公开(公告)号：US08150106B2

公开(公告)日：2012-04-03

申请号：US12112293

申请日：2008-04-30

Applicant: Wencheng Wu ,  Rajinderjeet Minhas ,  Meera Sampath

Inventor： Wencheng Wu ,  Rajinderjeet Minhas ,  Meera Sampath

IPC: G06K9/00 ,  H04N1/46

CPC classification number: G03G15/5062 ,  B41J29/393 ,  G03G15/0848 ,  G03G2215/00569 ,  G06K9/036 ,  G06K15/02 ,  G06K15/027 ,  H04N1/6033 ,  H04N1/6047

Abstract: A method for automated image quality based diagnosis of a document printing system is disclosed. The method comprises receiving image data to be printed on a document; printing an image on the document based on the image data; scanning the printed image on the document with a sensor; analyzing the scanned printed image with an image quality analysis module to identify one or more defects in the printed image; automatically generating test pattern image data based on the one or more identified defects; and printing and analyzing a test pattern image based on the test pattern image data.

Abstract translation: 公开了一种用于文档打印系统的基于图像质量的自动化诊断的方法。 该方法包括接收要打印在文档上的图像数据; 基于图像数据在文档上打印图像; 用传感器扫描文件上的打印图像; 用图像质量分析模块分析扫描的打印图像以识别打印图像中的一个或多个缺陷; 基于所述一个或多个所识别的缺陷自动生成测试图案图像数据; 并且基于测试图案图像数据打印和分析测试图案图像。

公开(公告)号：US08208183B2

公开(公告)日：2012-06-26

申请号：US12273643

申请日：2008-11-19

Applicant: Wencheng Wu ,  Edul N. Dalal ,  Rajinderjeet Minhas

Inventor： Wencheng Wu ,  Edul N. Dalal ,  Rajinderjeet Minhas

IPC: H04N1/46

CPC classification number: G03G15/0152 ,  G03G15/0163 ,  G03G15/5041 ,  G03G2215/00037 ,  G03G2215/00063 ,  G03G2215/0158 ,  G03G2215/0167 ,  G03G2215/0187 ,  G06T7/001 ,  G06T2207/30144

Abstract: Systems and methods for implementing use of customer documents in maintaining image quality or image quality consistency of printing devices are provided. The system may include a marking engine constructed to print images on an image bearing surface of the print device; one or more color measuring devices for measured toner images formed on the image bearing surface corresponding to the one or more relevant pages, and an image analyzer configured to generate reference images and to compare measured image data with the reference images. The image analyzer may also be configured to analyze input image data for a document and to identify one or more relevant pages of the document that may provide information regarding the state of the printing system to generated reference image data. Comparisons between the color separations of the reference image data and measured image data images may be realized for determining defects.

Abstract translation: 提供了在维护打印设备的图像质量或图像质量一致性中实现客户文档的使用的系统和方法。 所述系统可以包括构造成在所述打印装置的图像承载表面上打印图像的标记引擎; 一个或多个用于测量的调色剂图像的颜色测量装置，其形成在与所述一个或多个相关页面对应的图像承载表面上;以及图像分析器，被配置为产生参考图像并且将测量的图像数据与参考图像进行比较。 图像分析器还可以被配置为分析用于文档的输入图像数据并且识别文档的一个或多个相关页面，其可以提供关于打印系统的状态的信息以产生参考图像数据。 可以实现参考图像数据和测量图像数据图像的分色之间的比较以确定缺陷。

公开(公告)号：US08120816B2

公开(公告)日：2012-02-21

申请号：US11170638

申请日：2005-06-30

Applicant: Wencheng Wu ,  Meera Sampath

Inventor： Wencheng Wu ,  Meera Sampath

IPC: G06K9/00

CPC classification number: H04N1/00015 ,  G06K9/036 ,  H04N1/00002 ,  H04N1/00031 ,  H04N1/00045 ,  H04N1/00053 ,  H04N1/00063 ,  H04N1/00076 ,  H04N1/00079

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20070003109A1

公开(公告)日：2007-01-04

申请号：US11170638

申请日：2005-06-30

Applicant: Wencheng Wu ,  Meera Sampath

Inventor： Wencheng Wu ,  Meera Sampath

IPC: G06K9/00

CPC classification number: H04N1/00015 ,  G06K9/036 ,  H04N1/00002 ,  H04N1/00031 ,  H04N1/00045 ,  H04N1/00053 ,  H04N1/00063 ,  H04N1/00076 ,  H04N1/00079

