公开(公告)号：US07492485B2

公开(公告)日：2009-02-17

申请号：US11253724

申请日：2005-10-20

申请人： Palghat S. Ramesh ,  Peter Paul

发明人： Palghat S. Ramesh ,  Peter Paul

IPC分类号： G06T5/00 ,  H04N1/38 ,  G06K9/40

CPC分类号： G03G15/5062 ,  G03G2215/00042

摘要： A system and method for correcting a defect in an image, such as a ghost defect or a reload defect, by compensating for the defect. A defect model is created with a source target function that represents a source level with respect to a target level. A test output image is created on which the test data is measured. State data representing a state of the imaging device, previously printed images or the current image are inputted to a controller. An image correction factor is outputted from the controller based on the test image measurement data, the state data, the previously printed images, and the current image to the image path actuator. A corrected image is created based on the image correction factor.

摘要翻译： 通过补偿缺陷来校正图像中的缺陷，例如重影缺陷或重新加载缺陷的系统和方法。 创建缺陷模型，其中源目标函数表示相对于目标级别的源级别。 创建测试输出图像，测量测试数据。 表示成像装置的状态的状态数据，先前打印的图像或当前图像被输入到控制器。 基于测试图像测量数据，状态数据，先前打印的图像和当前图像，将图像校正系数从控制器输出到图像路径致动器。 基于图像校正因子创建校正图像。

公开(公告)号：US20070046941A1

公开(公告)日：2007-03-01

申请号：US11210957

申请日：2005-08-24

申请人： Lalit Mestha ,  Tonya Love ,  Peter Paul ,  Claude Fillion

发明人： Lalit Mestha ,  Tonya Love ,  Peter Paul ,  Claude Fillion

IPC分类号： G01J3/46

CPC分类号： G01J3/50 ,  G01J3/02 ,  G01J3/0256 ,  G01J3/0278 ,  G01J3/501 ,  G01J3/524

摘要： Spectrophotometer color measurement with a target illumination system and a reflected illumination sensing system where the target surface is variably spaced from said spectrophotometer. Color correction calibration information corresponding to color measurements for known different spacings of a test target surface from the spectrophotometer are obtained and stored. In use, the spacing of the actual target surface from the spectrophotometer is measured to provide a target spacing information signal. That signal is automatically combined with the stored color correction calibration information for the corresponding distances to provide at least partial correction of color measurement errors of the spectrophotometer for variable spacing of the target surface relative to the spectrophotometer even with low cost fixed focus optics. The spectrophotometer output can be so corrected by changing the target illumination, such as by LED pulse width changes, and/or by corrective adjustment of the measured reflectances.

公开(公告)号：US20060222387A1

公开(公告)日：2006-10-05

申请号：US11094454

申请日：2005-03-31

申请人： Aaron Burry ,  Christopher Dirubio ,  Gerald Fletcher ,  Eric Hamby ,  Martin Krucinski ,  Robert Mead ,  Bruce Parks ,  Peter Paul ,  Palghat Ramesh ,  Eliud Robles Flores ,  Fei Xiao

发明人： Aaron Burry ,  Christopher Dirubio ,  Gerald Fletcher ,  Eric Hamby ,  Martin Krucinski ,  Robert Mead ,  Bruce Parks ,  Peter Paul ,  Palghat Ramesh ,  Eliud Robles Flores ,  Fei Xiao

IPC分类号： G03G15/00

CPC分类号： G03G15/1645 ,  G03G15/5041 ,  G03G2215/00037 ,  G03G2215/00059

摘要： A defect analysis system for a xerographic print engine includes a residual mass sensor that senses the two-dimensional signature structure of residual mass remaining on a photoconductive or other substrate surface after image transfer. Preferably, the sensor is a full width array that spans substantially an entire width of the photoconductive surface. This information is then processed and analyzed to determine a specific type of transfer defect present. This may include the quantified level of defect for each detected type. The defect analysis system may also include a closed-loop control system that can adjust various xerographic process parameters using feedback based on the identification and optionally magnitude of each specific defect type. The identified print quality defect, such as mottle, streaks, point deletions, graininess, etc. can then be used to determine a customized corrective control action to be taken by the feedback control of the xerographic print engine to remedy or compensate for the defect(s).

