公开(公告)号：US08649054B2

公开(公告)日：2014-02-11

申请号：US12772657

申请日：2010-05-03

申请人： Wencheng Wu ,  Edul N. Dalal

发明人： Wencheng Wu ,  Edul N. Dalal

IPC分类号： G06K1/00 ,  G06K9/00 ,  B41J2/385 ,  G03G15/01

CPC分类号： H04N1/50 ,  B41J2/2135 ,  B41J11/46

摘要： A method for performing color registration on template media having template markings thereon comprises sensing the template media using a sensor to obtain first image data; printing a test pattern on the template media; sensing the template media along with the test pattern printed thereon using the sensor to obtain second image data; determining an output image data of the test pattern from the first image data, the second image data, and an estimated image data of the template media with the test pattern printed thereon; determining process direction and cross-process direction misregistrations from the output image data; and adjusting printheads based on the process direction and the cross-process direction misregistrations to provide adjusted color registration on subsequent template media. The estimated image data is representative of light scatter from the test pattern and light absorption by the test pattern.

摘要翻译： 用于在其上具有模板标记的模板介质上进行颜色配准的方法包括使用传感器感测模板介质以获得第一图像数据; 在模板媒体上打印测试图案; 使用所述传感器与所述测试图案一起感测所述模板介质以获得第二图像数据; 从所述第一图像数据，所述第二图像数据和所述测试图案上印刷的所述模板介质的估计图像数据确定所述测试图案的输出图像数据; 从输出图像数据确定处理方向和交叉处理方向不对准; 以及基于过程方向和交叉过程方向不对准来调整打印头，以在随后的模板介质上提供调整的颜色配准。 估计的图像数据表示来自测试图案的光散射和测试图案的光吸收。

公开(公告)号：US20130343645A1

公开(公告)日：2013-12-26

申请号：US13533459

申请日：2012-06-26

申请人： Edul N. Dalal ,  Wencheng Wu

发明人： Edul N. Dalal ,  Wencheng Wu

IPC分类号： G06K9/00

CPC分类号： G06K7/1408 ,  G06K2019/06225

摘要： When an imaging device receives an image file that includes a color barcode, a processor of the imaging device and/or a remote processor may decode the barcode by identifying informational elements and calibration elements in the barcode. When the calibration elements are detected, one or more color model parameters are determined, and a color model is developed. When an informational element is then detected, a color value is determined for the informational element, the color model is applied using the color model parameters to yield an adjusted color value for the informational element, and the adjusted color value is used to decode the color barcode.

摘要翻译： 当成像设备接收到包括彩色条形码的图像文件时，成像设备的处理器和/或远程处理器可以通过识别条形码中的信息元素和校准元件来对条形码进行解码。 当检测到校准元件时，确定一个或多个颜色模型参数，并且开发颜色模型。 当检测到信息元素时，为信息元素确定颜色值，使用颜色模型参数应用颜色模型以产生用于信息元素的调整颜色值，并且调整后的颜色值用于解码颜色 条码。

公开(公告)号：US20130258107A1

公开(公告)日：2013-10-03

申请号：US13433809

申请日：2012-03-29

申请人： Diana L. Delibaltov ,  Wencheng Wu ,  Robert P. Loce ,  Edgar Bernal

发明人： Diana L. Delibaltov ,  Wencheng Wu ,  Robert P. Loce ,  Edgar Bernal

IPC分类号： G08G1/14 ,  H04N7/18

CPC分类号： G08G1/04 ,  G06K9/00785 ,  G06K9/00812 ,  G06K9/6269 ,  G06K2009/4666 ,  G08G1/065

摘要： Described herein is a method of determining parking lot occupancy from digital images, including a set-up procedure that includes receiving a layout of a parking lot and estimating parking space volume for at least one viewing angle and the probability that an observed pixel belongs to the parking space volume. The method further includes acquiring one or more image frames of the parking lot from at least one digital camera; performing pixel classification using a vehicle detector on the acquired image frames to determine a likelihood that a pixel belongs to a vehicle; computing a probability that a parking space is occupied by a vehicle based on a spatially varying membership probability density function and a likelihood of vehicle pixels within a region of interest; and determining parking lot vacancy via a comparison of the computed probability that a parking space is occupied by a vehicle to a pre-determined threshold.

