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    Photoconductor life through active control of charger settings
    2.
    发明授权
    Photoconductor life through active control of charger settings 有权
    感光鼓寿命通过主动控制充电器设置

    公开(公告)号：US07715742B2

    公开(公告)日：2010-05-11

    申请号：US11644276

    申请日：2006-12-22

    申请人： Aaron Michael Burry ,  Christopher Auguste DiRubio ,  Paul Charles Julien ,  Eric Scott Hamby ,  Palghat Ramesh ,  Michael F. Zona ,  William C. Dean

    发明人： Aaron Michael Burry ,  Christopher Auguste DiRubio ,  Paul Charles Julien ,  Eric Scott Hamby ,  Palghat Ramesh ,  Michael F. Zona ,  William C. Dean

    IPC分类号： G03G15/02 ,  G03G15/00

    CPC分类号： G03G15/55 ,  G03G15/0266 ,  G03G15/5062

    摘要： Xerographic photoreceptor life is improved while maintaining output print quality by adjusting the AC charging actuator of a xerographic machine to a point at which photoconductor life is optimized while maintaining output print quality. Where the actuator is voltage, the actuator is set a predetermined amount above the knee voltage of the photoreceptor surface potential versus peak-to-peak voltage curve, which is determined during operation of the machine. Instead of determining the knee voltage, calibration sheets can be generated for various values of the actuator, the best sheet with the least possible actuator value is selected, and the AC charging actuator is set to the value corresponding to the best sheet. The sheets can be evaluated by a user, or an optical array sensor can be used to scan the sheets so that the controller can compare the sheets to stored criteria to automatically select the best sheet and set the actuator. Alternatively, the optical array sensor can scan calibration images directly from the intermediate transfer belt or other image bearing member, thus eliminating the use of paper for calibration.

    摘要翻译： 通过将静电复印机的AC充电致动器调整到优化光电导体寿命的时间点，同时保持输出打印质量，可以提高静电感光效果，同时保持输出打印质量。 在致动器是电压的情况下，将致动器设置在高于感光体表面电位的拐点电压与在峰值到峰值电压曲线之间的预定量，这是在机器操作期间确定的。 代替确定拐点电压，可以为执行器的各种值生成校准页，选择具有尽可能小的执行器值的最佳板，并将AC充电致动器设置为对应于最佳板的值。 纸张可以由用户评估，或者可以使用光学阵列传感器来扫描纸张，使得控制器可以将纸张与存储的标准进行比较以自动选择最佳纸张并设置致动器。 或者，光学阵列传感器可以直接从中间转印带或其他图像承载部件扫描校准图像，从而消除使用纸进行校准。

    Photoconductor life through active control of charger settings
    3.
    发明申请
    Photoconductor life through active control of charger settings 有权
    感光鼓寿命通过主动控制充电器设置

    公开(公告)号：US20080152371A1

    公开(公告)日：2008-06-26

    申请号：US11644276

    申请日：2006-12-22

    申请人： Aaron Michael Burry ,  Christopher Auguste DiRubio ,  Michael F. Zona ,  Paul Charles Julien ,  Eric Scott Hamby ,  Palghat Ramesh ,  William C. Dean

    发明人： Aaron Michael Burry ,  Christopher Auguste DiRubio ,  Michael F. Zona ,  Paul Charles Julien ,  Eric Scott Hamby ,  Palghat Ramesh ,  William C. Dean

    IPC分类号： G03G15/02

    CPC分类号： G03G15/55 ,  G03G15/0266 ,  G03G15/5062

    摘要： Xerographic photoreceptor life is improved while maintaining output print quality by adjusting the AC charging actuator of a xerographic machine to a point at which photoconductor life is optimized while maintaining output print quality. Where the actuator is voltage, the actuator is set a predetermined amount above the knee voltage of the photoreceptor surface potential versus peak-to-peak voltage curve, which is determined during operation of the machine. Instead of determining the knee voltage, calibration sheets can be generated for various values of the actuator, the best sheet with the least possible actuator value is selected, and the AC charging actuator is set to the value corresponding to the best sheet. The sheets can be evaluated by a user, or an optical array sensor can be used to scan the sheets so that the controller can compare the sheets to stored criteria to automatically select the best sheet and set the actuator. Alternatively, the optical array sensor can scan calibration images directly from the intermediate transfer belt or other image bearing member, thus eliminating the use of paper for calibration.

