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21. 发明授权

US08922802B2 Method and system for halftoning using energy minimization 有权
标题翻译：使用能量最小化进行半色调的方法和系统
公开(公告)号：US08922802B2
公开(公告)日：2014-12-30
申请号：US13773017
申请日：2013-02-21
申请人： Chai Wah Wu , Barry M. Trager , Mikel J. Stanich , Kartheek Chandu
发明人： Chai Wah Wu , Barry M. Trager , Mikel J. Stanich , Kartheek Chandu
IPC分类号： G06F3/12 , G06K15/02
CPC分类号： G06K15/1881 , H04N1/4051
摘要： A method is disclosed. The method includes generating a set of points via energy minimization to implement halftone seed pattern.
摘要翻译：公开了一种方法。该方法包括通过能量最小化产生一组点以实现半色调种子图案。

22. 发明授权

US08693054B2 Mask generation mechanism 有权
标题翻译：面具生成机制
公开(公告)号：US08693054B2
公开(公告)日：2014-04-08
申请号：US13345456
申请日：2012-01-06
申请人： Kartheek Chandu , Mikel J. Stanich , Chai Wah Wu , Barry M. Trager
发明人： Kartheek Chandu , Mikel J. Stanich , Chai Wah Wu , Barry M. Trager
IPC分类号： H04N1/60
CPC分类号： H04N1/4051
摘要： A method is disclosed. The method includes generating a seed pattern which ensures one dot per column, computing an auto correlation function and performing pixel error processing. Pixel error processing includes performing multiple operations during each iteration to create visually pleasing halftone mask patterns which follow a one dot per column constraint.
摘要翻译：公开了一种方法。该方法包括生成保证每列一个点的种子图案，计算自相关函数并执行像素误差处理。像素误差处理包括在每次迭代期间执行多个操作以创建视觉上令人满意的半色调掩模图案，其遵循每列约束的一个点。

23. 发明申请

US20130265612A1 Hybrid Halftone Generation Mechanism 有权
标题翻译：混合半色调生成机制
公开(公告)号：US20130265612A1
公开(公告)日：2013-10-10
申请号：US13440830
申请日：2012-04-05
申请人： Kartheek Chandu , Mikel J. Stanich , Chai Wah Wu , Barry M. Trager
发明人： Kartheek Chandu , Mikel J. Stanich , Chai Wah Wu , Barry M. Trager
IPC分类号： H04N1/405
CPC分类号： H04N1/405 , G06K15/1881 , H04N1/4052 , H04N1/4053
摘要： A method is disclosed. The method includes generating a Continuous Tone Image (CTI) with all pixel values same as a first gray level, generating an initial Half Tone Image (HTI) with all pixel values equal to minimum absorptance level and computing a change in pixel error for a first pixel. The change in pixel error is computed by identifying a first pixel indicated in a valid pixel map, toggling the first pixel with all the possible output states and swapping the first pixel with all neighbor pixels only if the stacking constraint is satisfied, updating the HTI with the maximum error decrease operation and continue to next pixel location till the end criteria is met.
摘要翻译：公开了一种方法。该方法包括产生具有与第一灰度级相同的所有像素值的连续色调图像（CTI），产生具有等于最小吸收水平的所有像素值的初始半色调图像（HTI），并计算第一像素值的像素误差的变化像素。通过识别有效像素图中指示的第一像素来计算像素误差的变化，如果满足堆叠约束，则仅切换具有所有可能输出状态的第一像素并且将第一像素与所有相邻像素交换，更新HTI与最大误差减小操作，并继续到下一个像素位置，直到满足结束标准。

