公开(公告)号：US07755799B2

公开(公告)日：2010-07-13

申请号：US11837688

申请日：2007-08-13

申请人： Peter Paul ,  Sahand Rabbani ,  William J. Nowak

发明人： Peter Paul ,  Sahand Rabbani ,  William J. Nowak

IPC分类号： H04N1/409 ,  H04N1/58 ,  H04N1/29 ,  G03G21/14 ,  G03G15/00

CPC分类号： G06K15/1219 ,  B41J29/393

摘要： A method of correcting periodic banding defects in a printing system is provided. The method comprises: determining a banding profile estimate; determining a compensation profile; adjusting the compensation profile based on the transfer function of a motion system and the transfer function of a printing system; waiting until a defect once-around signal returns; and applying the output of the adjustment step to a controller controlling the speed of an imaging surface.

摘要翻译： 提供了一种在打印系统中校正周期性带状缺陷的方法。 该方法包括：确定条带简档估计; 确定补偿资料; 根据运动系统的传递函数和打印系统的传递功能调整补偿曲线; 等待直到缺陷一次性信号返回; 以及将调节步骤的输出应用于控制成像表面的速度的控制器。

公开(公告)号：US08964256B2

公开(公告)日：2015-02-24

申请号：US12112618

申请日：2008-04-30

申请人： R. Enrique Viturro ,  Peter Paul

发明人： R. Enrique Viturro ,  Peter Paul

IPC分类号： G06T5/00 ,  H04N1/407 ,  H04N1/409 ,  H04N1/401 ,  H04N1/29 ,  G03G15/00 ,  H04N1/12

CPC分类号： H04N1/4015 ,  G03G15/5041 ,  G03G2215/00042 ,  H04N1/12 ,  H04N1/295 ,  H04N1/4076

摘要： Systems and methods are provided for compensating for streak defects in images formed by an image forming device, such as a digital printer. The systems and methods include using both modulation of a raster output scanner (ROS actuation) and spatially varying tone reproduction curve (STRC actuation) in a common control system for improving streak correction. Low spatial frequency large amplitude streak defects are corrected using ROS actuation and high spatial frequency streak defects, as well as any residual low frequency defects, are corrected using STRC actuation.

摘要翻译： 提供了系统和方法来补偿由诸如数字打印机的图像形成装置形成的图像中的条纹缺陷。 该系统和方法包括在公共控制系统中使用光栅输出扫描器（ROS致动）的调制和空间变化色调再现曲线（STRC致动），以改善条纹校正。 使用ROS驱动校正低空间频率大幅度条纹缺陷，并且使用STRC致动校正高空间频率条纹缺陷以及任何残留的低频缺陷。

公开(公告)号：US08791972B2

公开(公告)日：2014-07-29

申请号：US13372460

申请日：2012-02-13

申请人： Martin E. Hoover ,  Peter Paul ,  James D. Shoots ,  Jess R. Gentner

发明人： Martin E. Hoover ,  Peter Paul ,  James D. Shoots ,  Jess R. Gentner

IPC分类号： B41J2/435 ,  G03B27/54 ,  B41L17/08 ,  G02B26/08

CPC分类号： B41L17/08 ,  G02B26/0833 ,  G03G15/04045 ,  G03G15/0435

摘要： A reflex-type digital offset printing system includes four single-pass, single-color digital imaging systems arranged along a print medium feed path, and an image server that utilizes a positional clock to implicitly synchronize the imaging systems with the movement of a print medium along the feed path such that single-color (e.g., black, cyan, magenta, or yellow) image portions can be successively superimposed to produce a full color image. Each single-color digital imaging system utilizes a digital micromirror device and an anamorphic imaging system to generate a high energy, one-dimensional modulated line image that selectively evaporates fountain solution from an imaging cylinder before ink material is applied. Each imaging system utilizes a sensor that sends a respective drum position signal to the image server, and the image server utilizes the drum position signals to synchronize the single-color printing operations with the position of the printing medium.

