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1.发明授权Method and apparatus for implementing integrated cavity effect correction in scanners 有权在扫描仪中实现集成腔效应校正的方法和装置公开(公告)号：US06631215B1
公开(公告)日：2003-10-07
申请号：US09448009
申请日：1999-11-23
IPC分类号： G06K940
CPC分类号： G06T5/20
摘要： A method and apparatus are provided for determining a weighted average measured reflectance parameter Rm for pixels in an image for use in integrated cavity effect correction of the image. For each pixel of interest Pi,j in the image, an approximate spatial dependent average Ai,j, Bi,j of video values in a region of W pixels by H scan lines surrounding the pixel of interest Pi,j is computed by convolving video values Vi,j of the image in the region with a uniform filter. For each pixel of interest Pi,j a result of the convolving step is used as the reflectance parameter Rm. The apparatus includes a video buffer for storing the pixels of the original scanned image, and first and second stage average buffers for storing the computed approximate spatial dependent averages Ai,j, Bi,j. First and second stage processing circuits respectively generate the first and second stage average values Ai,j, Bi,j by convolving the video values of the image in a preselected region with a uniform filter.
摘要翻译： 提供一种方法和装置，用于确定用于图像的集成腔效应校正的图像中的像素的加权平均测量反射率参数Rm。 对于图像中的每个感兴趣像素P i，j，通过卷积视频来计算在围绕像素p，j的W像素的H像素的区域中的视频值的近似空间依赖平均值Ai，j，Bi，j 在具有均匀滤波器的区域中的图像的值Vi，j。 对于感兴趣的每个像素Pi，j，使用卷积步骤的结果作为反射参数Rm。 该装置包括用于存储原始扫描图像的像素的视频缓冲器，以及用于存储所计算的近似空间相关平均值Ai，j，Bi，j的第一和第二平均缓冲器。 第一和第二级处理电路通过使用均匀的滤波器卷积预选区域中的图像的视频值，分别产生第一和第二平均值Ai，j，Bi，j。
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公开(公告)号：US20090003729A1
公开(公告)日：2009-01-01
申请号：US11823893
申请日：2007-06-29
IPC分类号： G06K9/36
CPC分类号： H04N1/00002 , H04N1/00005 , H04N1/00015 , H04N1/00023 , H04N1/00031 , H04N1/00045 , H04N1/00053 , H04N1/00063 , H04N1/00068 , H04N1/00087 , H04N1/0009 , H04N1/4015 , H04N1/409
摘要： Defects in an image forming system may give rise to scratched fiducials, missing fiducial regions, or other defects in an image that can run parallel to the process direction. The present disclosure provides for a fiducial compensation method and system for detecting defects thereby allowing spatial tone reproduction curves to be calculated and applied to a digital image in order to eliminate printed streaks due to a photoreceptor's non-uniformities.
摘要翻译： 图像形成系统中的缺陷可能会导致划痕的基准，缺失的基准区域或图像中可能平行于过程方向运行的其他缺陷。 本公开提供了用于检测缺陷的基准补偿方法和系统，从而允许空间色调再现曲线被计算并应用于数字图像，以便消除由于感光体的不均匀性引起的印刷条纹。
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公开(公告)号：US07830554B2
公开(公告)日：2010-11-09
申请号：US11823893
申请日：2007-06-29
CPC分类号： H04N1/00002 , H04N1/00005 , H04N1/00015 , H04N1/00023 , H04N1/00031 , H04N1/00045 , H04N1/00053 , H04N1/00063 , H04N1/00068 , H04N1/00087 , H04N1/0009 , H04N1/4015 , H04N1/409
摘要： Defects in an image forming system may give rise to scratched fiducials, missing fiducial regions, or other defects in an image that can run parallel to the process direction. The present disclosure provides for a fiducial compensation method and system for detecting defects thereby allowing spatial tone reproduction curves to be calculated and applied to a digital image in order to eliminate printed streaks due to a photoreceptor's non-uniformities.
摘要翻译： 图像形成系统中的缺陷可能会导致划痕的基准，缺失的基准区域或图像中可能平行于过程方向运行的其他缺陷。 本公开提供了用于检测缺陷的基准补偿方法和系统，从而允许空间色调再现曲线被计算并应用于数字图像，以便消除由于感光体的不均匀性引起的印刷条纹。
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公开(公告)号：US07515772B2
公开(公告)日：2009-04-07
申请号：US11028394
申请日：2005-01-03
申请人： Xing Li , Terri A. Clingerman
发明人： Xing Li , Terri A. Clingerman
IPC分类号： G06K9/36
CPC分类号： H04N1/00681 , H04N1/00718 , H04N1/00737 , H04N1/00745 , H04N1/00748 , H04N1/00774 , H04N1/3878
摘要： Disclosed methods and systems perform electronic registration of digitally captured images in real-time and performs accurate and robust digital image processing by analyzing the entire digitally captured image.