摘要翻译： 这里描述了一种从数字图像中确定停车场占用的方法，包括建立过程，其包括接收停车场的布局并估计至少一个视角的停车空间体积，以及观察像素属于 停车位容积。 该方法还包括从至少一个数字照相机获取停车场的一个或多个图像帧; 使用车辆检测器对所获取的图像帧执行像素分类，以确定像素属于车辆的可能性; 基于空间变化的隶属概率密度函数和感兴趣区域内的车辆像素的可能性来计算车辆占据的概率; 以及通过将所述计算出的停车位被车辆占据的概率与预定阈值进行比较来确定停车场空置。

公开(公告)号：US20130236063A1

公开(公告)日：2013-09-12

申请号：US13414167

申请日：2012-03-07

申请人： Helen HaeKyung Shin ,  Robert P. Lee ,  Wencheng Wu ,  Thomas F. Wade ,  Peter Paul ,  Edgar Bernal

发明人： Helen HaeKyung Shin ,  Robert P. Lee ,  Wencheng Wu ,  Thomas F. Wade ,  Peter Paul ,  Edgar Bernal

IPC分类号： G06K9/78 ,  G06K9/00

CPC分类号： G08G1/04 ,  G08G1/017

摘要： A camera may be positioned to have a direct view of on-coming vehicle traffic from a first perspective. Additionally, a reflective surface, such as a mirror, may be positioned within the viewing area of the same camera to provide the camera with a reflected view of vehicle traffic from a second perspective. The images recorded by the camera may then be received by a computing device. The computing device may separate the images into a direct view region and a reflected view region. After separation, the regions may be analyzed independently and/or combined with other regions, and the analyzed data may be stored. The regions may be analyzed to determine various vehicle characteristics, including, but not limited to, vehicle speed, license plate identification, vehicle occupancy, vehicle count, and vehicle type.

摘要翻译： 照相机可以从第一角度定位成直接观看即将到来的车辆交通。 此外，诸如反射镜的反射表面可以被定位在同一照相机的观看区域内，以从第二角度向相机提供车辆交通的反射视图。 然后可以由计算设备接收由相机记录的图像。 计算设备可以将图像分离成直视区域和反射视区。 分离后，可以独立地和/或与其它区域组合分析区域，并且可以存储分析的数据。 可以分析区域以确定各种车辆特性，包括但不限于车辆速度，车牌识别，车辆占用，车辆数量和车辆类型。

公开(公告)号：US08531743B2

公开(公告)日：2013-09-10

申请号：US12906694

申请日：2010-10-18

申请人： Wencheng Wu ,  Edul N. Dalal

发明人： Wencheng Wu ,  Edul N. Dalal

IPC分类号： H04N1/46 ,  H04N1/60 ,  B41J29/393 ,  B41J2/015

CPC分类号： B41J2/2142 ,  B41J2/2139 ,  B41J2/2146

摘要： A system and method detect missing inkjets in an inkjet image generating system. The system and method generate digital images of printed documents that do not have test pattern data within them. The digital images are processed to detect light streaks and the positions of the light streaks are correlated to inkjet positions in printheads. Identification of the ink color associated with the correlated inkjet positions are obtained with analysis of color separated images and/or color errors.

