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1. 发明授权

US08787653B2 Determining an orientation direction of a color edge at a pixel location in a color image 有权
标题翻译：确定彩色图像中的像素位置处的颜色边缘的取向方向
公开(公告)号：US08787653B2
公开(公告)日：2014-07-22
申请号：US13426203
申请日：2012-03-21
申请人： Xing Li , Meng Yao , Barbara L. Farrell
发明人： Xing Li , Meng Yao , Barbara L. Farrell
IPC分类号： G06K9/00
CPC分类号： H04N1/58 , G06T1/20
摘要： What is disclosed is a system and method for determining an orientation direction of a color edge at a given pixel location in a binary color image. The orientation direction of the color edge is determined from eight pixel counts with each pixel count being a total number of pixels in each of eight regions of a window centered about a candidate pixel which resides along the color edge. The eight regions are associated with 8 compass points. The orientation of the edge is determined by a 1st, 2nd and 3rd tier control bits which are based upon the pixel counts of each region. The 1st, 2nd and 3rd tier control bits collectively form a 3-bit word. The 3-bit word defines the orientation direction. The teachings hereof provide an efficient way of performing binary edge orientation detection by making uses of intermediate results to simultaneously encode the edge orientation.
摘要翻译：所公开的是用于确定二值彩色图像中的给定像素位置处的颜色边缘的取向方向的系统和方法。颜色边缘的取向方向由八个像素计数确定，每个像素数量是围绕沿着颜色边缘驻留的候选像素的中心的窗口的八个区域的每个区域中的像素总数。八个区域与8个罗盘点相关联。边缘的方向由基于每个区域的像素计数的第一，第二和第三层控制位确定。第1，第2和第3层控制位一起形成3位字。 3位字定义方向。本发明的教导提供了一种通过利用中间结果同时编码边缘取向来执行二进制边缘取向检测的有效方法。

2. 发明授权

US08611671B2 Thin line detection and enhancement for electronic images having different resolutions 有权
标题翻译：具有不同分辨率的电子图像的细线检测和增强
公开(公告)号：US08611671B2
公开(公告)日：2013-12-17
申请号：US12841663
申请日：2010-07-22
申请人： Meng Yao , Xing Li
发明人： Meng Yao , Xing Li
IPC分类号： G06K9/46
CPC分类号： H04N1/4092 , G06K15/1874
摘要： A methodology for thin line detection and enhancement in electronic images is disclosed. The methodology includes associating an electronic image with at least one basic context window that is less than the size of the electronic image based on the input image resolution of the electronic image; detecting one or more predefined patterns which correspond to thin lines in the electronic image using the at least one basic context window; excluding patterns for the one or more detected patterns which are halftone patterns; and adding at least one pixel to the electronic image based on at least one of the remaining patterns so as to enhance thin line features in the electronic image. In some implementation, the methodology may be configured to handle electronic images having different resolutions. A system for thin line detection and enhancement in electronic images having different resolutions is also disclosed.
摘要翻译：公开了一种用于电子图像中细线检测和增强的方法。该方法包括基于电子图像的输入图像分辨率将电子图像与至少一个小于电子图像大小的基本上下文窗口相关联; 使用所述至少一个基本上下文窗口来检测对应于所述电子图像中的细线的一个或多个预定义模式; 排除作为半色调图案的一个或多个检测图案的图案; 以及基于所述剩余图案中的至少一个向所述电子图像添加至少一个像素，以便增强所述电子图像中的细线特征。在一些实现中，该方法可以被配置为处理具有不同分辨率的电子图像。还公开了一种用于具有不同分辨率的电子图像中的细线检测和增强的系统。