摘要翻译： 用于静电印刷引擎的缺陷分析系统包括残余质量传感器，其在图像转印之后感测残留在光导或其它基底表面上的残留质量的二维签名结构。 优选地，传感器是基本上跨越光电导表面的整个宽度的全宽阵列。 然后对该信息进行处理和分析，以确定存在的特定类型的转移缺陷。 这可能包括每种检测类型的量化的缺陷水平。 缺陷分析系统还可以包括闭环控制系统，其可以使用基于每个特定缺陷类型的识别和可选大小的反馈来调整各种静电印迹过程参数。 然后可以使用所识别的打印质量缺陷，例如斑驳，条纹，点删除，颗粒度等来确定由静电印刷机的反馈控制采取的定制的校正控制动作来补救或补偿缺陷（ s）。

公开(公告)号：US20060114283A1

公开(公告)日：2006-06-01

申请号：US10998632

申请日：2004-11-30

申请人： Howard Mizes ,  Peter Paul ,  Stanley Wallace ,  Michael Borton ,  Kenneth Ossman

发明人： Howard Mizes ,  Peter Paul ,  Stanley Wallace ,  Michael Borton ,  Kenneth Ossman

IPC分类号： B41J29/393

CPC分类号： B41J2/155

摘要： Systems and methods are provided for detecting process direction registration errors in a printer. The errors are detected by analyzing a metric of a dash minimum response obtained from a test pattern. The test pattern contains dashes. At least one dash is shifted in the process direction in relation to another dash.

公开(公告)号：US09202118B2

公开(公告)日：2015-12-01

申请号：US13324308

申请日：2011-12-13

申请人： Yao Rong Wang ,  Beilei Xu ,  Peter Paul

发明人： Yao Rong Wang ,  Beilei Xu ,  Peter Paul

IPC分类号： G06K9/00

CPC分类号： G06K9/00838 ,  G06K9/00221 ,  G06K9/00362

摘要： What is disclosed is a system and method for determining a pixel classification threshold for vehicle occupancy determination. An IR image of a moving vehicle is captured using a multi-band IR imaging system. A driver's face is detected using a face recognition algorithm. Multi-spectral information extracted from pixels identified as human tissue of the driver's face is used to determine a pixel classification threshold. This threshold is then used to facilitate a classification of pixels of a remainder of the IR image. Once pixels in the remainder of the image have been classified, a determination can be made whether the vehicle contains additional human occupants other than the driver. An authority is alerted in the instance where the vehicle is found to be traveling in a HOV/HOT lane requiring two or more human occupants and a determination has been made that the vehicle contains an insufficient number of human occupants.

摘要翻译： 公开的是用于确定车辆占用确定的像素分类阈值的系统和方法。 使用多频带IR成像系统捕获移动车辆的IR图像。 使用人脸识别算法检测驾驶员的脸部。 使用从识别为驾驶员脸部的人体组织的像素提取的多光谱信息来确定像素分类阈值。 然后使用该阈值来促进红外图像的其余部分的像素的分类。 一旦图像的其余部分中的像素被分类，则可以确定车辆是否包含驾驶员以外的其他人员。 在发现车辆在需要两个或更多人的乘客的HOV / HOT车道中行驶的情况下，警告当局，并且已经确定车辆包含的人数不足。

公开(公告)号：US09019358B2

公开(公告)日：2015-04-28

申请号：US13023310

申请日：2011-02-08

申请人： Lalit Keshav Mestha ,  Beilei Xu ,  Peter Paul

发明人： Lalit Keshav Mestha ,  Beilei Xu ,  Peter Paul

IPC分类号： H04N7/18 ,  G06K9/00

CPC分类号： G06K9/0063 ,  G06K2009/00644

摘要： What is disclosed is a novel system and method for simultaneous spectral decomposition suitable for image object identification and categorization for scenes and objects under analysis. The present system captures different spectral planes simultaneously using a Fabry-Perot multi-filter grid each tuned to a specific wavelength. A method for classifying pixels in the captured image is provided. The present system and method finds its uses in a wide array of applications such as, for example, occupancy detection in a transportation management system and in medical imaging and diagnosis for healthcare management. The teachings hereof further find their uses in other applications where there is a need to capture a two dimensional view of a scene and decompose the scene into its spectral bands such that objects in the image can be appropriately identified.