摘要翻译： 一种系统和方法检测喷墨图像生成系统中的缺失喷墨。 该系统和方法生成在其中没有测试图案数据的打印文档的数字图像。 处理数字图像以检测光条纹，并且光条纹的位置与打印头中的喷墨位置相关。 通过分析颜色分离图像和/或颜色误差来获得与相关喷墨位置相关联的墨水颜色的识别。

公开(公告)号：US08520276B2

公开(公告)日：2013-08-27

申请号：US13116233

申请日：2011-05-26

申请人： Edul N. Dalal ,  Wencheng Wu

发明人： Edul N. Dalal ,  Wencheng Wu

IPC分类号： H04N1/60

CPC分类号： B41J29/393 ,  H04N1/00015 ,  H04N1/00023 ,  H04N1/00031 ,  H04N1/00045 ,  H04N1/00063 ,  H04N1/00068 ,  H04N1/00087 ,  H04N1/0009 ,  H04N1/6033 ,  H04N2201/0094 ,  H04N2201/326

摘要： Methods and systems are disclosed which are capable of efficiently performing color management of a variable gloss color printing system. The methods and systems select at least one set of the linear color values corresponding to the color profile for the printing device (at the nominal gloss condition). The linear color values selected comprise those obtained from color values corresponding to each node of the color profile at the nominal gloss condition. In a colorimetric embodiment, the linear color values can comprise: tristimulus values XYZ; red, green, blue (RGB); or luminance component Y, and two chromatic components C1 and C2 (YCC). In a reflectance embodiment, the linear color values comprise reflectance spectra. This exemplary method adds an offset term to each of the linear color values to produce a corresponding set of modified linear color values, and generates a color profile for the printing device at the desired gloss condition based on the modified linear color values.

摘要翻译： 公开了能够有效执行可变光泽彩色打印系统的颜色管理的方法和系统。 方法和系统选择与印刷装置的颜色特征对应的至少一组线性颜色值（在标称光泽条件下）。 所选择的线性颜色值包括从在标称光泽条件下的颜色轮廓的每个节点对应的颜色值获得的。 在比色实施例中，线性颜色值可以包括：三刺激值XYZ; 红，绿，蓝（RGB）; 或亮度分量Y，以及两个彩色分量C1和C2（YCC）。 在反射率实施例中，线性颜色值包括反射光谱。 该示例性方法将偏移项添加到每个线性颜色值以产生相应的一组修改的线性颜色值，并且基于修改的线性颜色值在期望的光泽条件下为打印装置生成颜色特征。

公开(公告)号：US08488191B2

公开(公告)日：2013-07-16

申请号：US12727791

申请日：2010-03-19

申请人： Edul N. Dalal ,  Wencheng Wu ,  Martin S. Maltz

发明人： Edul N. Dalal ,  Wencheng Wu ,  Martin S. Maltz

IPC分类号： H04N1/60

CPC分类号： H04N1/6022 ,  H04N1/603

摘要： What is disclosed is a novel system and method for determining color profiles based upon optimizing output image spatial noise. For each of a number of selected output colors, spatial noise values for a set of device-dependent color specifications that produce the selected output color are iteratively determined. The set of device-dependent color specifications is generated by varying a subset of colorants in the device-dependent color specifications while changing the remaining colorants to maintain the selected output color. The iterative process improves the spatial noise value, as determined by a spatial noise model, of the device-dependent color specifications that correspond to the selected output color. When an optimum spatial noise value is found, the device-dependent color specification having that spatial noise value is selected as the mapping for the selected device-independent color specification. Various embodiments are disclosed.

