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1. 发明申请

US20060077489A1 Uniformity compensation in halftoned images 有权
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.

2. 发明授权

US07719719B2 Sharpening a halftoned image 有权
标题翻译：锐化半色调图像
公开(公告)号：US07719719B2
公开(公告)日：2010-05-18
申请号：US11522610
申请日：2006-09-18
申请人： Robert P. Loce , Yeqing Zhang , Beilei Xu
发明人： Robert P. Loce , Yeqing Zhang , Beilei Xu
IPC分类号： H04N1/405 , H04N1/409
CPC分类号： H04N1/40075 , H04N1/4092
摘要： Images that include halftone structures are sharpened. A copy of received halftone image data is blurred, thereby reducing a detectability of edges of the halftone structures. Edges remaining in the blurred image data are detected. An edge enhancement image is generated based on the detected edges. The original received halftone image data is combined with the edge enhancement image, thereby generating sharpness enhanced image data having halftone structures. The sharpness enhanced image data having halftone structures can be rendered through a halftone screen that is compatible with a halftone screen that was used to generate the originally received image data. Alternatively, the sharpness enhanced image data having halftone structures is rendered according to error diffusion techniques, such as, rank order error diffusion in order to achieve or maintain dot or halftone structure compaction.
摘要翻译：包括半色调结构的图像被削尖。所接收的半色调图像数据的副本被模糊，从而降低了半色调结构的边缘的可检测性。检测残留在模糊图像数据中的边缘。基于检测到的边缘生成边缘增强图像。原始接收的半色调图像数据与边缘增强图像组合，从而产生具有半色调结构的锐度增强的图像数据。具有半色调结构的清晰度增强的图像数据可以通过与用于生成原始接收的图像数据的半色调屏幕兼容的半色调屏幕来呈现。或者，具有半色调结构的清晰度增强的图像数据根据误差扩散技术（诸如等级误差扩散）来形成，以实现或维持点或半色调结构压缩。

3. 发明申请

US20130070957A1 SYSTEMS AND METHODS FOR DETECTING CELL PHONE USAGE BY A VEHICLE OPERATOR 有权
标题翻译：用于检测车辆操作员使用的蜂窝电话的系统和方法
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。

4. 发明申请

US20080068660A1 Sharpening a halftoned image 有权
标题翻译：锐化半色调图像
公开(公告)号：US20080068660A1
公开(公告)日：2008-03-20
申请号：US11522610
申请日：2006-09-18
申请人： Robert P. Loce , Yeqing Zhang , Beilei Xu
发明人： Robert P. Loce , Yeqing Zhang , Beilei Xu
IPC分类号： G06F15/00
CPC分类号： H04N1/40075 , H04N1/4092
摘要： Images that include halftone structures are sharpened. A copy of received halftone image data is blurred, thereby reducing a detectability of edges of the halftone structures. Edges remaining in the blurred image data are detected. An edge enhancement image is generated based on the detected edges. The original received halftone image data is combined with the edge enhancement image, thereby generating sharpness enhanced image data having halftone structures. The sharpness enhanced image data having halftone structures can be rendered through a halftone screen that is compatible with a halftone screen that was used to generate the originally received image data. Alternatively, the sharpness enhanced image data having halftone structures is rendered according to error diffusion techniques, such as, rank order error diffusion in order to achieve or maintain dot or halftone structure compaction.
摘要翻译：包括半色调结构的图像被削尖。所接收的半色调图像数据的副本被模糊，从而降低了半色调结构的边缘的可检测性。检测残留在模糊图像数据中的边缘。基于检测到的边缘生成边缘增强图像。原始接收的半色调图像数据与边缘增强图像组合，从而产生具有半色调结构的锐度增强的图像数据。具有半色调结构的清晰度增强的图像数据可以通过与用于生成原始接收的图像数据的半色调屏幕兼容的半色调屏幕来呈现。或者，具有半色调结构的清晰度增强的图像数据根据误差扩散技术（例如等级误差扩散）来进行，以实现或维持点或半色调结构压缩。

5. 发明授权

US09165201B2 Systems and methods for detecting cell phone usage by a vehicle operator 有权
标题翻译：用于检测车辆操作员的手机使用的系统和方法
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。

6. 发明授权

US08432582B2 Uniformity compensation in halftoned images 有权
标题翻译：半色调图像的均匀性补偿
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。

7. 发明授权

US07627191B2 Image manipulation 有权
标题翻译：图像处理
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。

8. 发明申请

US20080037899A1 Image manipulation 有权
标题翻译：图像处理
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。

9. 发明申请

US20060152764A1 Systems and methods for controlling a tone reproduction curve using error diffusion 有权
标题翻译：使用误差扩散来控制色调再现曲线的系统和方法
公开(公告)号：US20060152764A1
公开(公告)日：2006-07-13
申请号：US11034057
申请日：2005-01-13
申请人： Robert Loce , Beilei Xu , Reiner Eschbach , David Lieberman
发明人： Robert Loce , Beilei Xu , Reiner Eschbach , David Lieberman
IPC分类号： H04N1/405
CPC分类号： H04N1/407 , H04N1/40068 , H04N1/4052
摘要： A method of adjusting a TRC of an image is provided. The method involves receiving an image at an input resolution, resampling the image to a processing resolution if the imput resolution and the processing resolution are not same, processing the image using rank-ordered error diffusion, and resampling the processed image to a desired output resolution for the image if the processing resolution and the output resolution are not same.
摘要翻译：提供了一种调整图像的TRC的方法。该方法包括以输入分辨率接收图像，如果输入分辨率和处理分辨率不相同，则将图像重新采样到处理分辨率，使用等级错误扩散处理图像，并将处理的图像重新采样到期望的输出分辨率对于图像，如果处理分辨率和输出分辨率不相同。

10. 发明申请

US20060023258A1 Method for minimizing boundary defects using halftone classes with matched harmonics 审中-公开
标题翻译：使用具有匹配谐波的半色调类最小化边界缺陷的方法
公开(公告)号：US20060023258A1
公开(公告)日：2006-02-02
申请号：US10909627
申请日：2004-08-02
申请人： Robert Loce , Charles Hains , Beilei Xu , Connie Purdum , Xiaoxue Cheng
发明人： Robert Loce , Charles Hains , Beilei Xu , Connie Purdum , Xiaoxue Cheng
IPC分类号： H04N1/405
CPC分类号： H04N1/4058
摘要： A method for minimizing boundary effects when switching between halftone screens on a scanline, includes selecting a first halftone screen having a first fundamental frequency and a first angle for printing pixels of a first type; and selecting a second halftone screen having a second fundamental frequency and a second angle for printing pixels of a second type, wherein the second frequency and second angle are harmonically matched to the first frequency and first angle, wherein at least one pixel of the second type is adjacent to a pixel of the first type. In one embodiment, the first and second frequencies are selected to have a substantially zero frequency beat. In another, the first and second frequencies are selected to have a substantially high frequency beat.
摘要翻译：一种用于在扫描线上的半色调屏幕之间切换时最小化边界效应的方法，包括选择具有第一基频和第一角度的第一半色调屏幕，用于打印第一类型的像素; 以及选择具有第二基频和第二角度的第二半色调屏幕，用于打印第二类型的像素，其中所述第二频率和第二角度与所述第一频率和第一角度谐波匹配，其中所述第二类型的至少一个像素与第一类型的像素相邻。在一个实施例中，第一和第二频率被选择为具有基本为零的频率节拍。在另一个中，选择第一和第二频率具有基本上高的频率节拍。

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