    摘要翻译： 通过将静电复印机的AC充电致动器调整到优化光电导体寿命的时间点，同时保持输出打印质量，可以提高静电感光效果，同时保持输出打印质量。 在致动器是电压的情况下，将致动器设定在高于感光体表面电位的拐点电压与在峰值到峰值电压曲线之间的预定量，这是在机器操作期间确定的。 代替确定拐点电压，可以为执行器的各种值生成校准页，选择具有尽可能小的执行器值的最佳板，并将AC充电致动器设置为对应于最佳板的值。 纸张可以由用户评估，或者可以使用光学阵列传感器来扫描纸张，使得控制器可以将纸张与存储的标准进行比较以自动选择最佳纸张并设置致动器。 或者，光学阵列传感器可以直接从中间转印带或其他图像承载部件扫描校准图像，从而消除使用纸进行校准。

    Method of using biased charging/transfer roller as in-situ voltmeter and photoreceptor thickness detector and method of adjusting xerographic process with results
    5.
    发明授权
    Method of using biased charging/transfer roller as in-situ voltmeter and photoreceptor thickness detector and method of adjusting xerographic process with results 有权
    使用偏置充电/转印辊作为原位电压表和感光体厚度检测器的方法以及结果调整静电印迹过程的方法

    公开(公告)号：US07747184B2

    公开(公告)日：2010-06-29

    申请号：US11644277

    申请日：2006-12-22

    申请人： Christopher Auguste DiRubio ,  Michael F. Zona ,  Charles Anthony Radulski ,  Aaron Michael Burry ,  Palghat Ramesh

    发明人： Christopher Auguste DiRubio ,  Michael F. Zona ,  Charles Anthony Radulski ,  Aaron Michael Burry ,  Palghat Ramesh

    IPC分类号： G03G15/00

    CPC分类号： G03G15/5037 ,  G03G15/553

    摘要： The dielectric thickness of a photoreceptor is determined in a variety of ways, including using a relationship between threshold voltage and dielectric thickness, using a relationship between dielectric thickness and the difference between biased transfer roller (BTR) voltage and photoreceptor surface potential, using a relationship between dielectric thickness and biased charging roller (BCR) impedance, using a relationship between dielectric thickness and the slope of the DC current vs. voltage curve for the BTR or the BCR, and using a relationship between dielectric thickness and the BTR voltage at zero current. The threshold voltage can be found by using the slope of the BCR DC current vs. voltage curve, measuring photoreceptor surface potential for a plurality of target values below the charging knee to obtain the intercept value, or finding the actual value of the charging knee. A method of using the BCR as an electrodynamic voltmeter is also disclosed.

    摘要翻译： 感光体的电介质厚度以各种方式确定，包括使用阈值电压和电介质厚度之间的关系，使用介电厚度与偏置转印辊（BTR）电压和感光体表面电位之差的关系，使用关系式 介电厚度和偏置充电辊（BCR）阻抗之间的关系，使用电介质厚度与BTR或BCR的直流电流与电压曲线的斜率之间的关系，并使用介电厚度与零电流下的BTR电压之间的关系 。 可以通过使用BCR直流电流对电压曲线的斜率来求出阈值电压，测量在充电膝盖以下的多个目标值的感光体表面电位，以获得截距值，或者找到充电膝盖的实际值。 还公开了使用BCR作为电动电压计的方法。

    License plate character segmentation using likelihood maximization
    8.
    发明授权
    License plate character segmentation using likelihood maximization 有权
    车牌字符分割使用似然最大化