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US10713499B2

公开(公告)日：2020-07-14

申请号：US13453089

申请日：2012-04-23

Applicant: Wencheng Wu

Inventor： Wencheng Wu

IPC: G06K9/00 ,  G06K9/20 ,  G06K9/32 ,  H04N7/18

Abstract: A method and system for real-time video triggering for traffic surveillance and photo enforcement comprises receiving a streaming video feed and performing a spatial uniformity correction on each frame of the streaming video feed and resampling the video feed to a lower spatial resolution. Motion blobs are then detected. Next a three-layered approach is used to identify candidate motion blobs which can be output to a triggering module to trigger a video collection action.

公开(公告)号：US09060164B2

公开(公告)日：2015-06-16

申请号：US13610907

申请日：2012-09-12

Applicant: Wencheng Wu ,  Edul N. Dalal

Inventor： Wencheng Wu ,  Edul N. Dalal

IPC: H04N17/00 ,  G08G1/04

CPC classification number: H04N17/002 ,  G08G1/04

Abstract: A method for determining a response to misalignment of a camera monitoring a desired area includes acquiring temporal related frames from the camera including a reference frame. A pixel location is determined of a reference object from the frames. Using the pixel location of the reference object, a displacement of the camera between a current frame and the reference frame is determined. For the displacement exceeding a first threshold, a new displacement of the camera is measured by introducing at least one additional object to a camera field of view and comparing the new displacement to a second threshold. For the new displacement not exceeding the second threshold, the camera is recalibrated using a determined pixel location and a physical location of the at least one additional object. For the new displacement exceeding the second threshold, notification is provided of a misalignment to an associated user device.

Abstract translation: 用于确定对监视所需区域的相机的未对准的响应的方法包括从摄像机获取包括参考帧的时间相关帧。 从帧中确定参考对象的像素位置。 使用参考对象的像素位置，确定相机在当前帧与参考帧之间的位移。 对于超过第一阈值的位移，通过将至少一个附加对象引入照相机视野并将新位移与第二阈值进行比较来测量照相机的新位移。 对于不超过第二阈值的新位移，使用确定的像素位置和至少一个附加对象的物理位置来重新校准照相机。 对于超过第二阈值的新位移，向相关联的用户设备通知未对准。

公开(公告)号：US09025024B2

公开(公告)日：2015-05-05

申请号：US13247343

申请日：2011-09-28

Applicant: Beilei Xu ,  Wencheng Wu ,  Lalit Keshav Mestha ,  Graham Pennington

Inventor： Beilei Xu ,  Wencheng Wu ,  Lalit Keshav Mestha ,  Graham Pennington

IPC: H04N7/18 ,  G06K9/20 ,  H04N5/232 ,  H04N5/33

CPC classification number: G06K9/2018 ,  H04N5/23206 ,  H04N5/23219 ,  H04N5/332

Abstract: What is disclosed is a system and method for identifying materials comprising an object captured in a video and for using the identified materials to track that object as it moves across the captured video scene. In one embodiment, a multi-spectral or hyper-spectral sensor is used to capture a spectral image of an object in an area of interest. Pixels in the spectral planes of the spectral images are analyzed to identify a material comprising objects in that area of interest. A location of each of the identified objects is provided to an imaging sensor which then proceeds to track the objects as they move through a scene. Various embodiments are disclosed.

Abstract translation: 公开的是用于识别包括在视频中捕获的对象的材料的系统和方法，并且用于当所述对象在所捕获的视频场景中移动时使用所识别的材料来跟踪该对象。 在一个实施例中，使用多光谱或超光谱传感器来捕获感兴趣区域中的对象的光谱图像。 分析光谱图像的光谱平面中的像素以识别包含该感兴趣区域中的物体的材料。 每个识别的对象的位置被提供给成像传感器，然后成像传感器在它们移动通过场景时跟踪对象。 公开了各种实施例。

公开(公告)号：US08861023B2

公开(公告)日：2014-10-14

申请号：US13023822

申请日：2011-02-09

Applicant: Edul N. Dalal ,  Wencheng Wu ,  Robert J. Rolleston

Inventor： Edul N. Dalal ,  Wencheng Wu ,  Robert J. Rolleston

IPC: H04N1/60 ,  H04N1/54 ,  H04N1/62

CPC classification number: H04N1/54 ,  H04N1/603 ,  H04N1/628

Abstract: What is disclosed is a novel system and method for determining and capturing the designer intended colors in an image so that the printer has an accurate color rendition target. The present method operates by capturing the monitor RGB values together with the monitor profile to get a representation of the intended image in a device-independent color space like L*a*b*. The teachings hereof work for vector graphics as well as raster images. Advantageously, this invention solves a real problem currently existing, for example, in the packaging print market, wherein colors produced from multiple spot colors with their overlays and blends are not well color managed.

