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    • 93. 发明授权
    • Color management for selectable gloss applications
    • 颜色管理可选光泽应用
    • US08520276B2
    • 2013-08-27
    • US13116233
    • 2011-05-26
    • Edul N. DalalWencheng Wu
    • Edul N. DalalWencheng Wu
    • H04N1/60
    • B41J29/393H04N1/00015H04N1/00023H04N1/00031H04N1/00045H04N1/00063H04N1/00068H04N1/00087H04N1/0009H04N1/6033H04N2201/0094H04N2201/326
    • 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.
    • 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。
    • 94. 发明授权
    • Color mapping determination for an N-color marking device based upon image spatial noise defects
    • 基于图像空间噪声缺陷的N色标记装置的颜色映射确定
    • US08488191B2
    • 2013-07-16
    • US12727791
    • 2010-03-19
    • Edul N. DalalWencheng WuMartin S. Maltz
    • Edul N. DalalWencheng WuMartin S. Maltz
    • H04N1/60
    • H04N1/6022H04N1/603
    • 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.
    • 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。
    • 95. 发明申请
    • UNSUPERVISED PARAMETER SETTINGS FOR OBJECT TRACKING ALGORITHMS
    • 用于对象跟踪算法的不确定参数设置
    • US20130058523A1
    • 2013-03-07
    • US13223420
    • 2011-09-01
    • Wencheng WuBeilei XU
    • Wencheng WuBeilei XU
    • G06K9/00
    • G06K9/00785
    • A method for automatically optimizing a parameter set for a tracking algorithm comprising receiving a series of image frames and processing the image frames using a tracking algorithm with an initialized parameter set. An updated parameter set is then created according to the processed image frames utilizing estimated tracking analytics. The parameters are validated using a performance metric that may be manually or automatically preformed using a GUI. The image frames are collected from a video camera with a fixed set-up at a fixed location. The image frames may include a training traffic video or a training video for tracking humans.
    • 一种用于自动优化用于跟踪算法的参数集的方法,包括:使用具有初始化参数集的跟踪算法来接收一系列图像帧并处理所述图像帧。 然后使用估计的跟踪分析,根据处理的图像帧创建更新的参数集。 使用可以使用GUI手动或自动执行的性能度量来验证参数。 在固定位置固定设置的摄像机收集图像帧。 图像帧可以包括用于跟踪人的训练交通视频或训练视频。
    • 96. 发明授权
    • Spot color rendering via feedback-based multi-objective optimization
    • 通过基于反馈的多目标优化进行现货显色
    • US08335017B1
    • 2012-12-18
    • US13167349
    • 2011-06-23
    • Alvaro Enrique GilLalit Keshav MesthaWencheng WuEdul N. Dalal
    • Alvaro Enrique GilLalit Keshav MesthaWencheng WuEdul N. Dalal
    • H04N1/46
    • H04N1/622
    • 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.
    • 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。
    • 97. 发明申请
    • INVISIBLE COMPOSITE SECURITY ELEMENT
    • 不可思议的复合安全元素
    • US20120251715A1
    • 2012-10-04
    • US13074610
    • 2011-03-29
    • Edul N. DALALWencheng Wu
    • Edul N. DALALWencheng Wu
    • B05D5/06B05D5/00B42D15/00
    • B42D25/378B41M3/142B41M3/146B42D25/00B42D25/21B42D25/29B42D25/382B42D25/387B42D2033/20B42D2035/50
    • Disclosed is a composite security element and a method for applying the same to a substrate (e.g., paper). The composite security element has a first pattern mark and a second pattern mark. The first pattern mark is marked in first (active) marking material (e.g., ink) and the second pattern mark is marked in second (passive) marking material. When exposed to light or radiation at wavelengths in the visible spectrum, the first and second pattern marks are indistinguishable from one another (to a naked human eye). When exposed to radiation at at least some wavelengths outside of the visible spectrum, the first and second pattern marks are distinguishable from one another (e.g., first pattern reacts to non-visible light). The first pattern mark may be a security mark or symbol, for example. The marking materials may be colorless. Both first and second pattern marks are also associated with similar gloss.
