公开(公告)号：US07414757B2

公开(公告)日：2008-08-19

申请号：US10674837

申请日：2003-09-30

申请人： George L. Eldridge ,  Peter A. Crean ,  Jon S. McElvain ,  William E. Nelson

发明人： George L. Eldridge ,  Peter A. Crean ,  Jon S. McElvain ,  William E. Nelson

IPC分类号： H04N1/41 ,  H04N1/413 ,  H04N1/403 ,  H04N1/407 ,  H04N1/409 ,  H04N1/405 ,  G05B13/00 ,  G06T1/60 ,  G06K15/02

CPC分类号： H04N1/40

摘要： There is disclosed in embodiments methods relating to the compression of printing hints. The method in embodiments generates a first set of image pixels having corresponding printing hints. The printing hints are then adjusted to produce a second set of image pixels processed in such a way that an end printed result is visually equivalent to a printed result using the first set of image pixels thereby reducing the entropy in the printing hints. The method improves the compression ratio of an image using printing hints by adjusting the printing hints of pixels that are zero or fully saturated. The printing hints are adjusted in such a way to reduce the complexity of the printing hints.

摘要翻译： 在实施例中公开了与打印提示的压缩有关的方法。 实施例中的方法生成具有相应打印提示的第一组图像像素。 然后调整打印提示以产生第二组图像像素，其以这样的方式处理，使得结束打印结果在视觉上等同于使用第一组图像像素的打印结果，从而减少打印提示中的熵。 该方法通过调整零或完全饱和的像素的打印提示来提高使用打印提示的图像的压缩比。 打印提示以这种方式进行调整，以减少打印提示的复杂性。

公开(公告)号：US07382494B2

公开(公告)日：2008-06-03

申请号：US10608802

申请日：2003-06-27

申请人： Jon S. McElvain

发明人： Jon S. McElvain

IPC分类号： G06K15/02 ,  H04N1/409 ,  H04N1/40

CPC分类号： H04N1/58 ,  G06K15/02

摘要： A method of improving edge rendering of objects includes dilation (or contraction) of an object's tag plane by one or more pixels into the surrounding region, with the adjacent tag region having a corresponding contraction (or dilation). The objects of interest (e.g., white text) are first identified; the corresponding object tag plane is then spread or choked, in a fashion analogous to trapping. In the case of negative text on a tint background, by expanding the tag plane for the negative text object, the text hint would be forced one pixel into the tint object plane everywhere along the perimeter of the negative text. This could then enable greatly improved negative text rendering.

摘要翻译： 改善对象的边缘渲染的方法包括通过一个或多个像素将对象的标签平面扩展（或收缩）到周围区域中，相邻的标签区域具有相应的收缩（或扩张）。 首先识别感兴趣的对象（例如，白色文本）; 然后以类似于捕获的方式将相应的对象标签平面展开或扼制。 在淡色背景上的负文本的情况下，通过扩展负文本对象的标签平面，文本提示将强制一个像素沿着负文本的周边的任何地方的色调对象平面。 这样可以大大改善负文本渲染。

公开(公告)号：US07295346B2

公开(公告)日：2007-11-13

申请号：US10601686

申请日：2003-06-23

申请人： Robert P. Loce ,  Jon S. McElvain

发明人： Robert P. Loce ,  Jon S. McElvain

IPC分类号： G06K15/00

CPC分类号： H04N1/4092 ,  G06T5/002 ,  G06T2200/12 ,  G06T2207/30176 ,  H04N1/409 ,  H04N1/58

摘要： Methods and apparatus for antialiasing images that contain one or more image objects such as colored text, line art, and graphical objects, such that the edge pixels of an antialiased image object will exhibit relatively uniform values, and the appearance of the image object is thereby improved. In one embodiment, an improved antialiasing filter is employed to detect at least one region within the received image. Upon detecting a region containing a background image level that adjoins an image object having pixel values in a range other than a range of limit values, the antialiasing filter sets the pixel values of the edge or border pixels of the image object to substantially the same value. Selection among a logical filter operation and an averaging filter operation may be adaptively employed in the antialiasing filter in order to obtain the desired uniformity of pixel values.