摘要翻译： 公开的方法和系统实时地执行数字拍摄图像的电子注册，并通过分析整个数字捕获的图像来执行精确和鲁棒的数字图像处理。
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5.发明申请METHOD FOR ACCURATELY FINDING A PHYSICAL LOCATION ON AN IMAGE BEARING SURFACE FOR TONER IMAGES FOR OPTIMAL STREAK CORRECTION 有权用于精确找到图像轴承表面的物理位置的方法用于调色剂图像进行最佳纹理校正公开(公告)号：US20100097621A1
公开(公告)日：2010-04-22
申请号：US12254500
申请日：2008-10-20
IPC分类号： G06K15/02
CPC分类号： G03G15/5033 , G03G15/0131 , G03G15/5054 , G03G2215/00037 , G03G2215/00059 , G03G2215/00759
摘要： A method for determining a location on an image bearing surface of an image printing system where a toner image is to be printed is provided. The method comprises generating a first signal from a detector that is configured to detect a reference mark on the image bearing surface, and a second signal from a clock system that counts. incremental movements of the image bearing surface, determining a first value that correlates the first signal and the second signal, where the first value corresponds to a value of the second signal at a start of characterization of the image bearing surface, and determining a second value using the first value, where the second value provides the location on the image bearing surface where the toner image is to be printed.
摘要翻译： 提供了一种用于确定要打印调色剂图像的图像打印系统的图像承载表面上的位置的方法。 该方法包括从检测器产生第一信号，其被配置为检测图像承载表面上的参考标记，以及来自计数的时钟系统的第二信号。 图像承载表面的增量运动，确定使第一信号和第二信号相关的第一值，其中第一值对应于在图像承载表面的表征开始处的第二信号的值，并且确定第二值 使用第一值，其中第二值提供要在其上打印调色剂图像的图像承载表面上的位置。
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公开(公告)号：US5579418A
公开(公告)日：1996-11-26
申请号：US355443
申请日：1994-12-12
CPC分类号： G06T3/4007
摘要： Method and apparatus for providing interpolated image data from original image data represented in terms of pixels, each pixel defined in terms of value and position in an original image, includes an original image input receiving original image data from an original image source; a page memory operatively connected to the input for storing a page of original image received; a source of interpolation parameters indicating: a slow scan initial pixel value Xinit, a fast scan initial pixel value Yinit, a fast scan x offset value FSx, a fast scan y offset value FSy, a slow scan x offset value SSx, and a slow scan y offset value SSy; a bilinear sequencer calculating for each new pixel, from the received parameters a reference pixel within the image, and a pair of interpolation coefficients for interpolating new pixel values; a memory controller retrieving to an interpolation calculator from the page memory a set of original image pixels including the pixel at the reference position, and three other pixels whose position is a predetermined function of the position of the reference position pixel for each new pixel; and an interpolation calculator calculating a new pixel value as a function of the set of original pixels directed to it by the bilinear sequencer.
摘要翻译： 从根据原始图像中的值和位置定义的每个像素，以从像素表示的原始图像数据提供内插图像数据的方法和装置包括从原始图像源接收原始图像数据的原始图像输入; 页面存储器，其可操作地连接到所述输入端，用于存储接收到的原始图像的页面; 内插参数源，指示：慢速扫描初始像素值Xinit，快速扫描初始像素值Yinit，快速扫描x偏移值FSx，快速扫描y偏移值FSy，慢速扫描x偏移值SSx和慢速扫描 扫描y偏移值SSy; 对于每个新像素，从所接收的参数中计算图像中的参考像素的双线性定序器和用于内插新像素值的一对插值系数; 存储器控制器，从所述页面存储器检索包括所述参考位置处的所述像素的一组原始图像像素，以及位置是每个新像素的所述参考位置像素的位置的预定函数的三个其他像素; 以及插值计算器，计算作为由双线性定序器指向的像素组的函数的新像素值。
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公开(公告)号：US07200285B2
公开(公告)日：2007-04-03
申请号：US10943310
申请日：2004-09-17
申请人： Xing Li , Terri A. Clingerman
发明人： Xing Li , Terri A. Clingerman
CPC分类号： H04N1/3873 , H04N1/3878
摘要： Detecting skew and determining skew angle using the front of a document by determining background-to-document transitions. Incoming scanlines are interval sampled in the fast scan direction every nth pixel. The samples are collected and organized into a two dimension array comprised of scanline based rows and interval based columns. The collected and organized samples are analyzed by intervals to determine a scanline (row) where a specified sampling condition exceeds predetermined threshold. The corresponding row-interval point forms a background-to-medium transition point of the edge of a document. When two or more background-to-medium transition points are found from different intervals the skew angle can be determined using linear regression.
