公开(公告)号：US06674899B2

公开(公告)日：2004-01-06

申请号：US09739405

申请日：2000-12-18

申请人： Ramesh Nagarajan ,  Xing Li ,  Francis K. Tse

发明人： Ramesh Nagarajan ,  Xing Li ,  Francis K. Tse

IPC分类号： G06K900

CPC分类号： H04N1/4074 ,  H04N1/38

摘要： A method for generating a background statistics that distinguishes between gray level information from document areas and non-document areas. The method includes determining a full page background statistics from selected pixels within a scanned area; determining a sub-region background statistics from selected pixels within a sub-region of the scanned area; determining if the sub-region background statistics corresponds to image data from a non-document area; determining if the full page background statistics is corrupted; and generating a validated full page background statistics if the full page background statistics is corrupted.

摘要翻译： 一种用于生成从文档区域和非文档区域区分灰度级信息的背景统计信息的方法。 该方法包括从扫描区域内的所选像素确定全页背景统计; 从扫描区域的子区域内的所选像素确定子区域背景统计; 确定子区域背景统计是否对应于来自非文档区域的图像数据; 确定全页背景统计信息是否已损坏; 并且如果整页背景统计信息已损坏，则生成经过验证的全页背景统计信息。

公开(公告)号：US06625312B1

公开(公告)日：2003-09-23

申请号：US09514626

申请日：2000-02-28

申请人： Ramesh Nagarajan ,  Xing Li ,  Francis K. Tse

发明人： Ramesh Nagarajan ,  Xing Li ,  Francis K. Tse

IPC分类号： G06K934

CPC分类号： G06K9/00456 ,  H04N1/40062

摘要： A first aspect of the of the present invention is a system and method for classifying an input document based a segmentation tag statistics. The method includes receiving first pass segmentation tags for a plurality of pixels within a block of image data; determining an image type for the block of image data using statistics compiled from the first pass segmentation tags; and generating rendering tags for pixels within the block of image data as function of second pass segmentation tags and the image type. Beneficially, the image type identified for the block of image data is used to optimize the rendering process.

摘要翻译： 本发明的第一方面是一种基于分段标签统计分类输入文档的系统和方法。 该方法包括接收图像数据块内的多个像素的第一遍分割标签; 使用从第一遍分割标签编译的统计信息确定图像数据块的图像类型; 以及为图像数据块内的像素生成渲染标记，作为第二遍分割标签和图像类型的函数。 有利地，为图像数据块识别的图像类型被用于优化渲染过程。

公开(公告)号：US06650439B1

公开(公告)日：2003-11-18

申请号：US09393094

申请日：1999-09-09

申请人： Ramesh Nagarajan ,  Xing Li ,  Francis K. Tse

发明人： Ramesh Nagarajan ,  Xing Li ,  Francis K. Tse

IPC分类号： G06K1502

CPC分类号： H04N1/40062

摘要： A system and method for method of cleaning segmentation tags is disclosed. A method in accordance with the present invention comprises receiving a plurality of segmentation tags; generating block level tags in response to the received segmentation tags wherein each block level tag is a representative tag for a block of received segmentation tags; and cleaning selected ones of the received segmentation tags using a window of neighboring block level tags.

摘要翻译： 公开了一种清洁分段标签的方法的系统和方法。 根据本发明的方法包括：接收多个分割标签; 响应于所接收的分段标签生成块级标签，其中每个块级标签是用于所接收的分段标签的块的代表标签; 以及使用相邻块级标签的窗口清理所接收的分段标签中的所选择的一个。

公开(公告)号：US06639692B1

公开(公告)日：2003-10-28

申请号：US09393080

申请日：1999-09-09

申请人： Xing Li ,  Ramesh Nagarajan ,  Francis K. Tse

发明人： Xing Li ,  Ramesh Nagarajan ,  Francis K. Tse

IPC分类号： G06K1502

CPC分类号： H04N1/40062 ,  G06T7/11 ,  G06T7/187

摘要： A system and method of processing segmentation tags is disclosed. In accordance with the present invention, a method for processing segmentation tags that receives blocks of segmentation tags each of which has an associated block level tag that is representative of the segmentation tags within the block. The method positions a neighborhood window about a current block and a neighboring block and cleans a target segmentation tag within the current block based upon the block level tags within the neighborhood window using a set of tag cleaning rules.

