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1. 发明申请

US20050069220A1 Detecting and compensating for color misregistration produced by a color scanner 有权
标题翻译：检测和补偿由彩色扫描仪产生的颜色重合失调
公开(公告)号：US20050069220A1
公开(公告)日：2005-03-31
申请号：US10672234
申请日：2003-09-25
申请人： Joseph Czyszczewski , Hong Li , James Smith , Mikel Stanich , Gerhard Thompson , Chai Wu
发明人： Joseph Czyszczewski , Hong Li , James Smith , Mikel Stanich , Gerhard Thompson , Chai Wu
IPC分类号： G06K9/00 , G06K9/32 , G06K9/40 , H04N1/58
CPC分类号： H04N1/58
摘要： A method, computer program product and system for detecting and compensating for color misregistration. A black/white edge or a solid color edge on a target may be scanned. A black/white edge may refer to a black image, e.g., black text, on a white surrounding background having a rapid spatial transition from black to white. A solid color edge may refer to a solid color image, e.g., solid color text, on a white surrounding background having a rapid spatial transition from color to white. A curve of gray values versus spatial pixel positions for each color channel, e.g., red, green and blue color channels, may be generated. A misregistration error may then be calculated by calculating the offset between the color channel curves. The misregistration error may then be used to calibrate the scanner to compensate for the detected color misregistration.
摘要翻译：一种用于检测和补偿颜色错配的方法，计算机程序产品和系统。可以扫描目标上的黑色/白色边缘或纯色边缘。黑白边缘可以指白色周围背景上的黑色图像，例如黑色文本，其具有从黑色到白色的快速空间转变。纯色边缘可以指在白色周围背景上具有从颜色到白色的快速空间转变的纯色图像，例如纯色文本。可以生成灰度值与每个颜色通道（例如红色，绿色和蓝色通道）的空间像素位置的曲线。然后可以通过计算颜色通道曲线之间的偏移来计算重合失误。然后可能会使用重合失误来校准扫描仪以补偿检测到的颜色重合失调。

2. 发明申请

US20070024911A1 Bandless halftone design for multiple beam printers employing non-orthogonal halftones 失效
标题翻译：使用非正交半色调的多光束打印机的无带半色调设计
公开(公告)号：US20070024911A1
公开(公告)日：2007-02-01
申请号：US11193960
申请日：2005-07-29
申请人： Hong Li , Mikel Stanich , Gerhard Thompson , Chai Wu
发明人： Hong Li , Mikel Stanich , Gerhard Thompson , Chai Wu
IPC分类号： H04N1/405
CPC分类号： H04N1/4055
摘要： A multiple beam printer system having N laser beams receives print job information from a print host. A rendering application uses a threshold array to generate halftone image data from the print job. The threshold array is defined based on a spot function. The defined screen is non-orthogonal and includes Y pels in a direction that is perpendicular to a scanning direction of the laser beams where Y is an integer multiple of N. A distance between screen dots in pels is preferably equal to an integer multiple of N. The screen dot may be defined by a supercell encompassing two screen dots and having an odd number of pels in a direction that is parallel to the scanning direction. The spot function may include a snap feature that snaps a screen dot to the nearest printer grid pel. The spot function may include scaling to compensate for the distortion of the non-orthogonal screen dot.
摘要翻译：具有N个激光束的多光束打印机系统从打印主机接收打印作业信息。渲染应用程序使用阈值阵列从打印作业生成半色调图像数据。基于点函数定义阈值数组。定义的屏幕是非正交的，并且在垂直于激光束的扫描方向的Y方向上包括Y个像素，其中Y是N的整数倍。像素中的屏幕点之间的距离优选等于N的整数倍屏幕点可以由包含两个屏幕点的超细胞定义，并且在平行于扫描方向的方向上具有奇数个像素。斑点功能可以包括将屏幕点捕捉到最近的打印机网格像素的快照特征。点功能可以包括缩放以补偿非正交屏幕点的失真。

3. 发明申请

US20060279787A1 Method and system for designing multilevel halftone screens using spot functions 有权
公开(公告)号：US20060279787A1
公开(公告)日：2006-12-14
申请号：US11149235
申请日：2005-06-10
申请人： Hong Li , Mikel Stanich , Gerhard Thompson , Chai Wu
发明人： Hong Li , Mikel Stanich , Gerhard Thompson , Chai Wu
IPC分类号： G06K15/00 , H04N1/405
CPC分类号： H04N1/4055 , H04N1/40087
摘要： A method and system for generating halftone tables, using a spot function, subdivides the pixels within the halftone cell of a halftone matrix into a plurality of sub-pixels, determines the value of the spot function corresponding to the position of each of the sub-pixels within the halftone matrix, repeats the subdividing and determining for all of the sub-pixels in the halftone matrix, ranks the values for the entire halftone matrix, normalizes the ranked values, generates a cumulative histogram based upon the normalized values, and stores the cumulative histogram as a halftone table.