24. 发明授权

US07599097B2 Method and system for designing multilevel halftone screens using spot functions 有权
标题翻译：使用现场功能设计多层半色调网版的方法和系统
公开(公告)号：US07599097B2
公开(公告)日：2009-10-06
申请号：US11149235
申请日：2005-06-10
申请人： Hong Li , Mikel John Stanich , Gerhard R. Thompson , Chai Wah Wu
发明人： Hong Li , Mikel John Stanich , Gerhard R. Thompson , Chai Wah Wu
IPC分类号： G06K15/00
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.
摘要翻译：使用点功能产生半色调表的方法和系统将半色调矩阵的半色调单元内的像素细分成多个子像素，确定与每个子像素的位置相对应的光点函数的值，半色调矩阵内的像素重复细分和确定半色调矩阵中的所有子像素，对整个半色调矩阵的值进行排序，对排序的值进行归一化，基于归一化值生成累积直方图，并存储累积直方图作为半色调表。

25. 发明申请

US20080279417A1 METHOD AND SYSTEM FOR EMBEDDING AN IMAGE INTO TWO OTHER IMAGES 审中-公开
标题翻译：将图像嵌入两个其他图像的方法和系统
公开(公告)号：US20080279417A1
公开(公告)日：2008-11-13
申请号：US11751885
申请日：2007-05-22
申请人： Mikel J. Stanich , Gerhard R. Thompson , Chai Wah Wu
发明人： Mikel J. Stanich , Gerhard R. Thompson , Chai Wah Wu
IPC分类号： G06K9/00
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。

26. 发明授权

US07400430B2 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：US07400430B2
公开(公告)日：2008-07-15
申请号：US10672234
申请日：2003-09-25
申请人： Joseph Stanley Czyszczewski , Hong Li , James T. Smith, II , Mikel John Stanich , Gerhard Robert Thompson , Chai Wah Wu
发明人： Joseph Stanley Czyszczewski , Hong Li , James T. Smith, II , Mikel John Stanich , Gerhard Robert Thompson , Chai Wah Wu
IPC分类号： H04N1/58 , G03F3/08
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。

27. 发明授权

US07310168B2 Method and apparatus for controlling a spot function for digital halftoning 有权
标题翻译：用于控制数字半色调的点功能的方法和装置
公开(公告)号：US07310168B2
公开(公告)日：2007-12-18
申请号：US09898254
申请日：2001-07-03
申请人： Jennifer Quirin Trelewicz , Danielle K. Dittrich , Yue Qiao , Gerhard Robert Thompson , Chai Wah Wu
发明人： Jennifer Quirin Trelewicz , Danielle K. Dittrich , Yue Qiao , Gerhard Robert Thompson , Chai Wah Wu
IPC分类号： H04N1/405 , G06K15/00
CPC分类号： G06K15/02 , H04N1/4055
摘要： A digital halftoning technique for controlling a spot function is disclosed. A method for generating a spot for use in halftoning according to the present invention includes defining a spot function that combines two functions selected to provide a predetermined spot shape for use in a halftone cell and scaling the spot function using a scaling function that varies according to a value of a first and second spot function ordinate. Asymmetric modulation of spot functions is used to control the touching of adjacent spots, and to change the shape of the spots with the gray region.
摘要翻译：公开了一种用于控制光点功能的数字半色调技术。根据本发明的用于产生用于半色调的斑点的方法包括定义点功能，其组合选择的两个功能以提供用于半色调单元的预定斑点形状，并且使用根据第一和第二点函数纵坐标的值。点函数的不对称调制用于控制相邻斑点的触摸，并改变斑点与灰色区域的形状。

