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21. 发明申请

US20110286014A1 UPDATING AN IMAGE QUALITY METRIC DATABASE TO ACCOUNT FOR PRINTER DRIFT 有权
标题翻译：将图像质量公制数据库更新到打印机缓存的帐户
公开(公告)号：US20110286014A1
公开(公告)日：2011-11-24
申请号：US12781988
申请日：2010-05-18
申请人： Wencheng Wu , Edul N. Dalal
发明人： Wencheng Wu , Edul N. Dalal
IPC分类号： G06F15/00
CPC分类号： H04N1/603 , H04N1/40006
摘要： What is disclosed is a novel system and method for determining a printer metric in terms of image quality (IQ) over a large complex set of conditions based upon measurements taken over a small simple set of conditions while compensating for printer drift. The present system and method effectively utilizes a predictive model that predicts noise measurements of multi-separations from those of single-separation colors and/or a subset of the multi-separations. Because a model is used to comprehend the metric over the entire gamut, the number of patches is reduced. This reduction enables the method to be used within a machine to dynamically characterize the device's image quality metric. Various embodiments have been disclosed.
摘要翻译：所公开的是一种新颖的系统和方法，用于在补偿打印机漂移的基础上，基于在一小组简单的条件下进行的测量，在大的复杂条件集上根据图像质量（IQ）来确定打印机度量。本系统和方法有效地利用预测多分离与单分离颜色和/或多分离子集的噪声测量的预测模型。由于使用模型来了解整个色域中的度量，因此减少了补丁的数量。这种减少使得可以在机器内使用该方法来动态地表征设备的图像质量度量。已经公开了各种实施例。

22. 发明申请

US20110032544A1 Optimal patch code design via device characterization 有权
标题翻译：通过器件表征优化补丁码设计
公开(公告)号：US20110032544A1
公开(公告)日：2011-02-10
申请号：US12462527
申请日：2009-08-05
申请人： Wencheng Wu , Edul N. Dalal
发明人： Wencheng Wu , Edul N. Dalal
IPC分类号： H04N1/60 , G06F3/12
CPC分类号： H04N1/6033
摘要： A method for optimally using color patch codes or color barcodes for transmitting machine-readable information, via device characterization, is disclosed to comprise characterizing a printing device and optionally a sensing device for identifying a number of recognizably spaced printer output colors; deriving a code book, by relating the printer output colors and their corresponding input values to information elements; and using the code book for encoding and decoding the information to be transmitted. The recognizably spaced printer output colors are in terms of a color space relevant to a color patch code or color barcode sensing device, and are related to the corresponding marking device input values.
摘要翻译：公开了一种用于通过设备表征来最佳地使用色块代码或颜色条形码来发送机器可读信息的方法，其包括表征打印装置和可选地用于识别多个可识别间隔的打印机输出颜色的感测装置; 通过将打印机输出颜色及其相应的输入值与信息元素相关联来导出代码簿; 并使用码本对要发送的信息进行编码和解码。可识别间隔的打印机输出颜色是与色块代码或颜色条形码检测装置相关的颜色空间，并且与相应的标记装置输入值有关。

23. 发明申请

US20100189348A1 SPOT COLOR TABLE COMPENSATION 有权
标题翻译： SPOT彩色表补偿
公开(公告)号：US20100189348A1
公开(公告)日：2010-07-29
申请号：US12358806
申请日：2009-01-23
申请人： Edul N. Dalal , Wencheng Wu
发明人： Edul N. Dalal , Wencheng Wu
IPC分类号： G06K9/00
CPC分类号： H04N1/6033 , H04N1/62
摘要： Spot color tables, or spot color emulation colorant recipes are updated using information generated during a first and second process color related system calibration. Rather than separately calibrate, through trial and error, individual spot color emulation colorant recipes, information from the first and second general system calibrations is used to adjust spot color recipes. In one embodiment, processing an existing or initial spot color recipe through both a first system model and a second system model generates a device independent color difference. A colorant difference is then determined by transforming a predicted color difference according to estimated partial derivatives of aspects of the second system model, wherein the partial derivatives relate changes in colorant amounts to changes in parameter values of a machine independent color space.
摘要翻译：使用在第一和第二过程颜色相关系统校准期间生成的信息来更新专色表或专色仿真着色剂配方。通过试验和错误单独校准各个专色仿真着色剂配方，而使用第一次和第二次通用系统校准的信息来调整专色配方。在一个实施例中，通过第一系统模型和第二系统模型来处理现有或初始的专色配方产生独立于设备的色差。然后通过根据第二系统模型的方面的估计偏导数变换预测色差来确定着色剂差异，其中部分导数将着色剂量的变化与机器独立色彩空间的参数值的变化相关联。

