公开(公告)号：US06243499B1

公开(公告)日：2001-06-05

申请号：US09046424

申请日：1998-03-23

申请人： Robert P. Loce ,  Yeqing Zhang ,  Michael Branciforte

发明人： Robert P. Loce ,  Yeqing Zhang ,  Michael Branciforte

IPC分类号： G06K940

CPC分类号： G06T5/20

摘要： The present invention is a method and apparatus for the identification and tagging of antialiased pixels within regions of an image. The techniques described improve the recognition of fine gray features and enable the detection of both black and white features on high and low contrast backgrounds. The system relies on the establishment of the sense (positive/negative) of an image by first using a histogramming operation. Once the sense is determined, a plurality of logical channels are used to select a threshold, binarize a region of the image, generate a vector representative of the region, and to process the vector to identify whether an antialiased pixel is present therein. Subsequently, the output of the channels is logically combined to produce an antialias tag.

摘要翻译： 本发明是用于识别和标记图像区域内的抗锯齿像素的方法和装置。 所描述的技术改善了细灰色特征的识别，并且能够在高对比度和低对比度背景下检测黑白特征。 该系统首先使用直方图操作来依赖图像的感觉（正/负）的建立。 一旦确定了感觉，则使用多个逻辑信道来选择阈值，二值化图像的区域，生成表示该区域的向量，并且处理该矢量以识别其中是否存在抗锯齿像素。 随后，通道的输出被逻辑地组合以产生抗混叠标签。

公开(公告)号：US09165201B2

公开(公告)日：2015-10-20

申请号：US13233780

申请日：2011-09-15

申请人： Yeqing Zhang ,  Beilei Xu ,  Lalit K. Mestha ,  Graham Pennington

发明人： Yeqing Zhang ,  Beilei Xu ,  Lalit K. Mestha ,  Graham Pennington

IPC分类号： G06K9/32 ,  G06K9/00

CPC分类号： G06K9/3241 ,  G06K9/00362 ,  G06K9/3233

摘要： An embodiment generally relates to systems and methods for determining cell phone usage automatically by individuals operating vehicles. A processing module can process multi-spectral images or videos of individuals and detect different regions in the image such as face regions, hand regions, and cell phone regions. Further, the processing module can analyze the regions based on locations and numbers of skin pixels and cell phone pixels to determine if the individual is holding his or her cell phone near his or her face. Based on the analysis, it can be determined whether the individual is operating the cell phone. Further, the analysis can yield a confidence level associated with the cell phone usage.

摘要翻译： 实施例一般涉及用于由个人操作车辆自动确定手机使用的系统和方法。 处理模块可以处理个人的多光谱图像或视频，并检测图像中的不同区域，例如面部区域，手区域和蜂窝电话区域。 此外，处理模块可以基于皮肤像素和手机像素的位置和数量来分析区域，以确定个体是否将他或她的手机保持在他或她的脸部附近。 基于分析，可以确定个人是否在操作手机。 此外，分析可以产生与手机使用相关联的置信水平。

公开(公告)号：US20130265419A1

公开(公告)日：2013-10-10

申请号：US13441269

申请日：2012-04-06

申请人： Orhan Bulan ,  Yao Rong Wang ,  Zhigang Fan ,  Edgar A. Bernal ,  Robert P. Loce ,  Yeqing Zhang

发明人： Orhan Bulan ,  Yao Rong Wang ,  Zhigang Fan ,  Edgar A. Bernal ,  Robert P. Loce ,  Yeqing Zhang

IPC分类号： H04N7/18

CPC分类号： G08G1/143 ,  G08G1/147

摘要： A method for determining parking availability includes receiving video data from a sequence of frames taken from an image capture device that is monitoring a parking area. The method includes determining background and foreground images in an initial frame of the sequence of frames. The method further includes updating the background and foreground images in each of the sequence of frames following the initial frame. The method also includes determining a length of a parking space using the determined background and foreground images. The determining includes computing a pixel distance between a foreground image and one of an adjacent foreground image and an end of the parking area. The determining further includes mapping the pixel distance to an actual distance for estimating the length of the parking space.

摘要翻译： 用于确定停车可用性的方法包括从从正在监视停车区域的图像捕获装置获取的帧序列中接收视频数据。 该方法包括确定帧序列的初始帧中的背景和前景图像。 该方法还包括在初始帧之后的每个帧序列中更新背景和前景图像。 该方法还包括使用所确定的背景和前景图像确定停车位的长度。 该确定包括计算前景图像和相邻前景图像之一与停车区域的结束之间的像素距离。 该确定还包括将像素距离映射到用于估计停车位的长度的实际距离。

公开(公告)号：US08432582B2

公开(公告)日：2013-04-30

申请号：US10923116

申请日：2004-08-20

申请人： Yeqing Zhang ,  Robert Paul Loce ,  Beilei Xu

发明人： Yeqing Zhang ,  Robert Paul Loce ,  Beilei Xu

IPC分类号： G06K15/00 ,  H04N1/40

CPC分类号： H04N1/603

摘要： Compensation for rendering device non-uniformities is provided for halftoned images. A spatially dependent tone reproduction curve (TRC) provides compensation values. Pixel location information is used to access TRC values. For example, the values are modification values. The modification values are added to the pixel values to generate combined values. Quantization is applied to the combined values to prepare compensated image data for rendering. For example, Rank Ordered Error Diffusion is applied to the combined values. The combined values may include diffused error from previously processed pixels. Gray values may be estimated for the respective pixels. The estimated gray values may be used to access compensation information from a TRC that is both spatially and gray value dependent. Mathematical basis decomposition is used to reduce TRC memory requirements. For example, Discrete Cosine Transformation, Singular Value Decomposition or Principal Component Analysis is used to determine a compact form for the TRC.