3. 发明授权

US08340396B2 Color trapping on a halftoned bi-level bitmap 有权
标题翻译：半色调双层位图上的色彩捕捉
公开(公告)号：US08340396B2
公开(公告)日：2012-12-25
申请号：US12754096
申请日：2010-04-05
申请人： Meng Yao
发明人： Meng Yao
IPC分类号： G06K9/00
CPC分类号： H04N1/58
摘要： What is disclosed is a novel system and method for determining whether a pixel resides along a two-color edge in a halftoned bi-level bitmap. In one embodiment, a bitmap having a plurality of colored pixels is received. For each pixel in the bitmap, a window of size n×m is defined centered on the current pixel. The window is partitioned into a plurality of regions with each region having an orientation direction with each orientation direction having an associated numeric value. A number of pixels are counted for each of the first and second colors in each of the associated orientation directions. A determination is made as to the respective orientation direction having the maximum and minimum pixel counts for each of the first and second colors. Thereafter, a determination is made whether the pixel resides along a two color edge based upon the max/min counts and each associated orientation direction.
摘要翻译：公开的是用于确定像素是否沿着半色调双级位图中的双色边缘驻留的新颖系统和方法。在一个实施例中，接收具有多个彩色像素的位图。对于位图中的每个像素，大小为n×m的窗口以当前像素为中心定义。窗口被划分为多个区域，每个区域具有取向方向，每个取向方向具有相关联的数值。对于相关联的取向方向中的每一个，对于第一颜色和第二颜色中的每一个计数多个像素。对于第一颜色和第二颜色中的每一个，确定具有最大和最小像素数的相应取向方向。此后，基于最大/最小计数和每个相关联的取向方向，确定像素是沿着两个颜色边缘驻留的。

4. 发明授权

US07880930B2 Reducing printhead process color non-uniformities in a direct marking device 有权
标题翻译：在直接打标设备中减少打印头处理颜色不均匀性
公开(公告)号：US07880930B2
公开(公告)日：2011-02-01
申请号：US12122762
申请日：2008-05-19
申请人： Yeqing Zhang , Howard A. Mizes , Meng Yao , Susan J. Zoltner
发明人： Yeqing Zhang , Howard A. Mizes , Meng Yao , Susan J. Zoltner
IPC分类号： H04N1/60 , H04N1/46 , G03F3/08 , G06K9/00 , G06K9/40
CPC分类号： H04N1/58
摘要： What is disclosed is a novel system and method for reducing process color banding due to printhead non-uniformities in a direct marking device. In one example, a first measurement of a printhead spatial non-uniformity is obtained along a first line in a color space which produces a spatial uniformity when a target primary color is printed alone. A first spatial tone reproduction curve is generated. A second measurement of the printhead spatial non-uniformity is obtained along a second line in color space in a coverage area of a process color which maximally changes a halftone structure of the target primary color. A second spatial TRC is generated. The first and second spatial TRCs are combined using a weighted average which balances the primary and process colors. A modified spatial TRC is generated. The printhead is adjusted at a location of the target primary color according to the modified spatial TRC.
摘要翻译：公开的是一种用于在直接标记装置中由于打印头不均匀性而减少处理颜色带的新型系统和方法。在一个示例中，当单独打印目标原色时，沿着产生空间均匀性的颜色空间中的第一行获得打印头空间不均匀性的第一测量。产生第一空间色调再现曲线。在最大程度上改变目标原色的半色调结构的处理颜色的覆盖区域中，沿色彩空间中的第二行获得打印头空间不均匀性的第二测量。产生第二空间TRC。第一和第二空间TRC使用平衡主要和过程颜色的加权平均数进行组合。生成修改后的空间TRC。根据改进的空间TRC，将打印头调整到目标原色的位置。

