公开(公告)号：US06995866B2

公开(公告)日：2006-02-07

申请号：US09808862

申请日：2001-03-14

Applicant: Xiao-fan Feng ,  Jon Matthew Speigle ,  John Charles Dalrymple ,  James Zhixin Chang

Inventor： Xiao-fan Feng ,  Jon Matthew Speigle ,  John Charles Dalrymple ,  James Zhixin Chang

IPC: G06F15/00 ,  B41J1/00

CPC classification number: H04N1/403 ,  H04N1/62

Abstract: A method for background adjustment. A background lightness level in an original image is estimated. Pixels are then converted to a luminance-chrominance color space. Pixels have lightness levels equal to the background lightness level are mapped to a value corresponding to white as background pixels. Chroma values for the background pixels are compared to a threshold and adjusted as needed, either by adjusting the lightness value or by removing the chrominance values. The luminance-chrominance data is then converted to output space.

Abstract translation: 背景调整方法。 估计原始图像中的背景亮度水平。 然后将像素转换为亮度 - 色度色彩空间。 像素具有等于背景亮度级别的亮度级别被映射到对应于作为背景像素的白色的值。 将背景像素的色度值与阈值进行比较，并根据需要进行调整，方法是调整亮度值或去除色度值。 然后将亮度色度数据转换为输出空间。

公开(公告)号：US07545541B2

公开(公告)日：2009-06-09

申请号：US11134798

申请日：2005-05-20

Applicant: John Charles Dalrymple ,  James Zhixin Chang

Inventor： John Charles Dalrymple ,  James Zhixin Chang

IPC: H04N1/40

CPC classification number: H04N1/6033

Abstract: Systems and methods for utilizing metadata embedded in a color measurement target to uniquely identify the target through color measurement. A color measurement target is used for color calibration, color characterization, color adjustment and/or color correction of a color output device and includes a collection of color patches imaged by the output device, wherein metadata is embedded directly into the color patches of the color measurement target to uniquely identify the target through color measurement. The metadata-bearing patches in the target are used to communicate information through color measurement, and can contribute to the color characterization.

Abstract translation: 用于利用嵌入在颜色测量目标中的元数据以通过颜色测量唯一地识别目标的系统和方法。 颜色测量目标被用于颜色校准，颜色表征，颜色调整和/或颜色输出设备的颜色校正，并且包括由输出设备成像的色标的集合，其中元数据直接嵌入到颜色的色块中 测量目标，通过颜色测量来唯一识别目标。 目标中的元数据承载补丁用于通过颜色测量来传递信息，并且可以有助于颜色表征。

公开(公告)号：US07256912B2

公开(公告)日：2007-08-14

申请号：US10606056

申请日：2003-06-25

Applicant: James Zhixin Chang

Inventor： James Zhixin Chang

IPC: G06F15/00

CPC classification number: G06F15/00 ,  H04N1/6033

Abstract: A method is provided for adaptively generating perceptually uniform printer characterization samples in a three-dimensional (3-D) signal space. The method comprises: generating lines, each including a plurality of samples, in a printer 3-D signal space; printing signal space color targets; measuring the signal space color targets; generating lines with a plurality of perceptually uniform samples; generating polygon shapes in the 3-D signal space from the perceptually uniform sampled lines; calculating addition perceptually uniform sample points associated with each polygon; and, generating a final target in the printer 3-D signal space using the calculated perceptually uniform sample points. In one aspect, generating lines, includes: for each line, generating a metric distance function; creating a plurality of perceptually uniform samples on the function output axis; and, using the inverse of the metric distance function, mapping perceptually uniform samples onto the line.

Abstract translation: 提供一种用于在三维（3-D）信号空间中自适应地生成感知统一的打印机表征样本的方法。 该方法包括：在打印机3-D信号空间中生成各自包括多个样本的线; 打印信号空间颜色目标; 测量信号空间的颜色目标; 生成具有多个感知统一样本的线; 从感知统一的采样线在3-D信号空间中产生多边形形状; 计算与每个多边形相关联的感知统一采样点的加法; 并且使用所计算的感知统一的采样点在打印机3-D信号空间中产生最终目标。 一方面，生成线包括：对于每一行，生成度量距离函数; 在功能输出轴上产生多个感知统一的样本; 并且使用度量距离函数的倒数，将感知统一的样本映射到该行上。

公开(公告)号：US07847974B2

公开(公告)日：2010-12-07

申请号：US10892845

申请日：2004-07-16

Applicant: John Charles Dalrymple ,  James Zhixin Chang

Inventor： John Charles Dalrymple ,  James Zhixin Chang

IPC: G06F15/00

CPC classification number: H04N1/6016

Abstract: Systems and methods for dynamically limiting total colorant coverage in multi-colorant rendering. Two polyhedra are defined: one contains all the colors that exceed the total colorant limit, and another is within the colorant limit that contains the results of the colorant limitation process. Data is received to identify a specified contone color, which is processed to decide whether it is inside one of the polyhedra. If the specified contone color is not within either polyhedra, the specified contone color is used in the rendering process. Alternatively, if the specified contone color is within one of the polyhedra, the value representing the specified contone color is compressed into the second polyhedra volume to obtain a resultant contone color that is used in the rendering process.

