公开(公告)号：US07684084B2

公开(公告)日：2010-03-23

申请号：US11860631

申请日：2007-09-25

Applicant: Zhigang Fan ,  Martin S. Maltz ,  Lalit Keshav Mestha ,  Yao Rong Wang ,  Alvaro E. Gil

Inventor： Zhigang Fan ,  Martin S. Maltz ,  Lalit Keshav Mestha ,  Yao Rong Wang ,  Alvaro E. Gil

IPC: H04N1/60 ,  G03F3/00 ,  G06K9/00

CPC classification number: H04N1/60 ,  H04N1/6019

Abstract: Linear transformations of L*a*b* color space are provided to minimize interpolation errors when performing multi-dimensional color space conversions involving lookup tables. Methods are provided for linear transformations (e.g., rotation and shear) to substantially fit the sampling grid to a given printer gamut.

Abstract translation: 提供L * a * b *颜色空间的线性变换，以便在执行涉及查找表的多维颜色空间转换时，最小化插补误差。 提供了用于线性变换（例如旋转和剪切）以将采样网格基本拟合到给定的打印机色域的方法。

公开(公告)号：US07652806B2

公开(公告)日：2010-01-26

申请号：US11961367

申请日：2007-12-20

Applicant: Stuart Alan Schweid ,  Lalit Keshav Mestha ,  Zhigang Fan ,  Alvaro Enrique Gil

Inventor： Stuart Alan Schweid ,  Lalit Keshav Mestha ,  Zhigang Fan ,  Alvaro Enrique Gil

IPC: G03F3/08

CPC classification number: H04N1/6019 ,  G06T11/001

Abstract: A method and system for optimal node placement of a color correction table first generate a high resolution color correction table. A low resolution color correction table is generated. Each node of the low resolution color correction table has a corresponding color correction value generated by interpolating the color correction values of the high resolution color correction table. A reconstructed color correction table is generated, and each of the nodes of the reconstructed color correction table has a corresponding color correction value generated by interpolating the color correction values of the low resolution color correction table using an interpolation method identical to an output device interpolation method. Differences between the color correction values of the reconstructed and the high resolution color correction table are quantified into a measure of error, and the node locations of the low resolution color correction table are adjusted, and the procedure is repeated.

Abstract translation: 用于颜色校正表的最佳节点放置的方法和系统首先生成高分辨率颜色校正表。 生成低分辨率色彩校正表。 低分辨率颜色校正表的每个节点具有通过内插高分辨率颜色校正表的颜色校正值而生成的对应的颜色校正值。 生成重构的颜色校正表，并且重建的颜色校正表的每个节点具有通过使用与输出设备插值方法相同的内插方法内插低分辨率颜色校正表的颜色校正值而生成的对应的颜色校正值 。 将重构和高分辨率色彩校正表的颜色校正值之间的差异量化为误差的量度，并且调整低分辨率颜色校正表的节点位置，并重复该过程。

公开(公告)号：US20090300055A1

公开(公告)日：2009-12-03

申请号：US12273208

申请日：2008-11-18

Applicant: Lalit Keshav Mestha ,  Sohail A. Dianat

Inventor： Lalit Keshav Mestha ,  Sohail A. Dianat

IPC: G06F17/30

CPC classification number: G06F17/3025

Abstract: The computer algorithm described which indexes and retrieves images. A query in the form of an image object or an image facilitates image retrieval in order to retrieve several images close to user's request. A thumbnail form of rank ordered images is provided for viewing. The user selects the images and down loads the images for inclusion in the job. The images are then ripped and printed.

Abstract translation: 描述了用于索引和检索图像的计算机算法。 以图像对象或图像形式的查询便于图像检索，以便检索靠近用户请求的多个图像。 提供排序图像的缩略图形式供查看。 用户选择图像并下载图像以包含在作业中。 然后将图像撕开并打印。

公开(公告)号：US20090296152A1

公开(公告)日：2009-12-03

申请号：US12274846

申请日：2008-11-20

Applicant: Lalit Keshav Mestha ,  Peter Stanley Fisher

Inventor： Lalit Keshav Mestha ,  Peter Stanley Fisher

IPC: G06K15/00

CPC classification number: H04N1/6033

Abstract: This disclosure relates to the color management of image output devices. Specifically, this disclosure provides methods, apparatus and systems to generate a destination printer profile for coated images. According to one exemplary method, the destination printer profile is generated by printing a plurality of color patches which are then coated, measuring the color attributes associated with the coated color patches, and modifying a destination printer profile to compensate for differences between the printed and coated color patches, relative to a respective reference color.