5. 发明授权

US07717532B2 Systems and methods that improve fluid color output by using clear or white fluid 有权
标题翻译：通过使用透明或白色液体改善流体颜色输出的系统和方法
公开(公告)号：US07717532B2
公开(公告)日：2010-05-18
申请号：US11275664
申请日：2006-01-23
申请人： Stephen M. Kroon , Meng Yao , Augustus J. Rogers, IV
发明人： Stephen M. Kroon , Meng Yao , Augustus J. Rogers, IV
IPC分类号： B41J2/205
CPC分类号： B41J2/17593 , H04N1/54
摘要： An imaging system that forms an image on a receiving medium including a fluid ejector that ejects fluid onto the receiving medium and a controller that controls the fluid ejector to eject the fluid to include a non-white and non-clear fluid or one of at least white and clear W fluid on each pixel on the receiving medium. A substantially single layer of fluid is ejected onto the receiving medium. A method for forming an image on a receiving medium includes ejecting a fluid onto the receiving medium, and controlling the ejection of the fluid to include a non-white and non-clear fluid or one of at least white and clear fluid for each pixel on the receiving medium.
摘要翻译：一种在接收介质上形成图像的成像系统，包括将流体喷射到接收介质上的流体喷射器，以及控制器，其控制流体喷射器喷射流体以包括非白色和非透明流体或至少白色和透明的W液体在接收介质上的每个像素上。将基本上单层的流体喷射到接收介质上。用于在接收介质上形成图像的方法包括将流体喷射到接收介质上，并且控制流体的喷射以包括非白色和非透明流体或者每个像素上的至少白色和透明流体之一接收介质。

6. 发明授权

US07375849B2 Balancing grays on color printers 有权
标题翻译：在彩色打印机上平衡灰度
公开(公告)号：US07375849B2
公开(公告)日：2008-05-20
申请号：US10270992
申请日：2002-10-15
申请人： Meng Yao , Martin S. Maltz
发明人： Meng Yao , Martin S. Maltz
IPC分类号： G06F15/00 , G06K1/00 , H04N1/60
CPC分类号： H04N1/6027
摘要： A gray balancing technique wherein gray balancing curves are determined by interpolating the primary color data values of color samples to determine discrete combinations of primary colors that substantially match predetermined targets, and performing a curve fitting procedure on the discrete combinations of primary colors to produce gray balancing curves.
摘要翻译：一种灰度平衡技术，其中通过内插颜色样本的原色数据值来确定基本匹配预定目标的原色的离散组合并且对原色的离散组合执行曲线拟合程序以产生灰度平衡来确定灰平衡曲线曲线。

7. 发明申请

US20060061782A1 Calibration of color devices 失效
标题翻译：彩色设备的校准
公开(公告)号：US20060061782A1
公开(公告)日：2006-03-23
申请号：US10945600
申请日：2004-09-20
申请人： Meng Yao
发明人： Meng Yao
IPC分类号： H04N1/60
CPC分类号： H04N1/6022 , H04N1/6027
摘要： A method of adjusting a non-black primary color value including determining first, second and third portions of the non-black primary color value; determining a first contribution using a first one-dimensional look-up table and the first portion, wherein the primary color value is used as an index to the first one-dimensional look-up table; determining a second contribution using a second one-dimensional look-up table and the second portion, wherein the primary color value is used as an index to the second one-dimensional look-up table; determining a third contribution using a third one-dimensional look-up table and the third portion, wherein the primary color value is used as an index to the third one-dimensional look-up table; and summing the first, second and third contributions.
摘要翻译：一种调整非黑色原色值的方法，包括确定非黑色原色值的第一，第二和第三部分; 使用第一一维查找表和第一部分确定第一贡献，其中所述主色值被用作对所述第一一维查找表的索引; 使用第二一维查找表和所述第二部分确定第二贡献，其中所述主色值被用作所述第二一维查找表的索引; 使用第三个一维查找表和第三部分确定第三贡献，其中主色值被用作第三个一维查找表的索引; 并总结了第一，第二和第三份的贡献。

8. 发明申请

US20050151788A1 Color printing 有权
标题翻译：彩色印刷
公开(公告)号：US20050151788A1
公开(公告)日：2005-07-14
申请号：US10756058
申请日：2004-01-12
申请人： Meng Yao , Mark Parker
发明人： Meng Yao , Mark Parker
IPC分类号： B41J2/21 , B41J2/52 , H04N1/52 , H04N1/60
CPC分类号： H04N1/52
摘要： A method of printing including replacing each of black dots of a first subset of black dots of a bit map for a predetermined area with a process black dot, adding a non-black dot to each of black dots of a second subset of black dots of the bit-mapped data, and printing the bit map.
摘要翻译：一种打印方法，包括用处理黑点代替预定区域的位图的黑点的第一子集中的每个黑点，将非黑点添加到黑点的第二子集的黑点中位映射数据，并打印位图。