4. 发明申请

US20060244981A1 System and method for multi-bit halftoning 失效
公开(公告)号：US20060244981A1
公开(公告)日：2006-11-02
申请号：US11117426
申请日：2005-04-29
申请人： Hong Li , Mikel Stanich , Gerhard Thompson , Chai Wu
发明人： Hong Li , Mikel Stanich , Gerhard Thompson , Chai Wu
IPC分类号： G06F15/00
CPC分类号： H04N1/40087
摘要： A method (and system) of multi-bit halftoning includes comparing values of an image to threshold values of a halftone threshold matrix, and generating output values that provide a greater than minimum level of contrast.

5. 发明申请

US20070236743A1 GENERATING THRESHOLD VALUES IN A DITHER MATRIX 有权
标题翻译：在几个矩阵中生成阈值
公开(公告)号：US20070236743A1
公开(公告)日：2007-10-11
申请号：US11278939
申请日：2006-04-06
申请人： Mikel Stanich , Chai Wu , Gerhard Thompson
发明人： Mikel Stanich , Chai Wu , Gerhard Thompson
IPC分类号： G06F15/00
CPC分类号： H04N1/4051
摘要： Provided are a method, system, and program for generating threshold values in a dither matrix. A dither matrix of threshold values is generated. The threshold values in the dither matrix are filtered to generate a filtered dither matrix of filtered dither values by performing for dither values in the dither matrix: determining a region of dither values in the dither matrix that surrounds the value being considered, wherein the dither values in the determined region comprise one of dither values in a first portion of the region within the dither matrix or a wrap around dither value in a second portion of the region that extends beyond the dither matrix; and using an offset value to determine one wrap around dither value, wherein repeated instances of the dither matrix are designed to be applied to an image by forming a tile pattern of the repeated instances of the matrix over the image pattern, and wherein the repeated instances of the matrix in the tile pattern are offset in one direction by the offset value; and performing an operation on the determined dither values in the region to determine a filtered value for the dither value being considered.
摘要翻译：提供了用于在抖动矩阵中生成阈值的方法，系统和程序。产生阈值的抖动矩阵。对抖动矩阵中的阈值进行滤波以通过执行抖动矩阵中的抖动值来执行滤波抖动值的滤波抖动矩阵：确定抖动矩阵中围绕所考虑值的抖动值的区域，其中抖动值在所确定的区域中包括抖动矩阵内的该区域的第一部分中的抖动值中的一个或在延伸超过抖动矩阵的区域的第二部分中的缠绕值抖动值; 以及使用偏移值来确定围绕抖动值的一个包裹，其中所述抖动矩阵的重复实例被设计为通过在所述图像图案上形成所述矩阵的所述重复实例的平铺图案来应用于图像，并且其中所述重复实例在瓦片图案中的矩阵在一个方向上偏移偏移值; 以及对所确定的区域中的抖动值执行操作，以确定被考虑的抖动值的滤波值。

6. 发明申请

US20050275898A1 Method and system for specifying halftone spot shapes 有权
标题翻译：用于指定半色调斑点形状的方法和系统
公开(公告)号：US20050275898A1
公开(公告)日：2005-12-15
申请号：US10868047
申请日：2004-06-15
申请人： Huy Nguyen , Mikel Stanich , Gerhard Thompson , Chai Wu
发明人： Huy Nguyen , Mikel Stanich , Gerhard Thompson , Chai Wu
IPC分类号： H04N1/405
CPC分类号： H04N1/4055
摘要： A halftone spot function, for determining a shape of a halftone spot as a function of the intensity of an image being printed, is generated by creating one or two line segments forming a part of the shape of the spot function or by creating a number of contour lines that are interpolated to form the function. A halftone spot pattern is generated as a number of supercells, each of which includes a number of halftone spots, each defined within a halftone spot cell by a halftone spot function, with the supercell being defined to include a number of device pixels, each of which is fully inked of left without ink, a number of spot cells in each direction, and offset distance establishing angles of the lines dividing the spot cells from one another.
摘要翻译：通过产生形成点功能的形状的一部分的一个或两个线段或者通过创建一些数量的网点来产生用于确定作为被打印的图像的强度的函数的半色调点的形状的半色调点功能内插的轮廓线形成功能。产生半色调点图案作为多个超单元，每个超单元包括多个半色调点，每个半色调点通过半色调点功能在半色调点单元内定义，超单元被定义为包括多个设备像素，每个其中没有油墨的是完全墨水，在每个方向上的多个光点单元以及将光点彼此分开的线的偏移距离建立角度。

