiple viewing regions of the autostereoscopic color display are identified. The multiple viewing regions together comprise the whole of an operating viewing zone for the autostereoscopic color display. A respective plurality of color correction LUTs are constructed. At least one color correction LUT is constructed for each different viewing region. Color correction LUTs corresponding to current viewing regions are selected based on information regarding viewer location. The selected color correction LUTs are applied to the autostereoscopic color display.

Abstract translation: 能够显示一个场景的多个视图的自动立体彩色显示器的颜色校正。 识别自动立体彩色显示器的多个观看区域。 多个观看区域一起构成用于自动立体彩色显示的整个操作观看区域。 构成相应的多个颜色校正LUT。 为每个不同的观看区域构建至少一个颜色校正LUT。 基于关于观看者位置的信息来选择与当前观看区域对应的色彩校正LUT。 所选择的颜色校正LUT被应用于自动立体彩色显示。