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    • 91. 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。
    • 93. 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。
    • 94. 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。
    • 95. 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。
    • 97. 发明申请
    • IDENTIFYING A COLOR SEPARATION WHEREIN A BANDING DEFECT ORIGINATES
    • 识别带有缺陷的颜色分离
    • US20110299099A1
    • 2011-12-08
    • US12796375
    • 2010-06-08
    • Beilei XuWencheng Wu
    • Beilei XuWencheng Wu
    • H04N1/60H04N1/50
    • H04N1/6047H04N1/6036
    • What is disclosed is a novel system and method for banding defect detection in user document images to improve image quality trend analysis in multifunction digital imaging system architectures. The present banding detection process uses region-based, time sequence analysis, and graylevels of image regions in a collection of a sequence of regions, to improve banding detection. The present method independently analyzes the colorant separations to detect banding due to sources that are colorant-dependent, e.g., due to a single developer housing. This identification can be performed in the presence of multiple banding defects.
    • 公开了一种用于在用户文档图像中条带缺陷检测的新型系统和方法,以改善多功能数字成像系统架构中的图像质量趋势分析。 本发明的条带检测过程使用区域,时间序列分析和区域序列集合中的图像区域的灰度级,以改善条带检测。 本方法独立地分析着色剂分离,以检测由于着色剂依赖性的来源而引起的条纹,例如由于单个显影剂外壳。 该识别可以在存在多个条带缺陷的情况下进行。
    • 98. 发明申请
    • MINIMIZING SPECTROPHOTOMETER IMPACT ON SPOT COLOR ACCURACY
    • 最小化分光光度计对点颜色精度的影响
    • US20110096330A1
    • 2011-04-28
    • US12607212
    • 2009-10-28
    • Edul N. DalalWencheng WuAlvaro E. GilPeter A. Crean
    • Edul N. DalalWencheng WuAlvaro E. GilPeter A. Crean
    • G01J3/46
    • G01J3/46G01J3/462G01J3/463H04N1/6033
    • Differences between an offline spectrophotometer and an inline spectrophotometer can result in differences between a hardcopy target color and a printed reproduction of that color. The inline spectrophotometer is inside of a printer and configured to measure printer output. As such, the inline spectrophotometer cannot conveniently measure the hardcopy target color. A printing error or an instrument offset can be determined and passed to a color correction module that updates the device dependent color specification associated with the given spot color. This color specification may be stored, for example, in the printer controller, and used when a document subsequently calls for that spot color, thereby providing accurate color reproduction from that particular printer incorporating that particular inline spectrophotometer.
    • 离线分光光度计和在线分光光度计之间的差异可能导致硬拷贝目标颜色和该颜色的印刷再现之间的差异。 在线分光光度计位于打印机内部,并配置为测量打印机输出。 因此,在线分光光度计不能方便地测量硬拷贝目标颜色。 可以确定打印错误或仪器偏移并将其传递给更新与给定专色相关联的依赖于设备的颜色规格的颜色校正模块。 该颜色规格可以存储在例如打印机控制器中,并且当文档随后调用该专色时使用,从而从包含该特定的在线分光光度计的特定打印机提供准确的颜色再现。
    • 99. 发明授权
    • Fine tuning color dictionaries
    • 微调颜色字典
    • US07933053B2
    • 2011-04-26
    • US11607643
    • 2006-12-01
    • Edul N. DalalWencheng WuRaja Bala
    • Edul N. DalalWencheng WuRaja Bala
    • G03F3/08
    • H04N1/6058H04N1/60
    • A spot color dictionary is fine tuned or updated. Localized color production models are determined for spot colors of interest to be produced by an associated document processing system or printer. Measurements are made of colors of produced spot colors. Optionally, measurements are made of colors of test patches that are based on perturbations from the colors of the spot colors. In determining a model for the production of a target spot color, measurement data related to colors that are closer in color space to a given target color is given a higher weight than is measurement data related to colors that are further in color space from the target color. Accordingly, the model is localized to the region of color space about the target color and therefore, more accurately predicts a colorant recipe for the target color than would interpolation based on a full gamut, or more general model.
    • 专色字典被微调或更新。 确定由相关的文件处理系统或打印机生产的感兴趣的专色的本地化颜色生产模型。 测量产生的专色的颜色。 可选地,测量基于来自专色颜色的扰动的测试贴片的颜色。 在确定用于生产目标专色的模型时,与颜色空间相对于给定目标颜色更接近的颜色的测量数据被给予比与从目标进一步在颜色空间中进一步相关的颜色的测量数据更高的权重 颜色。 因此,该模型被定位于关于目标颜色的颜色空间区域,因此,比基于全色域或更一般的模型的内插更准确地预测目标颜色的着色剂配方。
    • 100. 发明授权
    • Image quality defect detection from image quality database
    • 图像质量缺陷检测图像质量数据库
    • US07382507B2
    • 2008-06-03
    • US10990839
    • 2004-11-17
    • Wencheng Wu
    • Wencheng Wu
    • G03F3/08
    • H04N1/40006H04N1/40
    • A method of detecting image quality defects in the output of an image output device includes the steps of generating a test pattern at a known time, analyzing the test pattern to generate image quality defect records, storing the image quality defect records in memory linked to a time stamp indicating known time when the test pattern was generated, repeating the generating, analyzing and storing steps at a plurality of different known times to generate a database of time stamped image quality defect records, reconstructing isolated defect data from each of a plurality of image quality defect records in the database, constructing cumulative defect data by probabilistic summation of the isolated defect data and analyzing the cumulative defect data using an image quality assessment/analysis engine.
    • 检测图像输出装置的输出中的图像质量缺陷的方法包括以下步骤:在已知时间生成测试图案,分析测试图案以产生图像质量缺陷记录,将图像质量缺陷记录存储在与 指示生成测试图案的已知时间的时间戳,在多个不同的已知时间重复生成,分析和存储步骤以生成时间戳图像质量缺陷记录的数据库,从多个图像中的每一个重建孤立的缺陷数据 数据库中的质量缺陷记录,通过对孤立的缺陷数据的概率求和来构建累积缺陷数据,并使用图像质量评估/分析引擎分析累积缺陷数据。