摘要翻译： 用于对包含一个或多个图像对象（例如彩色文本，线条图形和图形对象）的图像进行抗锯齿的方法和装置，使得抗锯齿图像对象的边缘像素将呈现相对均匀的值，并且因此图像对象的外观 改进。 在一个实施例中，采用改进的抗混叠滤波器来检测接收到的图像内的至少一个区域。 在检测到包含与限制值范围以外的范围内的像素值相邻的背景图像级别的区域时，抗锯齿滤波器将图像对象的边缘或边界像素的像素值设定为基本相同的值 。 可以在抗混叠滤波器中自适应地采用逻辑滤波器操作和平均滤波器操作之间的选择，以便获得期望的像素值的均匀性。

公开(公告)号：US20080170280A1

公开(公告)日：2008-07-17

申请号：US11653800

申请日：2007-01-16

申请人： Shen-Ge Wang ,  Charles Michael Hains ,  Jon S. McElvain

发明人： Shen-Ge Wang ,  Charles Michael Hains ,  Jon S. McElvain

IPC分类号： H04N1/46

CPC分类号： G03G15/0115 ,  G03G15/50 ,  G03G2215/0161

摘要： A method and system for estimating color separation misregistration of a printing system. The method may include marking a substrate to form a misregistration estimation patch. The misregistration estimation patch being formed by first and second color separations. The first color separation marking the substrate with a first halftone pattern. The first halftone pattern has a first halftone-frequency vector in a first direction and a second halftone-frequency vector in a second direction. The second color separation marking the substrate with a second halftone pattern. The second halftone pattern has a first halftone-frequency vector in a first direction and a second halftone-frequency vector in a second direction. The first and second halftone patterns form a moiré pattern. A deviation in at least one the halftone frequency vectors and/or the moiré pattern can be indicative of a color separation misregistration. The method also includes estimating the color separation misregistration of the printing system using the misregistration estimation patch.

摘要翻译： 一种用于估计打印系统的颜色分离不对准的方法和系统。 该方法可以包括标记底物以形成不对准估计贴片。 不对准估计贴片由第一和第二分色形成。 用第一半色调图案标记基板的第一分色。 第一半色调图案具有第一方向的第一半色调频率矢量和第二方向上的第二半色调频率矢量。 用第二半色调图案标记衬底的第二颜色分离。 第二半色调图案具有第一方向的第一半色调频率矢量和第二方向上的第二半色调频率矢量。 第一和第二半色调图案形成莫尔图案。 至少一个半色调频率向量和/或莫尔图案的偏差可以指示颜色分离重合失调。 该方法还包括使用不对准估计贴片估计打印系统的颜色分离不对准。

公开(公告)号：US07236267B2

公开(公告)日：2007-06-26

申请号：US10607941

申请日：2003-06-27

申请人： Jon S. McElvain

发明人： Jon S. McElvain

IPC分类号： G06F15/00

CPC分类号： H04N1/6072 ,  H04N1/32128 ,  H04N2201/3242

摘要： A method for selecting which rendering hint or tag to use when multiple tags may be associated with a pixel, includes prioritizing the set of input tags associated with an input image, such that each input tag has a unique priority relative to other input tags in the set; filtering the input image by selecting groups of input pixels, applying a filtering function to the contone data associated with each selected group of input pixels, and producing an output pixel having an output contone data for each selected group of input pixels; for each selected group of input pixels, comparing the priorities of the input tags associated with the selected group of input pixels and selecting as the output tag associated with the output pixel, that tag with the highest priority.

摘要翻译： 一种用于选择当多个标签可能与像素相关联时使用的呈现提示或标签的方法，包括对与输入图像相关联的输入标签集进行优先级排序，使得每个输入标签相对于其中的其他输入标签具有唯一的优先级 组; 通过选择输入像素组来对输入图像进行滤波，对与每个选择的输入像素组相关联的连续色调数据应用滤波函数，以及产生具有每个所选择的输入像素组的输出连续词数据的输出像素; 对于每个所选择的输入像素组，比较与所选择的输入像素组相关联的输入标签的优先级，并选择具有最高优先级的该标签与输出像素相关联的输出标签。

公开(公告)号：US07826095B2

公开(公告)日：2010-11-02

申请号：US11653800

申请日：2007-01-16

申请人： Shen-Ge Wang ,  Charles Michael Hains ,  Jon S. McElvain

发明人： Shen-Ge Wang ,  Charles Michael Hains ,  Jon S. McElvain

IPC分类号： H04N1/40 ,  G06K9/34

CPC分类号： G03G15/0115 ,  G03G15/50 ,  G03G2215/0161

摘要： A method and system for estimating color separation misregistration of a printing system. The method may include marking a substrate to form a misregistration estimation patch. The misregistration estimation patch being formed by first and second color separations. The first color separation marking the substrate with a first halftone pattern. The first halftone pattern has a first halftone-frequency vector in a first direction and a second halftone-frequency vector in a second direction. The second color separation marking the substrate with a second halftone pattern. The second halftone pattern has a first halftone-frequency vector in a first direction and a second halftone-frequency vector in a second direction. The first and second halftone patterns form a moiré pattern. A deviation in at least one the halftone frequency vectors and/or the moiré pattern can be indicative of a color separation misregistration. The method also includes estimating the color separation misregistration of the printing system using the misregistration estimation patch.

