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    Methods and apparatus for generating dither mask through interpolation between preferred patterns
    1.
    发明申请
    Methods and apparatus for generating dither mask through interpolation between preferred patterns 有权
    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。

    GENERATING THRESHOLD VALUES IN A DITHER MATRIX
    2.
    发明申请
    GENERATING THRESHOLD VALUES IN A DITHER MATRIX 有权
    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。

    Method and system for specifying halftone spot shapes
    3.
    发明申请
    Method and system for specifying halftone spot shapes 有权
    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。

    Detecting and compensating for color misregistration produced by a color scanner
    6.
    发明申请
    Detecting and compensating for color misregistration produced by a color scanner 有权
    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。

    Bandless halftone design for multiple beam printers employing non-orthogonal halftones
    7.
    发明申请
    Bandless halftone design for multiple beam printers employing non-orthogonal halftones 失效
    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。