摘要翻译： 反射型数字胶印系统包括沿打印介质馈送路径布置的四个单通，单色数字成像系统，以及利用位置时钟将成像系统与打印介质的移动隐含地同步的图像服务器 沿着馈送路径，使得可以连续叠加单色（例如，黑色，青色，品红色或黄色）图像部分以产生全色图像。 每个单色数字成像系统利用数字微镜装置和变形成像系统来产生高能量的一维调制线图像，其在施加墨水材料之前选择性地从成像圆筒蒸发润版液。 每个成像系统利用将相应的鼓位置信号发送到图像服务器的传感器，并且图像服务器利用鼓位置信号来使单色打印操作与打印介质的位置同步。

公开(公告)号：US08644561B2

公开(公告)日：2014-02-04

申请号：US13352554

申请日：2012-01-18

申请人： Aaron Michael Burry ,  Vladimir Kozitsky ,  Peter Paul

发明人： Aaron Michael Burry ,  Vladimir Kozitsky ,  Peter Paul

IPC分类号： G06K9/00

CPC分类号： G06K9/6279 ,  G06K2209/01 ,  G06K2209/15

摘要： A method and system for recognizing a license plate character utilizing a machine learning classifier. A license plate image with respect to a vehicle can be captured by an image capturing unit and the license plate image can be segmented into license plate character images. The character image can be preprocessed to remove a local background variation in the image and to define a local feature utilizing a quantization transformation. A classification margin for each character image can be identified utilizing a set of machine learning classifiers each binary in nature, for the character image. Each binary classifier can be trained utilizing a character sample as a positive class and all other characters as well as non-character images as a negative class. The character type associated with the classifier with a largest classification margin can be determined and the OCR result can be declared.

摘要翻译： 一种使用机器学习分类器识别车牌字符的方法和系统。 可以通过图像捕获单元捕获关于车辆的车牌图像，并且可以将车牌图像分割成车牌字符图像。 字符图像可以被预处理以去除图像中的局部背景变化并且使用量化变换来定义局部特征。 可以使用一组机器学习分类器来识别每个字符图像的分类容限，每个二进制的机器学习分类器用于字符图像。 可以使用字符样本作为正类和所有其他字符以及非字符图像作为负类来训练每个二进制分类器。 可以确定与具有最大分类边距的分类器相关联的字符类型，并且可以声明OCR结果。

公开(公告)号：US08553289B2

公开(公告)日：2013-10-08

申请号：US13074267

申请日：2011-03-29

申请人： Palghat S. Ramesh ,  Peter Paul

发明人： Palghat S. Ramesh ,  Peter Paul

IPC分类号： G06K15/00

CPC分类号： B41J2/2135

摘要： A method for compensation of banding in a marking platform includes: initiating a signature learning mode; establishing a timing reference after marking modules have achieved constant velocity; marking a test pattern over multiple intervals of a lowest fundamental frequency among marking modules; obtaining image data for the test pattern from a sensor; and processing the image data in relation to the timing reference to form banding profiles for multiple banding sources. Alternatively, the method may include: initiating a cycle up stage in a phase learning mode; establishing a timing reference after marking modules have achieved constant velocity; marking a test pattern over multiple intervals of a lowest fundamental frequency among marking modules; obtaining banding image data for the test pattern from a sensor; and processing the image data with banding signatures in relation to the timing reference to form phase estimates for each banding signature. Additional embodiments are also provided.