摘要翻译： 所公开的是一种用于同时频谱分解的新型系统和方法，适用于分析场景和物体的图像对象识别和分类。 本系统使用每个调谐到特定波长的法布里 - 珀罗多滤波器网格同时捕获不同的频谱平面。 提供了一种用于对拍摄图像中的像素进行分类的方法。 本系统和方法在广泛的应用中发现其用途，例如在运输管理系统中的占用检测以及用于医疗管理的医学成像和诊​​断。 其中的教导进一步发现它们在其他应用中的用途，其中需要捕获场景的二维视图并将场景分解为其光谱带，使得可以适当地识别图像中的对象。

公开(公告)号：US08824742B2

公开(公告)日：2014-09-02

申请号：US13527228

申请日：2012-06-19

申请人： Sandra Skaff ,  Beilei Xu ,  Peter Paul ,  Craig Saunders ,  Florent Perronnin

发明人： Sandra Skaff ,  Beilei Xu ,  Peter Paul ,  Craig Saunders ,  Florent Perronnin

IPC分类号： G06K9/00 ,  G06K9/46 ,  G06K9/62

CPC分类号： G06K9/00785 ,  G06K9/00832 ,  G06N99/005

摘要： A system for detecting a vehicle occupancy violation includes an image capture module that acquires an image including a vehicle cabin from a camera positioned to view oncoming traffic. The system includes a violation determination device, which includes a feature extraction module that processes the image pixels for determining an image descriptor. The process is selected from a group consisting of a Successive Mean Quantization Transform; a Scale-Invariant Feature Transform; a Histogram of Gradients; a Bag-of-Visual-Words Representation; a Fisher Vector Representation; and, a combination of the above. The system further includes a classifier that determines a distance that the vehicle image descriptor/representation is positioned in the projected feature space relative to a hyper-plane. The classifier determines whether the distance meets a threshold and classifies the image when the threshold is met. A processor implements the modules. A graphic user interface outputs the classification.

摘要翻译： 用于检测车辆占用违规的系统包括图像捕获模块，其从定位成查看迎面而来的交通的相机获取包括车厢的图像。 该系统包括违规判定装置，其包括处理用于确定图像描述符的图像像素的特征提取模块。 该过程选自连续平均量化变换; 尺度不变特征变换; 梯度直方图; 一个视觉词汇表示; Fisher矢量表示法 以及上述的组合。 该系统还包括分类器，其确定车辆图像描述符/表示相对于超平面位于投影特征空间中的距离。 分类器确定距离是否满足阈值，并在满足阈值时对图像进行分类。 处理器实现模块。 图形用户界面输出分类。

公开(公告)号：US08649566B2

公开(公告)日：2014-02-11

申请号：US12838942

申请日：2010-07-19

申请人： Beilei Xu ,  Wencheng Wu ,  Peter Paul ,  Palghat Ramesh

发明人： Beilei Xu ,  Wencheng Wu ,  Peter Paul ,  Palghat Ramesh

IPC分类号： G06K9/00 ,  G06K9/03 ,  G06K9/20

CPC分类号： H04N1/00002 ,  G06K9/036 ,  H04N1/00018 ,  H04N1/00047 ,  H04N1/00084

摘要： A method for detecting motion quality error of printed documents having text in a printing system includes: printing a document having text lines, each text line comprising a plurality of characters; scanning the printed document to generate a scanned image; detecting positions in a process direction of the printing system of one of text lines and characters in the scanned image; determining position errors in the process direction in the printed document based on the detected positions in the scanned image; determining at least one motion quality defect of the printing system in the process direction based on the determined position errors; and initiating an activity associated with said printing system in response to a motion quality error having been determined. A system for detecting motion quality error of printed documents is also disclosed.