7. 发明申请

US20050275900A1 Methods and apparatus for generating dither mask through interpolation between preferred patterns 有权
标题翻译：用于通过优选图案之间的插值产生抖动掩模的方法和装置
公开(公告)号：US20050275900A1
公开(公告)日：2005-12-15
申请号：US10856470
申请日：2004-05-28
申请人： Mikel Stanich , Gerhard Thompson , Charles Tresser , Chai Wu
发明人： Mikel Stanich , Gerhard Thompson , Charles Tresser , Chai Wu
IPC分类号： H04N1/405 , H04N1/409 , H04N1/52
CPC分类号： H04N1/4051
摘要： Techniques for generating dither masks are provided. A dither mask is generated by selecting a sequence of at least three original patterns comprising pixels of at least one of a first color and a second color. At least two patterns are interpolated to generate interpolated patterns in the sequence between the at least three original patterns. If a pattern having at least one specified characteristic exists in the sequence, the steps of interpolating between at least two patterns, and determining if a pattern having at least one specified characteristic exists in the sequence, are repeated. The interpolation is between at least one pattern from each side of the pattern having at least one specified characteristic in the sequence.
摘要翻译：提供了产生抖动掩模的技术。通过选择至少三个包括第一颜色和第二颜色中的至少一个的像素的原始图案的序列来生成抖动掩模。内插至少两个图案以在至少三个原始图案之间的序列中生成插值图案。如果序列中存在至少一个特定特征的图案，则重复在至少两个图案之间进行内插并确定序列中是否存在具有至少一个特定特征的图案的步骤。该插值位于具有序列中至少一个指定特征的图案的每侧的至少一个图案之间。

8. 发明申请

US20050157906A1 Method and system for embedding an image into two other images 有权
标题翻译：将图像嵌入其他图像的方法和系统
公开(公告)号：US20050157906A1
公开(公告)日：2005-07-21
申请号：US10758536
申请日：2004-01-16
申请人： Mikel Stanich , Gerhard Thompson , Chai Wu
发明人： Mikel Stanich , Gerhard Thompson , Chai Wu
IPC分类号： G06K9/00 , G06T1/00 , H04N1/32 , H04N1/405 , H04N1/60
CPC分类号： G06T1/0021 , G06T2201/0051 , H04N1/32144 , H04N1/32256 , H04N1/405 , H04N1/6058
摘要： A method and system embeds an image into two images by performing a digital halftoning process on a Cartesian product of color spaces.
摘要翻译：方法和系统通过对颜色空间的笛卡尔乘积执行数字半色调处理将图像嵌入到两个图像中。

9. 发明申请

US20070165284A1 System and method for content based color scanning optimized enhancement using a localized approach 审中-公开
标题翻译：使用本地化方法的基于内容的彩色扫描优化增强的系统和方法
公开(公告)号：US20070165284A1
公开(公告)日：2007-07-19
申请号：US11333567
申请日：2006-01-17
申请人： Hong Li , Gerhard Thompson , Chai Wu
发明人： Hong Li , Gerhard Thompson , Chai Wu
IPC分类号： H04N1/409
CPC分类号： H04N1/40062 , H04N1/409
摘要： A method and system of processing a document, includes analyzing a characteristic of a first pixel in a document and at least one second pixel positioned near the first pixel, classifying a value of the first pixel in accordance with the analysis, and modifying the value of the first pixel based upon the classification.
摘要翻译：一种处理文件的方法和系统，包括：分析文档中的第一像素的特性和位于第一像素附近的至少一个第二像素，根据分析对第一像素的值进行分类，并修改基于分类的第一个像素。

10. 发明申请

US20060082843A1 Method and system for calibration and characterization of joint nonlinear and linear transformations for a color input or output device 审中-公开
标题翻译：用于颜色输入或输出设备的联合非线性和线性变换的校准和表征的方法和系统
公开(公告)号：US20060082843A1
公开(公告)日：2006-04-20
申请号：US10963641
申请日：2004-10-14
申请人： Hong Li , Gerhard Thompson , Chai Wu
发明人： Hong Li , Gerhard Thompson , Chai Wu
IPC分类号： H04N1/46
CPC分类号： H04N1/603
摘要： A method and system for calibrating a color input or output device by simultaneously solving non-linear and linear transformations includes minimizing any error between two sets of corresponding data set of the color device.
摘要翻译：通过同时求解非线性和线性变换来校准彩色输入或输出设备的方法和系统包括最小化彩色设备的两组对应数据集之间的任何误差。

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