Abstract translation: 公开的是用于确定和捕获图像中的设计者预期颜色的新型系统和方法，使得打印机具有准确的色彩再现目标。 本方法通过将监视器RGB值与监视器配置文件一起捕获来操作，以在与设备无关的颜色空间（如L * a * b *）中获得所需图像的表示。 这里的教学工作用于矢量图形以及光栅图像。 有利地，本发明解决了例如在包装印刷市场中存在的真实问题，其中由具有它们的覆盖物和共混物的多种专色产生的颜色不是很好的颜色管理。

公开(公告)号：US08855436B2

公开(公告)日：2014-10-07

申请号：US13277719

申请日：2011-10-20

Applicant: Orhan Bulan ,  Edgar A. Bernal ,  Robert P. Loce ,  Wencheng Wu

Inventor： Orhan Bulan ,  Edgar A. Bernal ,  Robert P. Loce ,  Wencheng Wu

IPC: G06K9/36 ,  G06K9/46 ,  H04N19/107 ,  H04N19/172 ,  H04N19/139

CPC classification number: G08G1/0133 ,  G06K9/00785 ,  H04N19/107 ,  H04N19/139 ,  H04N19/172 ,  H04N19/513 ,  H04N19/61

Abstract: A method of, and system for, selective video frame compression and decompression is presented. The disclosed technique is particularly suited for efficient event-driven searching in large databases. The technique involves designating certain frames in a video sequence as reference frames, to be compressed using a first compression technique, where the remaining frames are compressed using a second compression technique. The first compression technique may be implemented without requiring data from any neighboring frames.

Abstract translation: 提出了选择性视频帧压缩和解压缩的方法和系统。 所公开的技术特别适用于在大数据库中有效的事件驱动搜索。 该技术涉及将视频序列中的某些帧指定为参考帧，以使用第一压缩技术进行压缩，其中使用第二压缩技术来压缩剩余的帧。 可以实现第一压缩技术，而不需要来自任何相邻帧的数据。

公开(公告)号：US08797589B2

公开(公告)日：2014-08-05

申请号：US12859760

申请日：2010-08-19

Applicant: Edul N. Dalal ,  Wencheng Wu

Inventor： Edul N. Dalal ,  Wencheng Wu

IPC: G06K15/00 ,  G06F15/00 ,  H04N1/407 ,  H04N1/46 ,  G03F3/08

CPC classification number: H04N1/6033 ,  G01J3/462

Abstract: A computer-implemented method for color calibration and profiling of an output device includes measuring a color patch in a test pattern, which comprises a plurality of color patches, to obtain first image data; measuring the color patch in the test pattern to obtain second image data; transforming the first image data to a first estimated image data; determining a difference between the second image data and the first estimated image data to obtain a correction factor; and calculating, for each patch in the test pattern, a corrected image data by applying the correction factor to a subsequent estimated image data from the first sensor. The correction factor is used for correcting inaccuracies introduced when the first image data is transformed into the first estimated image data. The first image data and the second image data provide a measured color representation of the color patch in a device dependent color space and a device independent color space, respectively.

Abstract translation: 用于颜色校准和输出设备的轮廓的计算机实现的方法包括测量包括多个色块的测试图案中的色块以获得第一图像数据; 测量测试图案中的色块以获得第二图像数据; 将所述第一图像数据变换为第一估计图像数据; 确定第二图像数据和第一估计图像数据之间的差以获得校正因子; 以及通过将所述校正因子应用于来自所述第一传感器的后续估计图像数据来计算所述测试图案中的每个贴片的校正图像数据。 校正因子用于校正当第一图像数据被变换为第一估计图像数据时引入的不精确度。 第一图像数据和第二图像数据分别在设备依赖的颜色空间和设备独立的颜色空间中分别提供色标的测量的颜色表示。