摘要翻译： 公开的是基于优化输出图像空间噪声来确定颜色特征的新颖系统和方法。 对于多个选择的输出颜色中的每一个，迭代地确定产生所选输出颜色的一组依赖于设备的颜色规范的空间噪声值。 通过在改变剩余着色剂以维持所选择的输出颜色的同时改变依赖于设备的颜色规格中的着色剂子集来生成依赖于设备的颜色规格。 迭代过程根据空间噪声模型改善与所选输出颜色对应的依赖于设备的颜色规格的空间噪声值。 当找到最佳空间噪声值时，选择具有该空间噪声值的依赖于设备的颜色规范作为所选设备无关颜色规范的映射。 公开了各种实施例。

公开(公告)号：US20130101171A1

公开(公告)日：2013-04-25

申请号：US13277719

申请日：2011-10-20

申请人： Orhan Bulan ,  Edgar A. Bernal ,  Robert Loce ,  Wencheng Wu

发明人： Orhan Bulan ,  Edgar A. Bernal ,  Robert Loce ,  Wencheng Wu

IPC分类号： G06K9/00 ,  G06K9/46 ,  H04N7/26

CPC分类号： G08G1/0133 ,  G06K9/00785 ,  H04N19/107 ,  H04N19/139 ,  H04N19/172 ,  H04N19/513 ,  H04N19/61

摘要： 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.

摘要翻译： 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：US20130058523A1

公开(公告)日：2013-03-07

申请号：US13223420

申请日：2011-09-01

申请人： Wencheng Wu ,  Beilei XU

发明人： Wencheng Wu ,  Beilei XU

IPC分类号： G06K9/00

CPC分类号： G06K9/00785

摘要： A method for automatically optimizing a parameter set for a tracking algorithm comprising receiving a series of image frames and processing the image frames using a tracking algorithm with an initialized parameter set. An updated parameter set is then created according to the processed image frames utilizing estimated tracking analytics. The parameters are validated using a performance metric that may be manually or automatically preformed using a GUI. The image frames are collected from a video camera with a fixed set-up at a fixed location. The image frames may include a training traffic video or a training video for tracking humans.

摘要翻译： 一种用于自动优化用于跟踪算法的参数集的方法，包括：使用具有初始化参数集的跟踪算法来接收一系列图像帧并处理所述图像帧。 然后使用估计的跟踪分析，根据处理的图像帧创建更新的参数集。 使用可以使用GUI手动或自动执行的性能度量来验证参数。 在固定位置固定设置的摄像机收集图像帧。 图像帧可以包括用于跟踪人的训练交通视频或训练视频。

公开(公告)号：US08335017B1

公开(公告)日：2012-12-18

申请号：US13167349

申请日：2011-06-23

申请人： Alvaro Enrique Gil ,  Lalit Keshav Mestha ,  Wencheng Wu ,  Edul N. Dalal

发明人： Alvaro Enrique Gil ,  Lalit Keshav Mestha ,  Wencheng Wu ,  Edul N. Dalal

IPC分类号： H04N1/46

CPC分类号： H04N1/622

摘要： What is disclosed is a feedback control based system and method for selecting spot color recipes for improved spot color rendition while simultaneously minimizing a function of image quality attributes formed with states defined as vectors such as L*, a*, b*, mottle, graininess, etc. Color is measured with an in-line spectrophotometer or with a full/partial width array. If the sensor is not available, then a model of the print device is used to optimize the function of image quality attributes. In one example embodiment, a spot color of interest is selected along with a set of image quality attributes to be improved for the spot colors of interest. Set points for process actuators and color recipes of the color marking device are adjusted such that a function of the image quality attributes is minimized when the spot color is rendered on the device. Various workflows are disclosed.

摘要翻译： 所公开的是基于反馈控制的系统和方法，用于选择改进的专色再现的专色配方，同时最小化由定义为诸如L *，a *，b *，斑点，颗粒度的矢量形成的图像质量属性的功能 等等。使用直列分光光度计或全/部分宽度阵列测量颜色。 如果传感器不可用，则使用打印设备的型号来优化图像质量属性的功能。 在一个示例性实施例中，选择感兴趣的专色连同一组图像质量属性以便针对感兴趣的专色进行改进。 调整颜色标记装置的处理执行器和颜色配置的设定点，使得当在设备上呈现专色时，图像质量属性的功能被最小化。 公开了各种工作流程。