Abstract translation: 本公开涉及图像输出设备的颜色管理。 具体地，本公开提供了用于生成涂覆图像的目的地打印机轮廓的方法，装置和系统。 根据一个示例性方法，通过打印多个色块来生成目的地打印机配置文件，然后将其涂覆，测量与涂覆的色块相关联的颜色属性，以及修改目的地打印机配置文件以补偿印刷和涂布之间的差异 颜色相对于各自的参考颜色。

公开(公告)号：US20090296113A1

公开(公告)日：2009-12-03

申请号：US12273918

申请日：2008-11-19

Applicant: Lalit Keshav Mestha ,  Alvaro Enrique Gil

Inventor： Lalit Keshav Mestha ,  Alvaro Enrique Gil

IPC: H04N1/60

CPC classification number: H04N1/62

Abstract: This disclosure provides methods, systems and apparatus to manage spot colors for an image marking device. Specifically, disclosed is a spot color control method including selecting a gain matrix K from a plurality of gain matrices, the gain matrix K being selected to satisfy performance criteria associated with the rendering of the target spot color, the performance criteria including an acceptable spot color error associated with the rendered spot color relative to the target color, an acceptable actuator energy utilized to achieve the acceptable spot color error and a total toner/ink usage acceptable to render the spot color.

Abstract translation: 本公开提供了用于管理图像标记装置的专色的方法，系统和装置。 具体地，公开了一种专色控制方法，包括从多个增益矩阵中选择增益矩阵K，选择增益矩阵K以满足与目标专色的呈现相关的性能标准，性能标准包括可接受的专色 与相对于目标颜色的渲染的专色相关联的错误，用于实现可接受的专色误差的可接受的致动器能量以及可用于渲染专色的总调色剂/墨水使用。

公开(公告)号：US20090296109A1

公开(公告)日：2009-12-03

申请号：US12127728

申请日：2008-05-27

Applicant: Martin S. Maltz ,  Alvaro Enrique Gil ,  Lalit Keshav Mestha

Inventor： Martin S. Maltz ,  Alvaro Enrique Gil ,  Lalit Keshav Mestha

IPC: H04N1/60

CPC classification number: H04N1/60 ,  H04N1/603

Abstract: This disclosure provides printer profiling methods, apparatus and systems for determining device and gain matrix values. Specifically, a method is disclosed for generating a multidimensional printer profile look-up table (LUT) for color correction. The method includes generating an initial LUT associating a plurality of colorimetric nodes with respective initial estimates of their respective device dependent color space representations and their respective gain matrix.

Abstract translation: 本公开提供了用于确定装置和增益矩阵值的打印机分析方法，装置和系统。 具体地，公开了一种用于生成用于颜色校正的多维打印机轮廓查找表（LUT）的方法。 该方法包括生成将多个色度节点与其各自的设备相关色空间表示及其各自的增益矩阵的相应初始估计相关联的初始LUT。

公开(公告)号：US07590282B2

公开(公告)日：2009-09-15

申请号：US11314670

申请日：2005-12-21

Applicant: Zhigang Fan ,  Lalit Keshav Mestha ,  Yao Rong Wang ,  Robert P. Loce ,  Yeqing Zhang

Inventor： Zhigang Fan ,  Lalit Keshav Mestha ,  Yao Rong Wang ,  Robert P. Loce ,  Yeqing Zhang

IPC: G06K9/00

CPC classification number: H04N1/4015

Abstract: A method and system for selecting an optimal set of S number of calibration patches for an image producing system. The method of selecting the S number of calibration patches includes acquiring a set of K number of basis eigen vectors and model parameters which represent the image producing system having G number of colors and computing the optimal set of S number of colors selected from the set of G number of colors. Each one of the computed set of S number of colors is used for one of the S number of calibration patches.