摘要翻译： 通过确定背景到文档的转换，使用文档的正面检测偏斜和确定偏斜角。 进入的扫描线是每第n个像素在快速扫描方向进行间隔采样。 样本被收集并组织成由基于扫描线的行和基于间隔的列组成的二维阵列。 收集和组织的样本以间隔进行分析，以确定指定采样条件超过预定阈值的扫描线（行）。 相应的行间隔点形成文档边缘的背景到中间的转换点。 当从不同的间隔发现两个或多个背景到中间的转换点时，可以使用线性回归来确定偏斜角。
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8.发明授权Apparatus for alignment of video clock with the ROS start of scan sensor signal in printing systems 有权用于在打印系统中将视频时钟与扫描传感器信号的ROS开始对准的装置公开(公告)号：US08325211B2
公开(公告)日：2012-12-04
申请号：US12689541
申请日：2010-01-19
CPC分类号： H04N1/053 , G06K15/1219 , H04N1/1135 , H04N1/12 , H04N2201/02439 , H04N2201/0471 , H04N2201/04732 , H04N2201/04744 , H04N2201/04784 , H04N2201/04794
摘要： Systems and methods are provided for aligning a video clock with the raster output scanner start-of-scan signal in printing systems. A system and method is proposed to align the pixel clock to an asynchronous reference signal generated in the raster output scanner. The proposed system and method adjusts a phase for a static phase value while performing a dynamic phase shifting for the start-of-scan signal alignment.
摘要翻译： 提供了系统和方法，用于将视频时钟与打印系统中的光栅输出扫描器扫描扫描信号对准。 提出了一种系统和方法来将像素时钟对准在光栅输出扫描器中产生的异步参考信号。 所提出的系统和方法调整静态相位值的相位，同时对扫描信号对齐进行动态相移。
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公开(公告)号：US07564593B2
公开(公告)日：2009-07-21
申请号：US10904640
申请日：2004-11-19
申请人： Biruk Gossaye , Nancy R. Kelly , Terri A. Clingerman , Xing Li
发明人： Biruk Gossaye , Nancy R. Kelly , Terri A. Clingerman , Xing Li
CPC分类号： H04N1/00681 , H04N1/0071 , H04N1/00737 , H04N1/00748 , H04N1/0075 , H04N1/1017 , H04N1/193
摘要： A document size identification module receives a single scan of a document and detects for at least one of a black to white transition and a white to black transition. The black to white transition may represent a transition from an overscan area of a platen to a document. The white to black transition may represent a transition from the document to the overscan area of the platen. By detecting at least one of the black to white transition and the white to black transition, the document width may be determined. By determining the document width, the document size may be identified.
摘要翻译： 文档大小识别模块接收文档的单次扫描并检测黑白转换和白黑转换中的至少一个。 黑色到白色的转变可以表示从压板的过扫描区域到文档的转变。 白色到黑色的转变可以表示从文档到压板的过扫描区域的转变。 通过检测黑白转换和白到黑转换中的至少一个，可以确定文档宽度。 通过确定文档宽度，可以识别文档大小。
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公开(公告)号：US06304679B1
公开(公告)日：2001-10-16
申请号：US08297437
申请日：1994-08-29
IPC分类号： G06K936
CPC分类号： H03H17/0202 , G06T5/20
摘要： A structure for implementing a plurality of two-dimensional digital filters, such as finite impulse response filters, in an efficient manner. The structure includes a plurality of first stage filters operating in a first dimension in combination with a single second stage filter, operating in a second dimension. The second stage filter being suitable for receiving output from one of the first stage filters. A controller, operating in conjunction with the first and second stage filters is utilized for controlling the operation of all filters, as well as the selection of the input source for the second stage filter.
摘要翻译： 用于以有效的方式实现多个二维数字滤波器的结构，例如有限脉冲响应滤波器。 该结构包括多个第一级过滤器，其与第二维度中操作的单个第二级过滤器结合操作。 第二级过滤器适于接收来自第一级过滤器之一的输出。 与第一和第二级滤波器一起操作的控制器用于控制所有滤波器的操作以及用于第二级滤波器的输入源的选择。
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