24. 发明授权

US07542059B2 Page scheduling for printing architectures 有权
标题翻译：打印架构的页面调度
公开(公告)号：US07542059B2
公开(公告)日：2009-06-02
申请号：US11378046
申请日：2006-03-17
申请人： Charles D. Rizzolo , Edul N. Dalal , Dusan G. Lysy , Dale R. Mashtare , R. Victor Klassen , Wencheng Wu , Nancy B. Goodman
发明人： Charles D. Rizzolo , Edul N. Dalal , Dusan G. Lysy , Dale R. Mashtare , R. Victor Klassen , Wencheng Wu , Nancy B. Goodman
IPC分类号： G03G15/01 , B41J29/38 , G03B27/00 , G06F3/12
CPC分类号： G03G15/238 , G03G2215/0119
摘要： At least sequential current and subsequent sheets of a print job are received in a document processing system. Each sheet includes a front image and a back image. The received sheets are scheduled to be printed with at least one of a first and a second sequence by at least one of a first and a second marking engine based on a comparison of the image content in corresponding selected portions of each front and back image.
摘要翻译：在文档处理系统中接收打印作业的至少连续的当前和后续页。每张纸包括前图像和后图像。基于每个前后图像的对应选择部分中的图像内容的比较，所接收的纸张被安排为由第一和第二标记引擎中的至少一个打印的第一和第二序列中的至少一个。

25. 发明授权

US08649054B2 Color registration strategy for preprinted form 有权
标题翻译：预印表格的颜色注册策略
公开(公告)号：US08649054B2
公开(公告)日：2014-02-11
申请号：US12772657
申请日：2010-05-03
申请人： Wencheng Wu , Edul N. Dalal
发明人： Wencheng Wu , Edul N. Dalal
IPC分类号： G06K1/00 , G06K9/00 , B41J2/385 , G03G15/01
CPC分类号： H04N1/50 , B41J2/2135 , B41J11/46
摘要： A method for performing color registration on template media having template markings thereon comprises sensing the template media using a sensor to obtain first image data; printing a test pattern on the template media; sensing the template media along with the test pattern printed thereon using the sensor to obtain second image data; determining an output image data of the test pattern from the first image data, the second image data, and an estimated image data of the template media with the test pattern printed thereon; determining process direction and cross-process direction misregistrations from the output image data; and adjusting printheads based on the process direction and the cross-process direction misregistrations to provide adjusted color registration on subsequent template media. The estimated image data is representative of light scatter from the test pattern and light absorption by the test pattern.
摘要翻译：用于在其上具有模板标记的模板介质上进行颜色配准的方法包括使用传感器感测模板介质以获得第一图像数据; 在模板媒体上打印测试图案; 使用所述传感器与所述测试图案一起感测所述模板介质以获得第二图像数据; 从所述第一图像数据，所述第二图像数据和所述测试图案上印刷的所述模板介质的估计图像数据确定所述测试图案的输出图像数据; 从输出图像数据确定处理方向和交叉处理方向不对准; 以及基于过程方向和交叉过程方向不对准来调整打印头，以在随后的模板介质上提供调整的颜色配准。估计的图像数据表示来自测试图案的光散射和测试图案的光吸收。