摘要翻译： 一种用于在标记平台中补偿条带的方法包括：启动签名学习模式; 标记模块后建立定时参考值达到恒速; 在标记模块之间的最低基频的多个间隔上标记测试图案; 从传感器获取测试图案的图像数据; 并且相对于定时参考处理图像数据以形成多个条带源的条带简档。 或者，该方法可以包括：在相位学习模式中启动循环向上阶段; 标记模块后建立定时参考值达到恒速; 在标记模块之间的最低基频的多个间隔上标记测试图案; 从传感器获取测试图案的条带图像数据; 并且使用与定时参考相关的条带签名来处理图像数据，以形成每个条带签名的相位估计。 还提供了另外的实施例。

公开(公告)号：US20130204719A1

公开(公告)日：2013-08-08

申请号：US13364768

申请日：2012-02-02

申请人： Aaron Michael Burry ,  Peter Paul ,  Joel Eagle

发明人： Aaron Michael Burry ,  Peter Paul ,  Joel Eagle

IPC分类号： G06Q50/12

CPC分类号： G06Q50/12

摘要： An embodiment generally relates to systems and methods for processing orders associated with an establishment. In particular, a customer can submit a remote order for goods offered by the establishment, along with an associated license plate number of a vehicle that is to pick up the order. An image capture device can capture images of a vehicle on the premises of the establishment, and provide the images to a processing module which use automatic license plate recognition (ALPR) techniques to determine license plate data of the vehicle. The processing module can further examine an order list to determine if the license plate data is associated with an order on the order list, and, if so, add the order to a priority queue.

摘要翻译： 一个实施方案通常涉及用于处理与企业相关联的订单的系统和方法。 特别地，客户可以提交由机构提供的货物的远程订单以及要接收订单的车辆的相关牌照号码。 图像捕获设备可以在建筑物的房屋内捕获车辆的图像，并将图像提供给使用自动车牌识别（ALPR）技术来确定车辆牌照数据的处理模块。 处理模块可以进一步检查订单列表以确定牌照数据是否与订单列表上的订单相关联，如果是，则将订单添加到优先级队列。

公开(公告)号：US08351081B2

公开(公告)日：2013-01-08

申请号：US12839620

申请日：2010-07-20

申请人： Jack Gaynor Elliot ,  Lalit Keshav Mestha ,  Peter Paul ,  David C. Craig ,  Brian Robert Conrow ,  Christine Ann Steurrys

发明人： Jack Gaynor Elliot ,  Lalit Keshav Mestha ,  Peter Paul ,  David C. Craig ,  Brian Robert Conrow ,  Christine Ann Steurrys

IPC分类号： G06F15/00

CPC分类号： H04N1/6033 ,  H04N1/6036

摘要： What is disclosed is a novel system and method for xerographic Dmax control based upon measurements made on the printed paper using an inline spectrophotometer (ILS) or similar device. The disclosed method is based upon directly measuring the color to actuator sensitivity. Each of the separations is controlled independently using an actuator specific to that color separation. The present method is effective at controlling the color of the solid primaries. The fact that the vector of change is highly correlated with solid color variation seen in the field suggests that the teachings hereof effectively increase the solid color stability. Increased solid color stability increases the color stability throughout the printer gamut and the stability of the gamut boundaries, which increases the robustness of gamut mapping algorithms. Advantageously, the present method can be combined with existing ILS-based maintenance architectures.

公开(公告)号：US08264704B2

公开(公告)日：2012-09-11

申请号：US11897212

申请日：2007-08-29

申请人： Mark Sennett Jackson ,  Peter Paul

发明人： Mark Sennett Jackson ,  Peter Paul

IPC分类号： G06K15/00

CPC分类号： H04N1/00002 ,  H04N1/00005 ,  H04N1/00031 ,  H04N1/00045 ,  H04N1/00087 ,  H04N1/00092

摘要： A method of automatically monitoring and controlling print quality in digital printing with a first and second scanner capturing an image from different locations in the printing engine. In an exemplary embodiment, a first scanner captures an image from a surface internal to the print engine while an external scanner captures an image from a printed sheet. If the external print image quality is acceptable, the internally captured image is saved as a reference. The system periodically compares internally captured images with the saved reference and provides automatic image correction if the variation from the reference is within a correctable range. If the image variation is not within a correctable range, the system runs a new test print and creates a new reference image.