摘要翻译： 一种用于检测在打印系统中具有文本的打印文档的运动质量错误的方法，包括：打印具有文本行的文档，每个文本行包括多个字符; 扫描打印文档以生成扫描图像; 检测所述扫描图像中的文本行和文字之一的所述打印系统的处理方向的位置; 基于扫描图像中检测到的位置确定打印文档中的处理方向上的位置误差; 基于所确定的位置误差，确定所述打印系统在所述处理方向上的至少一个运动质量缺陷; 以及响应于已经确定的运动质量错误，发起与所述打印系统相关联的活动。 还公开了一种用于检测打印文件的运动质量误差的系统。

公开(公告)号：US20130336538A1

公开(公告)日：2013-12-19

申请号：US13527228

申请日：2012-06-19

申请人： Sandra Skaff ,  Beilei Xu ,  Peter Paul ,  Craig Saunders ,  Florent Perronnin

发明人： Sandra Skaff ,  Beilei Xu ,  Peter Paul ,  Craig Saunders ,  Florent Perronnin

IPC分类号： G06K9/62

CPC分类号： G06K9/00785 ,  G06K9/00832 ,  G06N99/005

摘要： A system for detecting a vehicle occupancy violation includes an image capture module that acquires an image including a vehicle cabin from a camera positioned to view oncoming traffic. The system includes a violation determination device, which includes a feature extraction module that processes the image pixels for determining an image descriptor. The process is selected from a group consisting of a Successive Mean Quantization Transform; a Scale-Invariant Feature Transform; a Histogram of Gradients; a Bag-of-Visual-Words Representation; a Fisher Vector Representation; and, a combination of the above. The system further includes a classifier that determines a distance that the vehicle image descriptor/representation is positioned in the projected feature space relative to a hyper-plane. The classifier determines whether the distance meets a threshold and classifies the image when the threshold is met. A processor implements the modules. A graphic user interface outputs the classification.

摘要翻译： 用于检测车辆占用违规的系统包括图像捕获模块，其从定位成查看迎面而来的交通的相机获取包括车厢的图像。 该系统包括违规判定装置，其包括处理用于确定图像描述符的图像像素的特征提取模块。 该过程选自连续平均量化变换; 尺度不变特征变换; 梯度直方图; 一个视觉词汇表示; Fisher矢量表示法 以及上述的组合。 该系统还包括分类器，其确定车辆图像描述符/表示相对于超平面位于投影特征空间中的距离。 分类器确定距离是否满足阈值，并在满足阈值时对图像进行分类。 处理器实现模块。 图形用户界面输出分类。

公开(公告)号：US08542410B2

公开(公告)日：2013-09-24

申请号：US12555287

申请日：2009-09-08

申请人： Palghat Ramesh ,  Peter Paul

发明人： Palghat Ramesh ,  Peter Paul

IPC分类号： H04N1/407 ,  G03G15/00 ,  G03G15/01

CPC分类号： G03G15/5058 ,  G03G15/0131 ,  G03G15/0194 ,  G03G2215/00059 ,  G03G2215/00067 ,  G03G2215/0129 ,  G03G2215/0164

摘要： A method, system, and computer program product for estimating exposure modulation in an image printing system is disclosed. The method includes determining a banding profile for an image printing system by a processor; determining an adjusted exposure modulation profile based on the banding profile using a least squares estimation by the processor; and printing an output based on the adjusted exposure profile.

摘要翻译： 公开了一种用于估计图像打印系统中的曝光调制的方法，系统和计算机程序产品。 该方法包括由处理器确定图像打印系统的条带简档; 使用所述处理器的最小二乘估计，基于所述条带轮廓来确定调整的曝光调制轮廓; 并根据经调整的曝光轮廓打印输出。