    公开(公告)号：US09014432B2

    公开(公告)日：2015-04-21

    申请号：US13464357

    申请日：2012-05-04

    申请人： Zhigang Fan ,  Yonghui Zhao ,  Aaron Michael Burry ,  Vladimir Kozitsky

    发明人： Zhigang Fan ,  Yonghui Zhao ,  Aaron Michael Burry ,  Vladimir Kozitsky

    IPC分类号： G06K9/00 ,  G06K9/32

    CPC分类号： G06K9/3258 ,  G06K2209/15

    摘要： A method determines a license plate layout configuration. The method includes generating at least one model representing a license plate layout configuration. The generating includes segmenting training images each defining a license plate to extract characters and logos from the training images. The segmenting includes calculating values corresponding to parameters of the license plate and features of the characters and logos. The segmenting includes estimating a likelihood function specified by the features using the values. The likelihood function measures deviations between an observed plate and the model. The method includes storing a layout structure and the distributions for each of the at least one model. The method includes receiving as input an observed image including a plate region. The method includes segmenting the plate region and determining a license plate layout configuration of the observed plate by comparing the segmented plate region to the at least one model.

    摘要翻译： 一种方法确定车牌布局配置。 该方法包括生成表示车牌布局配置的至少一个模型。 生成包括分割训练图像，每个训练图像定义牌照以从训练图像中提取字符和徽标。 分段包括计算与车牌参数对应的值和字符和标志的特征。 分段包括使用这些值估计由特征指定的似然函数。 似然函数测量观察板和模型之间的偏差。 所述方法包括存储所述至少一个模型中的每一个的布局结构和分布。 该方法包括接收包括板区域的观察图像作为输入。 该方法包括通过将分割板区域与至少一个模型进行比较来分割板区域并确定观察板块的牌照布局配置。

    Methods and systems for enhancing the performance of automated license plate recognition applications utilizing multiple results
    9.
    发明授权
    Methods and systems for enhancing the performance of automated license plate recognition applications utilizing multiple results 有权
    利用多个结果提高自动车牌识别应用性能的方法和系统

    公开(公告)号：US08781172B2

    公开(公告)日：2014-07-15

    申请号：US13435875

    申请日：2012-03-30

    申请人： Vladimir Kozitsky ,  Aaron Michael Burry

    发明人： Vladimir Kozitsky ,  Aaron Michael Burry

    IPC分类号： G06K9/00 ,  G08G1/01 ,  H04N7/18 ,  B60Q1/56

    CPC分类号： G06K9/3258 ,  G06K2209/15

    摘要： Methods, systems and processor-readable media for enhancing performance of an automated license plate recognition system utilizing multiple results. Multiple images can be captured as a vehicle passes through an observation zone and each image can be processed utilizing an ALPR unit to obtain a plate code result and associated confidence values. Iterative processing of character level information across an OCR code followed by a higher level error checking based on learned context information can be performed. A string correlation approach can be employed to optimally align the OCR code from multiple images despite noise factors. The OCR confidence and state mask information can then be leveraged to select a character for an output plate code taking into account the ALPR error sources.

    摘要翻译： 用于增强利用多个结果的自动车牌识别系统的性能的方法，系统和处理器可读介质。 当车辆通过观察区域时，可以捕获多个图像，并且可以利用ALPR单元处理每个图像以获得平板码结果和相关的置信度值。 可以执行跨越OCR代码的字符级信息的迭代处理，随后基于学习的上下文信息进行更高级别的错误检查。 可以采用字符串相关方法来最佳地对齐来自多个图像的OCR码，尽管噪声因子。 然后可以利用OCR置信度和状态掩码信息来考虑ALPR误差源来选择输出板码的字符。

    License plate optical character recognition method and system
    10.
    发明授权
    License plate optical character recognition method and system 有权
    车牌光学字符识别方法及系统

    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。