摘要翻译： 公开了一种处理分段标签的系统和方法。 根据本发明，一种用于处理分段标签的方法，所述分割标签接收分段标签块，每个标记具有代表块内的分段标签的相关联的块级标签。 该方法定位关于当前块和相邻块的邻域窗口，并使用一组标签清理规则，基于邻域窗口内的块级标签来清除当前块内的目标分段标签。

公开(公告)号：US06516091B1

公开(公告)日：2003-02-04

申请号：US09392902

申请日：1999-09-09

申请人： Ramesh Nagarajan ,  Xing Li ,  Michael E. Meyers ,  Francis K. Tse

发明人： Ramesh Nagarajan ,  Xing Li ,  Michael E. Meyers ,  Francis K. Tse

IPC分类号： G06K900

CPC分类号： H04N1/40062

摘要： A system for processing segmentation tags to generate a block level tag representative of a group of segmentation tags. The system includes first and second statistic compilation circuits, each of the compilation circuits being connected to receive segmentation tags and compile a statistic for a plurality of the received segmentation tags. An address controller connected to the first and second statistic compilation circuits operates to select one of the first and second compilation circuits to receive the segmentation tags.

摘要翻译： 一种用于处理分段标签以产生代表一组分段标签的块级标签的系统。 该系统包括第一和第二统计量编译电路，每个编译电路被连接以接收分段标签并编译多个接收的分段标签的统计量。 连接到第一和第二统计编译电路的地址控制器操作以选择第一和第二编译电路中的一个来接收分段标签。

公开(公告)号：US07580569B2

公开(公告)日：2009-08-25

申请号：US11268147

申请日：2005-11-07

申请人： Francis K. Tse ,  Ramesh Nagarajan

发明人： Francis K. Tse ,  Ramesh Nagarajan

IPC分类号： G06K9/34

CPC分类号： H04N1/4092

摘要： A method and system to convert an image described in a page description language to a contone image. The contone image is halftoned and encoded to generate image data including edge tag data and image data. A tagged state value of each pixel of image data within a predefined neighborhood of pixels is determined. The image data is filtered using a predetermined set of filter weighting values wherein each pixel of image data within the predefined neighborhood of pixels has an associated filter weighting value. A predetermined filtered image value is assigned to each pixel having a tagged state indicating an edge pixel. A summation of all filtered image values for the predefined neighborhood of pixels is assigned when the tagged state of the pixel is a non-edge pixel.

摘要翻译： 将页面描述语言中描述的图像转换为连字图像的方法和系统。 连续色调图像被半色调编码以产生包括边缘标签数据和图像数据的图像数据。 确定预定义像素邻域内的图像数据的每个像素的标记状态值。 使用预定的一组过滤器加权值来过滤图像数据，其中预定的像素邻域内的图像数据的每个像素具有相关联的滤波器权重值。 将预定的滤波图像值分配给具有指示边缘像素的带状态的每个像素。 当像素的标记状态是非边缘像素时，分配用于预定义像素邻域的所有滤波图像值的求和。

公开(公告)号：US06519367B2

公开(公告)日：2003-02-11

申请号：US09158993

申请日：1998-09-23

申请人： Ramesh Nagarajan ,  William A. Cook ,  Francis K. Tse

发明人： Ramesh Nagarajan ,  William A. Cook ,  Francis K. Tse

IPC分类号： G06K936

CPC分类号： H04N1/40075 ,  H04N1/4052

摘要： A method and system implements selective, memory efficient, control over the amount of error diffused in a hybrid screening system. An image context error computer receives a pixel classification and an error value. Upon receiving these data, a set of shift registers supplies a fractional portion of the error value to an error diffusion circuit. A bypass thresholder receives screened video and applies simple thresholding. In parallel with the simple thresholding, an error diffuser receives screened video and applies error diffusion. The results of the two processes are output to a multiplexer which outputs one based on the pixel classification.

摘要翻译： 一种方法和系统实现选择性，记忆效率高，控制混合筛选系统中扩散的误差量。 图像上下文错误计算机接收像素分类和错误值。 一旦接收到这些数据，一组移位寄存器将误差值的小数部分提供给误差扩散电路。 旁路阈值器接收被屏蔽的视频并应用简单的阈值。 与简单的阈值并行，错误扩散器接收屏幕视频并应用误差扩散。 将两个处理的结果输出到基于像素分类输出的多路复用器。

公开(公告)号：US06437872B1

公开(公告)日：2002-08-20

申请号：US09158155

申请日：1998-09-22

申请人： Michael L. Davidson ,  Francis K. Tse ,  Harry L. Parker ,  Ramesh Nagarajan

发明人： Michael L. Davidson ,  Francis K. Tse ,  Harry L. Parker ,  Ramesh Nagarajan

IPC分类号： G06F1300

CPC分类号： G06K15/02 ,  G06K15/1852

摘要： A high addressable multibit screening device and method for use in a PDL interpreter environment achieve improved printing resolution and quality. A PDL interpreter receives a PDL document from a host source, which identifies one or more objects that can be fully toned (black) or partially toned (line art or images). Each of these objects can be processed differently. Fully toned objects are processed within the interpreter and directly output in a predetermined output. Partially toned objects are sent to a high addressable screening module within the interpreter for processing prior to outputting in a desired output format. The high addressable screening module screens the partially toned objects to obtain multibit screened data for output. This can be achieved by converting an array of single threshold values to an array of three or more sub-threshold values in a way that preserves the pattern specified by the original threshold array (one bit per pixel image), but improves the quality of the rendered image relative to the quality of a one bit per pixel (per colorant) image. The partially toned data is then output with the fully toned objects for subsequent printing. This achieves an increase in available tints and spatial frequency for a given halftone pattern while reducing memory requirements.