Abstract translation: 在多着色剂渲染中动态限制着色剂总重量的系统和方法。 定义了两个多面体：一个包含超过总着色剂极限的所有颜色，另一个包含着色剂界限，其中包含着色剂限制过程的结果。 收到数据以识别指定的连字符颜色，该颜色被处理以决定是否在多面体之一内。 如果指定的连字符颜色不在多面体内，则在渲染过程中将使用指定的连字符颜色。 或者，如果指定的连字符颜色在多面体之一内，则表示指定连续色的颜色的值被压缩到第二多面体体积中，以获得在渲染过程中使用的合成连续色。

公开(公告)号：US20090147329A1

公开(公告)日：2009-06-11

申请号：US11951187

申请日：2007-12-05

Applicant: James Zhixin Chang ,  John Charles Dalrymple

Inventor： James Zhixin Chang ,  John Charles Dalrymple

IPC: H04N1/46

CPC classification number: H04N1/6022

Abstract: A method for designing a black generation transfer curve is described. A table is produced to convert a first signal in a first signal space to a second signal in a second signal space. Color measurement data of a device is obtained. The color measurement data relates to a signal-to-color response of the device. A black generation transfer curve is designed constrained by the color measurement data of the device.

Abstract translation: 描述了一种用于设计黑色传送曲线的方法。 产生一个表，用于将第一信号空间中的第一信号转换成第二信号空间中的第二信号。 获得设备的颜色测量数据。 颜色测量数据与设备的信号对颜色响应有关。 黑色生成传输曲线受设备的颜色测量数据约束。

公开(公告)号：US08400692B2

公开(公告)日：2013-03-19

申请号：US12468267

申请日：2009-05-19

Applicant: John Charles Dalrymple ,  James Zhixin Chang

Inventor： John Charles Dalrymple ,  James Zhixin Chang

IPC: H04N1/46

CPC classification number: H04N1/6033

Abstract: Systems and methods for utilizing metadata embedded in a color measurement target to uniquely identify the target through color measurement. A color measurement target is used for color calibration, color characterization, color adjustment and/or color correction of a color output device and includes a collection of color patches imaged by the output device, wherein metadata is embedded directly into the color patches of the color measurement target to uniquely identify the target through color measurement. The metadata-bearing patches in the target are used to communicate information through color measurement, and can contribute to the color characterization.

公开(公告)号：US08310716B2

公开(公告)日：2012-11-13

申请号：US11951187

申请日：2007-12-05

Applicant: James Zhixin Chang ,  John Charles Dalrymple

Inventor： James Zhixin Chang ,  John Charles Dalrymple

IPC: G06F3/12 ,  G06F15/00

CPC classification number: H04N1/6022

Abstract: A method for designing a black generation transfer curve is described. A table is produced to convert a first signal in a first signal space to a second signal in a second signal space. Color measurement data of a device is obtained. The color measurement data relates to a signal-to-color response of the device. A black generation transfer curve is designed constrained by the color measurement data of the device.

Abstract translation: 描述了一种用于设计黑色传送曲线的方法。 产生一个表，用于将第一信号空间中的第一信号转换成第二信号空间中的第二信号。 获得设备的颜色测量数据。 颜色测量数据与设备的信号对颜色响应有关。 黑色生成传输曲线受设备的颜色测量数据约束。

公开(公告)号：US06987880B2

公开(公告)日：2006-01-17

申请号：US09814585

申请日：2001-03-22

Applicant: John E. Dolan ,  John C. Dalrymple ,  James Zhixin Chang ,  Xiao-fan Feng

Inventor： John E. Dolan ,  John C. Dalrymple ,  James Zhixin Chang ,  Xiao-fan Feng

IPC: G06K9/00 ,  G06K9/48

CPC classification number: G06K9/3283

Abstract: An imaging system includes an imaging sensing device sensing an object having a first background color and a backing in opposing relationship with the object having a second background color which is substantially the same as the first background color. The imaging system determines at least one general bounding region of the object based upon a shadow cast onto backing by the object.

Abstract translation: 成像系统包括感测具有第一背景颜色的对象的成像感测装置和与对象具有与第一背景颜色基本相同的第二背景颜色的对象关系的背景。 成像系统基于被物体背衬上的阴影投影来确定物体的至少一个一般的界限区域。