摘要翻译： 一种利用第一和第二扫描仪自动监视和控制数字打印中的打印质量的方法，其从打印引擎中的不同位置捕获图像。 在示例性实施例中，当外部扫描仪从打印的纸张捕获图像时，第一扫描仪从打印引擎内部的表面捕获图像。 如果外部打印图像质量可以接受，内部拍摄的图像将被保存为参考。 系统周期性地将内部捕获的图像与保存的参考值进行比较，并且如果参考的变化在可校正的范围内，则可以进行自动图像校正。 如果图像变化不在可校正范围内，系统将运行新的测试打印并创建新的参考图像。

公开(公告)号：US20120148272A1

公开(公告)日：2012-06-14

申请号：US12966211

申请日：2010-12-13

申请人： Palghat S. Ramesh ,  Peter Paul

发明人： Palghat S. Ramesh ,  Peter Paul

IPC分类号： G03G15/02

CPC分类号： G03G15/5058 ,  G03G15/0189 ,  G03G15/5062

摘要： A method for compensation of banding in a marking platform includes: initiating a calibration stage; marking a test pattern over multiple intervals of a lowest fundamental frequency among marking modules; obtaining image data for the test pattern from a sensor; obtaining 1x signals from sensors associated with the marking modules; and processing the image data in relation to the 1x signals to form banding profiles for multiple marking modules. Alternatively, the method may include: processing image data in relation to 1x signals to form banding profiles for multiple marking modules; determining amplitudes in multiple banding profiles exceeds a threshold to identify dominant banding profiles; and processing dominant banding profiles to form dominant banding signatures. Alternatively, the method may include: initiating a correction stage; obtaining 1x signals from sensors associated with dominant marking modules; and periodically processing dominant banding signatures and 1x signals to determine a banding compensation value.

摘要翻译： 用于补偿标记平台中的条带的方法包括：启动校准阶段; 在标记模块之间的最低基频的多个间隔上标记测试图案; 从传感器获取测试图案的图像数据; 从与标记模块相关的传感器获取1x信号; 并处理与1x信号相关的图像数据，以形成多个标记模块的条带轮廓。 或者，该方法可以包括：处理与1x信号相关的图像数据，以形成多个标记模块的条带简档; 确定多个条带轮廓中的幅度超过阈值以识别主要条带轮廓; 并处理主要条带轮廓以形成主要条带签名。 或者，该方法可以包括：启动校正阶段; 从与主要标记模块相关的传感器获取1x信号; 并且周期性地处理主要条带签名和1x信号以确定条带补偿值。

公开(公告)号：US08194262B2

公开(公告)日：2012-06-05

申请号：US11363378

申请日：2006-02-27

申请人： David G. Anderson ,  Peter Paul

发明人： David G. Anderson ,  Peter Paul

IPC分类号： G06K15/00 ,  H04N1/407

CPC分类号： H04N1/4055 ,  G03G15/5062 ,  G03G15/55 ,  G03G2215/00021 ,  H04N1/4015

摘要： A method of printing includes, on an ongoing basis, determining a print defect state of a printing system, selecting a screen which has a halftone print parameter which masks a detected print defect, such as one or more of a screen frequency parameter, a screen angle parameter, and a dot growth parameter. The method further includes printing images according to the selected halftone print parameter. Alternatively, where the printing system includes more than one marking engine, the method includes selecting a marking engine according to the determined defect states of each of the marking engines.

摘要翻译： 打印方法在持续的基础上，确定打印系统的打印缺陷状态，选择具有屏蔽检测到的打印缺陷的半色调打印参数的屏幕，诸如屏幕频率参数，屏幕中的一个或多个 角度参数和点生长参数。 该方法还包括根据所选择的半色调打印参数打印图像。 或者，在打印系统包括多于一个的打标引擎的情况下，该方法包括根据确定的每个标记引擎的缺陷状态选择标记引擎。