摘要翻译： 用于PDL解释器环境的高可寻址多位屏蔽设备和方法可实现改进的打印分辨率和质量。 PDL解释器从主机源接收PDL文档，其标识可以被完全调色（黑色）或部分调色（线条画或图像）的一个或多个对象。 可以对这些对象中的每一个进行不同的处理。 完全调色的物体在解释器内处理，并直接输出到预定的输出。 将部分色调对象发送到解释器内的高可寻址筛选模块，以便在以期望的输出格式输出之前进行处理。 高可寻址屏蔽模块屏幕部分调色对象以获得多位屏蔽数据进行输出。 这可以通过将保持由原始阈值阵列指定的模式（每像素图像一个位）的方式将单个阈值的阵列转换为三个或更多个子阈值的阵列来实现，但是提高了 渲染图像相对于每像素一个像素（每个着色剂）图像的质量。 然后用完全调色的物体输出部分色调的数据以供后续打印。 这实现了给定半色调图案的可用色调和空间频率的增加，同时减少了存储器需求。

公开(公告)号：US06219465B1

公开(公告)日：2001-04-17

申请号：US09159042

申请日：1998-09-23

申请人： Aron Nacman ,  Anthony M. Frumusa ,  Francis K. Tse ,  Ramesh Nagarajan ,  William A. Cook ,  Michael K. Carney

发明人： Aron Nacman ,  Anthony M. Frumusa ,  Francis K. Tse ,  Ramesh Nagarajan ,  William A. Cook ,  Michael K. Carney

IPC分类号： G06K932

CPC分类号： G06T3/4007 ,  H04N1/3935

摘要： A system and method for selective scaling of an image by selective implementation of a window averaging processing technique or an interpolation processing technique. For enlargement scaling, the interpolation processor is implemented. For reduction scaling, the window averaging processor is implemented. For anamorphic scaling, the window averaging processor may be selected and implemented for reduction processing pursuant to a two-pass processing technique wherein the interpolator processing will be implemented thereafter.

摘要翻译： 一种用于通过选择性地实现窗口平均处理技术或内插处理技术来选择性地缩放图像的系统和方法。 对于放大缩放，实现插值处理器。 为了缩小缩放，实现了窗口平均处理器。 对于变形缩放，可以根据二次处理技术来选择和实现窗口平均处理器用于缩小处理，其中其后将实现内插器处理。

公开(公告)号：US20100042655A1

公开(公告)日：2010-02-18

申请号：US12193324

申请日：2008-08-18

申请人： Francis K. Tse ,  Minette Ann Beabes ,  Ramesh Nagarajan ,  Susan Marie Zak

发明人： Francis K. Tse ,  Minette Ann Beabes ,  Ramesh Nagarajan ,  Susan Marie Zak

IPC分类号： G06F17/30

CPC分类号： G06F16/122

摘要： A system and method manages a file storage system by defining an arbitration policy, the arbitration policy defining a pre-defined usage level threshold and defining implementation priorities for a plurality of storage management mitigation actions, each storage management mitigation action defining a distinct action to be taken to reduce the usage level of the file storage system and a parameter for selecting which file or files stored in the file storage system qualify for the storage management mitigation action. If a usage level of the file storage system is greater than the pre-defined usage level threshold, a storage management mitigation action is selected from the plurality of storage management mitigation actions. Which files that qualify for the selected storage management mitigation action is determined and the selected storage management mitigation action is applied to the files determined to qualify for the selected storage management mitigation action to reduce the usage level of the file storage system.

摘要翻译： 系统和方法通过定义仲裁策略来管理文件存储系统，所述仲裁策略定义预定义的使用级别阈值并且定义多个存储管理缓解动作的实现优先级，每个存储管理缓解动作定义了明确的动作 被采取以减少文件存储系统的使用水平和用于选择存储在文件存储系统中的文件或文件的参数有资格进行存储管理缓解动作的参数。 如果文件存储系统的使用级别大于预定义的使用级别阈值，则从多个存储管理缓解动作中选择存储管理缓解动作。 确定符合选定的存储管理缓解措施的哪些文件，并且将所选择的存储管理缓解动作应用于被确定为限定所选择的存储管理缓解动作的文件，以减少文件存储系统的使用水平。