摘要翻译： 一种用于估计打印系统的颜色分离不对准的方法和系统。 该方法可以包括标记底物以形成不对准估计贴片。 不对准估计贴片由第一和第二分色形成。 用第一半色调图案标记基板的第一分色。 第一半色调图案具有第一方向的第一半色调频率矢量和第二方向上的第二半色调频率矢量。 用第二半色调图案标记衬底的第二颜色分离。 第二半色调图案具有第一方向的第一半色调频率矢量和第二方向上的第二半色调频率矢量。 第一和第二半色调图案形成莫尔图案。 至少一个半色调频率向量和/或莫尔图案的偏差可以指示颜色分离重合失调。 该方法还包括使用不对准估计贴片估计打印系统的颜色分离不对准。

公开(公告)号：US07339701B2

公开(公告)日：2008-03-04

申请号：US10320832

申请日：2002-12-16

申请人： Jon S. McElvain

发明人： Jon S. McElvain

IPC分类号： H04N1/50 ,  H04N1/58

CPC分类号： H04N1/58

摘要： A method for correcting for edge defects caused by print characteristics of a print engine includes printing a set of actual color patches corresponding to a desired set of colors; defining an edge region and a uniform area region in each of the patches; for each color patch in the set of actual color patches: determining a difference between color in the edge region of the patch and color in the uniform area region of the patch; and generating an edge response to adjust color output of the print engine in the edge region to substantially match color output in the uniform area region. The method can perform edge correction for any edge region of an image. In one embodiment of the invention, the edge region may be determined by a trap engine associated with the print engine and the method can provide correction for trap pixels.

摘要翻译： 一种用于校正由打印引擎的打印特性引起的边缘缺陷的方法，包括：打印与期望的一组颜色对应的一组实际色标; 在每个所述贴片中限定边缘区域和均匀区域区域; 对于实际色块集合中的每个色块：确定补丁边缘区域中的颜色和补丁的均匀区域区域中的颜色之间的差异; 以及产生边缘响应，以调整边缘区域中的打印引擎的颜色输出，以基本上匹配均匀区域区域中的颜色输出。 该方法可以对图像的任何边缘区域执行边缘校正。 在本发明的一个实施例中，边缘区域可以由与打印引擎相关联的陷阱引擎来确定，并且该方法可以为陷波像素提供校正。

公开(公告)号：US06844942B2

公开(公告)日：2005-01-18

申请号：US10263534

申请日：2002-10-02

申请人： David E. Rumph ,  Jon S. McElvain ,  Jared Boone

发明人： David E. Rumph ,  Jon S. McElvain ,  Jared Boone

IPC分类号： H04N1/58 ,  G06F15/00

CPC分类号： H04N1/58

摘要： A method of correction for toner misregistration in color printing systems, specifically for run length encoded image data. This method, called “trapping”, usually involves extending the color separations one or more pixels to overlay the edge. The color of the “trap zone” is chosen such that it is nearly imperceptible in the presence of the two initial colors. Our approach assumes the existence of a “trap generator”, which provides a trap color given two input colors.In run length encoded image format, the image is comprised of an array of “scanlines”, consisting of a string of “runs” that are specified by a minimum position in the fast (horizontal) direction, a length, and a color. We describe a method of trapping involving the following steps: 1) inspecting the run lengths in each scanline to determine the color edges of the image; 2) sending the colors at the boundaries to the trap generator to determine the trap color; and 3) modifying the intersecting runs with the trap color. The result is an efficient elimination of the edge defects at color boundaries, which is enabled by the run length encoded image format.