    • 公开了一种复合安全元件及其应用于基板(例如纸)的方法。 复合安全元件具有第一图案标记和第二图案标记。 第一图案标记在第一(活动)标记材料(例如墨水)中被标记,并且第二图案标记被标记在第二(被动)标记材料中。 当暴露于可见光谱波长的光或辐射时,第一和第二图案标记彼此不可区分(对于裸眼)。 当暴露在可见光谱外的至少一些波长处的辐射下时,第一和第二图案标记可彼此区分(例如,第一图案与不可见光反应)。 例如,第一模式标记可以是安全标记或符号。 标记材料可以是无色的。 第一和第二图案标记也与相似的光泽相关联。
    • 98. 发明授权
    • Spatially based transformation of spot colors
    • 专色空间转换专色
    • US08204303B2
    • 2012-06-19
    • US12437660
    • 2009-05-08
    • Edul N. DalalPatrick R. HarringtonWencheng Wu
    • Edul N. DalalPatrick R. HarringtonWencheng Wu
    • G06K9/00G06K1/00G06F15/00
    • H04N1/54H04N1/4015H04N1/6033
    • Colorant recipes for spot colors, or colors associated with vector graphic objects, are transformed to compensate for spatial variation in a rendering device. Inverted Jacobians of color production performance can be used to transform color deviations into colorant recipe changes. The colorant recipe changes are applied to original colorant recipes to provide the transformed colorant recipes. Jacobians can be determined by exercising a system model according to perturbations of the colorant recipes. Alternatively, test patches or strips based on perturbed original colorant recipes can be rendered and measured and the Jacobians can be based on such measurements. Alternatively, spatially dependent tone reproduction curves can be used to transform the colorant recipes associated with the vector graphic objects. Image processing systems can include a spatial variation information determiner, a spatial compensation information determiner and a colorant recipe transformer.
    • 用于专色的颜色配方或与矢量图形对象相关联的颜色进行变换,以补偿渲染设备中的空间变化。 反色Jacobians的色彩生产性能可用于将颜色偏差转化为色素配方更改。 着色剂配方变化适用于原始着色剂配方以提供转化的着色剂配方。 Jacobians可以通过根据着色剂配方的扰动行使系统模型来确定。 或者,可以渲染和测量基于干扰的原始着色剂配方的测试贴片或条纹,并且Jacobians可以基于这样的测量。 或者,空间依赖色调再现曲线可用于变换与矢量图形对象相关联的着色剂配方。 图像处理系统可以包括空间变化信息确定器,空间补偿信息确定器和着色剂配方变换器。
    • 99. 发明授权
    • Identification of faulty jets via sensing on customer images
    • 通过感应客户图像识别故障喷气机
    • US08126199B2
    • 2012-02-28
    • US12474711
    • 2009-05-29
    • Wencheng WuBeilei Xu
    • Wencheng WuBeilei Xu
    • G06K9/00B41J2/205
    • B41J2/2142
    • Systems and methods monitor jets in a color imaging device to identify and correct faulty jets without interrupting a print job. The relationship between the output of the imaging device and the sensor values of a sensor is characterized in a correspondence table. Thereafter, an image produced by the imaging device is measured by the sensor at multiple locations for a group of jets including jets each corresponding a different color of the imaging device color space. The measured output at each of the multiple locations is compared with two or more sets of predicted sensor outputs generated from the color coordinates used to produce the image at the corresponding location and the correspondence table, the set of predicted sensor outputs including at least one predicted sensor output generated with at least one jet set as faulty. At least one jet is determined as operating properly or being faulty based on a comparison of the sets of predicted sensor outputs and the corresponding measured outputs for the multiple locations.
    • 系统和方法监测彩色成像设备中的喷气机,以识别和纠正故障喷气式飞机,而不会中断打印作业。 成像装置的输出与传感器的传感器值之间的关系在对应表中表征。 此后,通过传感器在多个位置处测量由成像装置产生的图像,用于一组射流,包括每个对应于成像装置颜色空间的不同颜色的射流。 将多个位置中的每一个处的测量输出与从用于在相应位置产生图像的颜色坐标和对应表生成的两组或更多组预测传感器输出进行比较,所述预测传感器输出集合包括至少一个预测的 传感器输出产生的至少一个喷气机组有故障。 基于对多个位置的预测的传感器输出和对应的测量输出的比较,确定至少一个射流正确地操作或者是有故障的。
    • 100. 发明授权
    • Automated image quality diagnostics system
    • 自动图像质量诊断系统
    • US08120816B2
    • 2012-02-21
    • US11170638
    • 2005-06-30
    • Wencheng WuMeera Sampath
    • Wencheng WuMeera Sampath
    • G06K9/00
    • H04N1/00015G06K9/036H04N1/00002H04N1/00031H04N1/00045H04N1/00053H04N1/00063H04N1/00076H04N1/00079
    • A system for activating automated image quality diagnostic systems via a direct communication from the image-based control system is disclosed. The system includes a printing engine configured to intake electronic image input and to output tangible image output based on the electronic image input, an image-based measurement system configured to make measurements of image parameters associated with the tangible image output, and an automated compensation system configured to store nominal value parametric measurements for one or more image parameters measured by the image-based measurement system and to compare the nominal value measurements to related one or more parameters measured to determine anomalies in the output tangible image system.
    • 公开了一种通过基于图像的控制系统的直接通信激活自动图像质量诊断系统的系统。 该系统包括配置成摄取电子图像输入并基于电子图像输入输出有形图像输出的打印引擎,配置为对与有形图像输出相关联的图像参数进行测量的基于图像的测量系统,以及自动补偿系统 被配置为存储用于由基于图像的测量系统测量的一个或多个图像参数的标称值参数测量值,并将标称值测量值与测量的相关一个或多个参数进行比较,以确定输出有形图像系统中的异常。