摘要翻译： 为半色调图像提供渲染设备不均匀性的补偿。 空间依赖色调再现曲线（TRC）提供补偿值。 像素位置信息用于访问TRC值。 例如，值是修改值。 将修改值添加到像素值以生成组合值。 将量化应用于组合值以准备用于渲染的补偿图像数据。 例如，将秩排序误差扩散应用于组合值。 组合的值可以包括来自先前处理的像素的扩散误差。 可以针对各个像素估计灰度值。 估计的灰度值可用于从空间和灰度依赖的TRC访问补偿信息。 数学基础分解用于减少TRC记忆体要求。 例如，使用离散余弦变换，奇异值分解或主成分分析来确定TRC的紧凑形式。

公开(公告)号：US20110279503A1

公开(公告)日：2011-11-17

申请号：US12780654

申请日：2010-05-14

申请人： Howard A. Mizes ,  Helen HaeKyung Shin ,  Yeqing Zhang

发明人： Howard A. Mizes ,  Helen HaeKyung Shin ,  Yeqing Zhang

IPC分类号： B41J29/38

CPC分类号： B41J29/393 ,  B41J3/543 ,  B41J2029/3935

摘要： A printer operating method enables a controller to identify process direction errors in an optical imaging system. The method includes identifying a printhead roll error for each printhead in a plurality of printheads in a printer, moving each printhead by an amount that corrects the printhead roll error for the corresponding printhead, generating a plurality of dashes on media with the plurality of printheads as the media moves past the plurality of printheads, identifying a position for each dash in the process direction from image data of the plurality of dashes on the media, identifying a displacement in the process direction for each optical detector in a linear array of optical detectors used to generated the image data of the plurality of dashes, the displacement being identified with reference to the identified positions for the dashes, and operating the printer to compensate for the identified displacements of the optical detectors.

摘要翻译： 打印机操作方法使得控制器能够识别光学成像系统中的过程方向误差。 该方法包括识别打印机中的多个打印头中的每个打印头的打印头滚动误差，使每个打印头移动一定量，该量可校正相应打印头的打印头滚动误差，在多个打印头的介质上产生多个破折号， 介质移动通过多个打印头，从介质上的多个破折号的图像数据中识别处理方向上每个破折号的位置，识别所使用的光学检测器的线性阵列中每个光学检测器的处理方向上的位移 为了产生多个破折号的图像数据，该位移是参考用于破折号的识别的位置来识别的，并且操作打印机以补偿所识别出的光学检测器的位移。

公开(公告)号：US07627191B2

公开(公告)日：2009-12-01

申请号：US11505220

申请日：2006-08-14

申请人： Beilei Xu ,  Robert P. Loce ,  Yeqing Zhang

发明人： Beilei Xu ,  Robert P. Loce ,  Yeqing Zhang

IPC分类号： G06K9/40

CPC分类号： H04N1/3872 ,  H04N1/3877

摘要： Image data is scaled, rotated and/or otherwise manipulated. Diffusive effects of associated interpolation and/or re-sampling are compensated for, or corrected, by applying an adaptive packing form of error diffusion to output data of one or more manipulating transforms. For example, rank order error diffusion is applied to output data of a manipulating transform, thereby restoring compaction to otherwise diffuse halftone structures (e.g., halftone dots, lines, etc), saturated text and/or other small, high contrast image elements.

摘要翻译： 图像数据被缩放，旋转和/或以其它方式操纵。 通过将误差扩散的自适应填充形式应用于一个或多个操纵变换的输出数据来补偿或校正相关内插和/或重新采样的扩散效应。 例如，排序误差扩散被应用于操纵变换的输出数据，由此恢复压缩以另外漫射半色调结构（例如，半色调点，线等），饱和文本和/或其它小的高对比度图像元素。

公开(公告)号：US20080037899A1

公开(公告)日：2008-02-14

申请号：US11505220

申请日：2006-08-14

申请人： Beilei Xu ,  Robert P. Loce ,  Yeqing Zhang

发明人： Beilei Xu ,  Robert P. Loce ,  Yeqing Zhang

IPC分类号： G06K9/36 ,  G06K9/32

CPC分类号： H04N1/3872 ,  H04N1/3877

摘要： Image data is scaled, rotated and/or otherwise manipulated. Diffusive effects of associated interpolation and/or re-sampling are compensated for, or corrected, by applying an adaptive packing form of error diffusion to output data of one or more manipulating transforms. For example, rank order error diffusion is applied to output data of a manipulating transform, thereby restoring compaction to otherwise diffuse halftone structures (e.g., halftone dots, lines, etc), saturated text and/or other small, high contrast image elements.