摘要翻译： 用于彩色打印系统中的调色剂重合失调的方法，特别是用于游程长度编码的图像数据。 这种称为“捕获”的方法通常涉及将颜色分离扩展到一个或多个像素以覆盖边缘。 选择“陷阱区”的颜色，使得在存在两种初始颜色的情况下几乎不可察觉。 我们的方法假设存在一个“陷阱生成器”，它提供给定两种输入颜色的陷阱颜色。在运行长度编码图像格式中，图像由“扫描线”阵列组成，由“运行” 由快（水平）方向，长度和颜色的最小位置指定。 我们描述一种捕获的方法，涉及以下步骤：1）检查每条扫描线中的行程长度以确定图像的颜色边缘; 2）将边界的颜色发送到陷阱发生器以确定陷阱颜色; 和3）用陷阱颜色修改相交行程。 结果是有效消除了颜色边界处的边缘缺陷，这是通过游程长度编码图像格式实现的。

公开(公告)号：US07710609B2

公开(公告)日：2010-05-04

申请号：US11135742

申请日：2005-05-24

申请人： Jon S. McElvain

发明人： Jon S. McElvain

IPC分类号： G06F15/00 ,  G06K9/36

CPC分类号： H04N1/58

摘要： Method and system embodiments herein add at least one trap area between abutting objects on an image to be printed by a printing engine. This trap area includes a central region between two outer regions. The method/system establishes a target toner concentration for pixels within the trap area based on toner concentrations of the abutting objects and corrects the target toner concentration to account for irregularities of the outer regions of the trap area to produce a corrected toner concentration for pixels in the trap area. The method/system performs this correction by first empirically testing the printing engine to establish a lookup table of correction values of the outer regions prior to a printing operation. Then, during the printing operation, the method determines a size relationship (weighting) between the central region and the outer regions for the trap area and calculates the corrected toner concentration.

摘要翻译： 本文的方法和系统实施例在由打印引擎打印的图像上的邻接对象之间添加至少一个陷阱区域。 该陷阱区域包括两个外部区域之间的中心区域。 方法/系统基于邻接物体的调色剂浓度建立陷阱区域内的像素的目标调色剂浓度，并校正目标调色剂浓度以解决陷阱区域的外部区域的不规则性，以产生校正的调色剂浓度 陷阱区。 该方法/系统通过首先经验地测试打印引擎以在打印操作之前建立外部区域的校正值的查找表来执行该校正。 然后，在打印操作期间，该方法确定陷阱区域的中心区域和外部区域之间的尺寸关系（加权），并计算校正的调色剂浓度。

公开(公告)号：US07688473B2

公开(公告)日：2010-03-30

申请号：US10973725

申请日：2004-10-26

申请人： Connie F. Purdum ,  Robert P. Loce ,  Beilei Xu ,  David J. Lieberman ,  Mark A. Gwaltney ,  Jon S. McElvain ,  Charles M. Hains

发明人： Connie F. Purdum ,  Robert P. Loce ,  Beilei Xu ,  David J. Lieberman ,  Mark A. Gwaltney ,  Jon S. McElvain ,  Charles M. Hains

IPC分类号： H04N1/409

CPC分类号： H04N1/4092 ,  H04N1/4058

摘要： Disclosed herein is an image processing method for producing enhanced halftone edges, particularly suited to those edges which only lie upon the background as apposed to those edges which abut other halftone screens. It utilizes a step of defining border pixels and a step of halftoning those border pixels in a different manner than the halftoning applied to the interior region of the tint or image segment. The preferred halftone for the border pixels will be related to the interior halftone by some number of common spatial frequency harmonics. Examples of common-harmonic screening for an edge include, but are not limited to: (a) same screen with different tone reproduction characteristics (boosted edge values); (b) same screen angles and frequencies with a different spot function, possibly phase shifted; (c) a dot screen whose frequency vectors can be generated by the frequency vectors of the interior screen; (d) a line screen whose frequency vectors can be generated by the frequency vectors of the interior screen. This generation process is directed to ensuring that the two screens will be “harmonically matched” where at least one of the fundamental frequency vectors and harmonics of the first screen will equal at least one of the fundamental frequency vectors and harmonics of the second screen.

摘要翻译： 本文公开了一种用于生产增强的半色调边缘的图像处理方法，特别适合于仅靠在与其它半色调屏幕相邻的那些边缘上的背景的那些边缘。 它利用定义边框像素的步骤和以与应用于色调或图像片段的内部区域的半色调不同的方式对这些边界像素进行半色调的步骤。 用于边框像素的优选半色调将通过若干数量的共同空间频率谐波与内部半色调相关。 用于边缘的共谐波筛选的示例包括但不限于：（a）具有不同色调再现特性（增强边缘值）的相同屏幕; （b）具有不同光点功能的相同屏幕角度和频率，可能相移; （c）可以通过内部画面的频率矢量生成频率矢量的点画面; （d）可以通过内部画面的频率矢量生成其频率矢量的行画面。 该生成处理旨在确保两个屏幕将被“谐波匹配”，其中基本频率矢量和第一屏幕的谐波中的至少一个将等于第二屏幕的基本频率矢量和谐波中的至少一个。