26. 发明申请

US20130343645A1 COLOR MATRIX CODE 有权
标题翻译：颜色矩阵代码
公开(公告)号：US20130343645A1
公开(公告)日：2013-12-26
申请号：US13533459
申请日：2012-06-26
申请人： Edul N. Dalal , Wencheng Wu
发明人： Edul N. Dalal , Wencheng Wu
IPC分类号： G06K9/00
CPC分类号： G06K7/1408 , G06K2019/06225
摘要： When an imaging device receives an image file that includes a color barcode, a processor of the imaging device and/or a remote processor may decode the barcode by identifying informational elements and calibration elements in the barcode. When the calibration elements are detected, one or more color model parameters are determined, and a color model is developed. When an informational element is then detected, a color value is determined for the informational element, the color model is applied using the color model parameters to yield an adjusted color value for the informational element, and the adjusted color value is used to decode the color barcode.
摘要翻译：当成像设备接收到包括彩色条形码的图像文件时，成像设备的处理器和/或远程处理器可以通过识别条形码中的信息元素和校准元件来对条形码进行解码。当检测到校准元件时，确定一个或多个颜色模型参数，并且开发颜色模型。当检测到信息元素时，为信息元素确定颜色值，使用颜色模型参数应用颜色模型以产生用于信息元素的调整颜色值，并且调整后的颜色值用于解码颜色条码。

27. 发明授权

US08531743B2 System and method for detecting missing inkjets in an inkjet printer using image data of printed documents without a priori knowledge of the documents 有权
标题翻译：用于使用印刷文件的图像数据来检测喷墨打印机中缺失的喷墨喷嘴的系统和方法，而没有文件的先验知识
公开(公告)号：US08531743B2
公开(公告)日：2013-09-10
申请号：US12906694
申请日：2010-10-18
申请人： Wencheng Wu , Edul N. Dalal
发明人： Wencheng Wu , Edul N. Dalal
IPC分类号： H04N1/46 , H04N1/60 , B41J29/393 , B41J2/015
CPC分类号： B41J2/2142 , B41J2/2139 , B41J2/2146
摘要： A system and method detect missing inkjets in an inkjet image generating system. The system and method generate digital images of printed documents that do not have test pattern data within them. The digital images are processed to detect light streaks and the positions of the light streaks are correlated to inkjet positions in printheads. Identification of the ink color associated with the correlated inkjet positions are obtained with analysis of color separated images and/or color errors.
摘要翻译：一种系统和方法检测喷墨图像生成系统中的缺失喷墨。该系统和方法生成在其中没有测试图案数据的打印文档的数字图像。处理数字图像以检测光条纹，并且光条纹的位置与打印头中的喷墨位置相关。通过分析颜色分离图像和/或颜色误差来获得与相关喷墨位置相关联的墨水颜色的识别。

28. 发明授权

US08520276B2 Color management for selectable gloss applications 有权
标题翻译：颜色管理可选光泽应用
公开(公告)号：US08520276B2
公开(公告)日：2013-08-27
申请号：US13116233
申请日：2011-05-26
申请人： Edul N. Dalal , Wencheng Wu
发明人： Edul N. Dalal , Wencheng Wu
IPC分类号： H04N1/60
CPC分类号： B41J29/393 , H04N1/00015 , H04N1/00023 , H04N1/00031 , H04N1/00045 , H04N1/00063 , H04N1/00068 , H04N1/00087 , H04N1/0009 , H04N1/6033 , H04N2201/0094 , H04N2201/326
摘要： Methods and systems are disclosed which are capable of efficiently performing color management of a variable gloss color printing system. The methods and systems select at least one set of the linear color values corresponding to the color profile for the printing device (at the nominal gloss condition). The linear color values selected comprise those obtained from color values corresponding to each node of the color profile at the nominal gloss condition. In a colorimetric embodiment, the linear color values can comprise: tristimulus values XYZ; red, green, blue (RGB); or luminance component Y, and two chromatic components C1 and C2 (YCC). In a reflectance embodiment, the linear color values comprise reflectance spectra. This exemplary method adds an offset term to each of the linear color values to produce a corresponding set of modified linear color values, and generates a color profile for the printing device at the desired gloss condition based on the modified linear color values.
摘要翻译：公开了能够有效执行可变光泽彩色打印系统的颜色管理的方法和系统。方法和系统选择与印刷装置的颜色特征对应的至少一组线性颜色值（在标称光泽条件下）。所选择的线性颜色值包括从在标称光泽条件下的颜色轮廓的每个节点对应的颜色值获得的。在比色实施例中，线性颜色值可以包括：三刺激值XYZ; 红，绿，蓝（RGB）; 或亮度分量Y，以及两个彩色分量C1和C2（YCC）。在反射率实施例中，线性颜色值包括反射光谱。该示例性方法将偏移项添加到每个线性颜色值以产生相应的一组修改的线性颜色值，并且基于修改的线性颜色值在期望的光泽条件下为打印装置生成颜色特征。