摘要翻译： 图像数据被缩放，旋转和/或以其它方式操纵。 通过将误差扩散的自适应填充形式应用于一个或多个操纵变换的输出数据来补偿或校正相关内插和/或重新采样的扩散效应。 例如，排序误差扩散被应用于操纵变换的输出数据，由此恢复压缩以另外漫射半色调结构（例如，半色调点，线等），饱和文本和/或其它小的高对比度图像元素。

公开(公告)号：US20060077489A1

公开(公告)日：2006-04-13

申请号：US10923116

申请日：2004-08-20

申请人： Yeqing Zhang ,  Robert Loce ,  Beilei Xu

发明人： Yeqing Zhang ,  Robert Loce ,  Beilei Xu

IPC分类号： H04N1/46

CPC分类号： H04N1/603

摘要： Compensation for rendering device non-uniformities is provided for halftoned images. A spatially dependent tone reproduction curve (TRC) provides compensation values. Pixel location information is used to access TRC values. For example, the values are modification values. The modification values are added to the pixel values to generate combined values. Quantization is applied to the combined values to prepare compensated image data for rendering. For example, Rank Ordered Error Diffusion is applied to the combined values. The combined values may include diffused error from previously processed pixels. Gray values may be estimated for the respective pixels. The estimated gray values may be used to access compensation information from a TRC that is both spatially and gray value dependent. Mathematical basis decomposition is used to reduce TRC memory requirements. For example, Discrete Cosine Transformation, Singular Value Decomposition or Principal Component Analysis is used to determine a compact form for the TRC.

公开(公告)号：US20130070957A1

公开(公告)日：2013-03-21

申请号：US13233780

申请日：2011-09-15

申请人： Yeqing Zhang ,  Beilei Xu ,  Lalit K. Mestha ,  Graham Pennington

发明人： Yeqing Zhang ,  Beilei Xu ,  Lalit K. Mestha ,  Graham Pennington

IPC分类号： G06K9/00

CPC分类号： G06K9/3241 ,  G06K9/00362 ,  G06K9/3233

摘要： An embodiment generally relates to systems and methods for determining cell phone usage automatically by individuals operating vehicles. A processing module can process multi-spectral images or videos of individuals and detect different regions in the image such as face regions, hand regions, and cell phone regions. Further, the processing module can analyze the regions based on locations and numbers of skin pixels and cell phone pixels to determine if the individual is holding his or her cell phone near his or her face. Based on the analysis, it can be determined whether the individual is operating the cell phone. Further, the analysis can yield a confidence level associated with the cell phone usage.

摘要翻译： 实施例一般涉及用于由个人操作车辆自动确定手机使用的系统和方法。 处理模块可以处理个人的多光谱图像或视频，并检测图像中的不同区域，例如面部区域，手区域和蜂窝电话区域。 此外，处理模块可以基于皮肤像素和手机像素的位置和数量来分析区域，以确定个体是否将他或她的手机保持在他或她的脸部附近。 基于分析，可以确定个人是否在操作手机。 此外，分析可以产生与手机使用相关联的置信水平。

公开(公告)号：US08317291B2

公开(公告)日：2012-11-27

申请号：US12621356

申请日：2009-11-18

申请人： Howard A. Mizes ,  Yeqing Zhang

发明人： Howard A. Mizes ,  Yeqing Zhang

IPC分类号： B41J29/393

CPC分类号： H04N1/4015

摘要： A method enables an inkjet printing system to attenuate image noise in an image of a test strip obtained as print media bearing the test strip travels over a roller in the printing system. The method includes illuminating blank media as the media travels over a rotating member, generating electrical signals corresponding to light reflected by the blank media as the blank media travels over the rotating member, converting the electrical signals to image data of the blank media, printing a test strip on media, illuminating the media as the media on which the test strip is printed travels over the rotating member, generating electrical signals corresponding to light reflected by the media as the media on which the test strip is printed travels over the rotating member, converting the electrical signals to image data of the media on which the test strip is printed, modifying the image data of the media on which the test strip is printed with the image data of the blank media, and storing the modified image data in memory.

摘要翻译： 一种方法使得喷墨打印系统能够衰减作为打印介质的测试条的图像中的图像噪声，该打印介质承载测试条在打印系统中的辊上行进。 该方法包括当介质在旋转构件上行进时照射空白介质，当空白介质在旋转构件上行进时，产生对应于由空白介质反射的光的电信号，将电信号转换成空白介质的图像数据， 介质上的测试条，当印刷有测试条的介质在旋转构件上行进时照射介质，产生对应于介质反射的光的电信号，因为其上印刷有测试条的介质在旋转构件上行进， 将电信号转换成其上印有测试条的介质的图像数据，用空白介质的图像数据修改打印有测试条的介质的图像数据，并将修改的图像数据存储在存储器中。