9. 发明授权

US06250733B1 Color printer halftoning method 有权
标题翻译：彩色打印机半色调方式
公开(公告)号：US06250733B1
公开(公告)日：2001-06-26
申请号：US09198024
申请日：1998-11-23
申请人： Meng Yao , Stephen M. Kroon
发明人： Meng Yao , Stephen M. Kroon
IPC分类号： B41J2205
CPC分类号： H04N1/52 , H04N1/56
摘要： A method of operating a printing system that can print any of several different colors onto a point on a sheet of printer media. The method includes using a halftoning screen with a matrix of assorted threshold values, along with image data having a matrix of image data elements. For each data element and each color, a density value is determined to establish the amount of each color needed to produce the color associated with the original data element. Then a calculation determines which of the colors will be printed to the particular location. In a selected sequence of colors, density values of the colors are added one by one to generate a density sum that increases until it exceeds the threshold value. The last color added, which caused the sum to exceed the threshold, is then printed to the media sheet at a corresponding point. The system may employ a high frequency blue noise screen, and may operate to print droplets of more colors than the number of ink colors by printing secondary color dots formed of two or more different color ink, as well as single color dots.
摘要翻译：一种操作打印系统的方法，该打印系统可以将多种不同颜色的任何一种打印到一张打印机介质上的一个点上。该方法包括使用具有各种阈值的矩阵的半色调屏幕，以及具有图像数据元素的矩阵的图像数据。对于每个数据元素和每种颜色，确定密度值以建立产生与原始数据元素相关联的颜色所需的每种颜色的量。然后计算确定将哪一种颜色打印到特定位置。在所选择的颜色序列中，逐个加上颜色的浓度值，以产生增加直至其超过阈值的浓度和。然后，将相加的总和超过阈值的最后一个颜色在对应的点打印到介质页。该系统可以使用高频蓝噪声屏幕，并且可以通过打印由两个或更多个不同颜色的墨水形成的次要颜色点以及单个颜色点来操作以比通过墨水颜色的数量打印更多颜色的墨滴。

10. 发明授权

US08830520B2 System and method for enhancing the density of black 有权
标题翻译：提高黑色密度的系统和方法
公开(公告)号：US08830520B2
公开(公告)日：2014-09-09
申请号：US12884311
申请日：2010-09-17
申请人： Meng Yao
发明人： Meng Yao
IPC分类号： B41B15/00 , H04N1/407 , H04N1/60
CPC分类号： H04N1/407 , H04N1/6022
摘要： A computer-implemented method and system for enhancing black density of a halftoned bitmap are provided. The method includes receiving a halftoned bitmap into computer memory, and, using a computer, identifying at least one black-only pixel in the halftoned bitmap. The method further includes for each of the identified black-only pixels, identifying at least one black-only pixel as a candidate for adding color based at least in part on the location of the black-only pixel with respect to an edge in the halftoned bitmap, modifying the halftoned bitmap by adding color to at least one of the candidate black-only pixels, and outputting the modified halftoned bitmap.
摘要翻译：提供了一种用于增强半色调位图的黑色密度的计算机实现的方法和系统。该方法包括将半色调位图接收到计算机存储器中，并且使用计算机识别半色调位图中的至少一个仅黑色像素。该方法还包括针对每个识别的仅黑色像素，至少部分地基于黑色像素相对于半色调像素中的边缘的位置，将至少一个仅黑色像素识别为用于添加颜色的候选位图，通过将颜色添加到候选的仅黑色像素中的至少一个来修改半色调位图，并输出修改的半色调位图。

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