29. 发明授权

US08488191B2 Color mapping determination for an N-color marking device based upon image spatial noise defects 有权
标题翻译：基于图像空间噪声缺陷的N色标记装置的颜色映射确定
公开(公告)号：US08488191B2
公开(公告)日：2013-07-16
申请号：US12727791
申请日：2010-03-19
申请人： Edul N. Dalal , Wencheng Wu , Martin S. Maltz
发明人： Edul N. Dalal , Wencheng Wu , Martin S. Maltz
IPC分类号： H04N1/60
CPC分类号： H04N1/6022 , H04N1/603
摘要： What is disclosed is a novel system and method for determining color profiles based upon optimizing output image spatial noise. For each of a number of selected output colors, spatial noise values for a set of device-dependent color specifications that produce the selected output color are iteratively determined. The set of device-dependent color specifications is generated by varying a subset of colorants in the device-dependent color specifications while changing the remaining colorants to maintain the selected output color. The iterative process improves the spatial noise value, as determined by a spatial noise model, of the device-dependent color specifications that correspond to the selected output color. When an optimum spatial noise value is found, the device-dependent color specification having that spatial noise value is selected as the mapping for the selected device-independent color specification. Various embodiments are disclosed.
摘要翻译：公开的是基于优化输出图像空间噪声来确定颜色特征的新颖系统和方法。对于多个选择的输出颜色中的每一个，迭代地确定产生所选输出颜色的一组依赖于设备的颜色规范的空间噪声值。通过在改变剩余着色剂以维持所选择的输出颜色的同时改变依赖于设备的颜色规格中的着色剂子集来生成依赖于设备的颜色规格。迭代过程根据空间噪声模型改善与所选输出颜色对应的依赖于设备的颜色规格的空间噪声值。当找到最佳空间噪声值时，选择具有该空间噪声值的依赖于设备的颜色规范作为所选设备无关颜色规范的映射。公开了各种实施例。

30. 发明授权

US08335017B1 Spot color rendering via feedback-based multi-objective optimization 有权
标题翻译：通过基于反馈的多目标优化进行现货显色
公开(公告)号：US08335017B1
公开(公告)日：2012-12-18
申请号：US13167349
申请日：2011-06-23
申请人： Alvaro Enrique Gil , Lalit Keshav Mestha , Wencheng Wu , Edul N. Dalal
发明人： Alvaro Enrique Gil , Lalit Keshav Mestha , Wencheng Wu , Edul N. Dalal
IPC分类号： H04N1/46
CPC分类号： H04N1/622
摘要： What is disclosed is a feedback control based system and method for selecting spot color recipes for improved spot color rendition while simultaneously minimizing a function of image quality attributes formed with states defined as vectors such as L*, a*, b*, mottle, graininess, etc. Color is measured with an in-line spectrophotometer or with a full/partial width array. If the sensor is not available, then a model of the print device is used to optimize the function of image quality attributes. In one example embodiment, a spot color of interest is selected along with a set of image quality attributes to be improved for the spot colors of interest. Set points for process actuators and color recipes of the color marking device are adjusted such that a function of the image quality attributes is minimized when the spot color is rendered on the device. Various workflows are disclosed.
摘要翻译：所公开的是基于反馈控制的系统和方法，用于选择改进的专色再现的专色配方，同时最小化由定义为诸如L *，a *，b *，斑点，颗粒度的矢量形成的图像质量属性的功能等等。使用直列分光光度计或全/部分宽度阵列测量颜色。如果传感器不可用，则使用打印设备的型号来优化图像质量属性的功能。在一个示例性实施例中，选择感兴趣的专色连同一组图像质量属性以便针对感兴趣的专色进行改进。调整颜色标记装置的处理执行器和颜色配置的设定点，使得当在设备上呈现专色时，图像质量属性的功能被最小化。公开了各种工作流程。

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