Abstract translation: 一种用于为图像产生系统选择S个校准块的最佳集合的方法和系统。 选择S个校准贴片的方法包括获取K个基本特征向量和模型参数的集合，所述基本特征向量和模型参数表示具有G个颜色的图像生成系统，并且计算从该组中选择的S个颜色的最佳集合 G色数。 所计算的S个颜色的组合中的每一个用于S个校准块中的一个。

公开(公告)号：US20090190144A1

公开(公告)日：2009-07-30

申请号：US12019940

申请日：2008-01-25

Applicant: Raja Bala ,  Martin S. Maltz ,  Lalit Keshav Mestha ,  Alvaro Enrique Gil

Inventor： Raja Bala ,  Martin S. Maltz ,  Lalit Keshav Mestha ,  Alvaro Enrique Gil

IPC: G06F15/00

CPC classification number: G06F15/00 ,  H04N1/6058

Abstract: This disclosure provides a method and system to generate device dependent color space representations for an image output device. The method and system are particularly applicable to a printing device, where gamut boundary separated profile methods are executed to map device in-gamut and device out-of-gamut colors.

Abstract translation: 本公开提供了一种用于为图像输出设备生成依赖于设备的色彩空间表示的方法和系统。 该方法和系统特别适用于打印设备，其中执行色域边界分离的轮廓方法来对设备进行色域内和设备色域外的颜色映射。

公开(公告)号：US20090161183A1

公开(公告)日：2009-06-25

申请号：US11961367

申请日：2007-12-20

Applicant: Stuart Alan Schweid ,  Lalit Keshav Mestha ,  Zhigang Fan ,  Alvaro Enrique Gil

Inventor： Stuart Alan Schweid ,  Lalit Keshav Mestha ,  Zhigang Fan ,  Alvaro Enrique Gil

IPC: G03F3/08

CPC classification number: H04N1/6019 ,  G06T11/001

Abstract: A method and system for optimal node placement of a color correction table first generate a high resolution color correction table. A low resolution color correction table is generated. Each node of the low resolution color correction table has a corresponding color correction value generated by interpolating the color correction values of the high resolution color correction table. A reconstructed color correction table is generated, and each of the nodes of the reconstructed color correction table has a corresponding color correction value generated by interpolating the color correction values of the low resolution color correction table using an interpolation method identical to an output device interpolation method. Differences between the color correction values of the reconstructed and the high resolution color correction table are quantified into a measure of error, and the node locations of the low resolution color correction table are adjusted, and the procedure is repeated.

Abstract translation: 用于颜色校正表的最佳节点放置的方法和系统首先生成高分辨率颜色校正表。 生成低分辨率色彩校正表。 低分辨率颜色校正表的每个节点具有通过内插高分辨率颜色校正表的颜色校正值而生成的对应的颜色校正值。 生成重构的颜色校正表，并且重建的颜色校正表的每个节点具有通过使用与输出设备插值方法相同的内插方法内插低分辨率颜色校正表的颜色校正值而生成的对应的颜色校正值 。 将重构和高分辨率色彩校正表的颜色校正值之间的差异量化为误差的量度，并且调整低分辨率颜色校正表的节点位置，并重复该过程。

公开(公告)号：US20090161127A1

公开(公告)日：2009-06-25

申请号：US11961492

申请日：2007-12-20

Applicant: Stuart Alan Schweid ,  Lalit Keshav Mestha

Inventor： Stuart Alan Schweid ,  Lalit Keshav Mestha

IPC: G06K1/00 ,  G09G5/02

CPC classification number: H04N1/6033

Abstract: Disclosed is an image output device color management system. The color management system includes a 2 dimensional principle component analysis (PCA) compensation method for reducing the number of measurement required for re-profiling a device, such as a printer.

Abstract translation: 公开了一种图像输出设备颜色管理系统。 颜色管理系统包括用于减少诸如打印机的设备重新分析所需的测量次数的二维主成分分析（PCA）补偿方法。