28. 发明授权

US06807530B1 Method and apparatus for remote commerce with customer anonymity 失效
标题翻译：远程商务的方法和设备，客户匿名
公开(公告)号：US06807530B1
公开(公告)日：2004-10-19
申请号：US09129826
申请日：1998-08-05
申请人： Michael Shub , Charles Philippe Tresser , Chai Wah Wu
发明人： Michael Shub , Charles Philippe Tresser , Chai Wah Wu
IPC分类号： G06F1670
CPC分类号： G06Q30/06 , G06Q20/12 , G06Q20/385 , G06Q30/0615
摘要： A method and apparatus which enables customers to remotely order goods from a merchant and receive the goods without revealing customer identity or address to the merchant, nor revealing what is bought to the bank or payment agency, and more generally to preserve as much anonymity as required such that no party except the customer has complete information about a transaction. The method uses clearing houses or encryption to break links between customer information and the merchant.
摘要翻译：一种方法和装置，其使客户远程地从商家订购货物并且接收货物而不向商家泄露客户身份或地址，也不向银行或支付机构透露所购买的商品，并且更一般地保留所需的匿名性使得除了客户之外没有任何一方具有关于交易的完整信息。该方法使用清算所或加密来破坏客户信息和商家之间的链接。

29. 发明授权

US06687023B1 Data processing system and method for producing shifted-element halftone screens 失效
标题翻译：用于生成移位元件半色调网的数据处理系统和方法
公开(公告)号：US06687023B1
公开(公告)日：2004-02-03
申请号：US09550780
申请日：2000-04-17
申请人： Danielle Dittrich , Larry Ernst , Gerhard Robert Thompson , Chai Wah Wu
发明人： Danielle Dittrich , Larry Ernst , Gerhard Robert Thompson , Chai Wah Wu
IPC分类号： H04N1403
CPC分类号： H04N1/4055
摘要： A data processing system and method are described for generating a halftone screened image from an input image. A first threshold matrix is generated which, when utilized to halftone a solid gray input image, generates a first halftoned output image which is a plurality of generally solid vertical lines. The first threshold matrix includes a plurality of matrix elements arranged in a plurality of rows and a plurality of columns. A plurality of groups of the matrix elements are shifted within the first threshold matrix to create a second threshold matrix which, when utilized to halftone the solid gray input image, generates a second halftoned output image which is a checkerboard type pattern of alternating black or white blocks. In one embodiment, groups of the plurality of the rows are shifted horizontally over by at least one adjacent column to generate the second matrix.
摘要翻译：描述了从输入图像生成半色调筛选图像的数据处理系统和方法。产生第一阈值矩阵，当用于将实灰灰色输入图像进行半色调时，生成第一半色调输出图像，该第一半色调输出图像是多个大体上实线的垂直线。第一阈值矩阵包括排列成多行和多列的多个矩阵元素。多个矩阵元素组在第一阈值矩阵内移位以产生第二阈值矩阵，当第二阈值矩阵用于对实灰灰色输入图像进行半色调时，产生第二半色调输出图像，其是交替的黑色或白色的棋盘型图案块。在一个实施例中，多行中的组被水平移动至少一个相邻的列以产生第二矩阵。

30. 发明授权

US09036212B2 Halftone screen generation mechanism 有权
标题翻译：半色调屏幕生成机制
公开(公告)号：US09036212B2
公开(公告)日：2015-05-19
申请号：US13345466
申请日：2012-01-06
申请人： Kartheek Chandu , Mikel Stanich , Chai Wah Wu , Barry M. Trager
发明人： Kartheek Chandu , Mikel Stanich , Chai Wah Wu , Barry M. Trager
IPC分类号： H04N1/405 , H04N1/40 , G06K15/00
CPC分类号： H04N1/4051 , H04N1/40087
摘要： A method is disclosed. The method includes generating a Continuous Tone Image (CTI) with all pixel values same as the first gray level and an initial Half Tone Image (HTI) with all pixel values equal to minimum absorptance level, computing a change in pixel error by toggling with all the possible output states and swapping with all neighbor pixels only if the stacking constraint is satisfied, updating the HTI with the maximum error decrease operation and continue to next pixel location till the end criteria is met. Once the end criteria is met, the updated HTI is saved as a final halftone screen for that gray level and copied as the initial HTI for the next gray level along with CTI pixel values updated to the next gray level till the final gray value is reached.
摘要翻译：公开了一种方法。该方法包括产生具有与第一灰度级相同的所有像素值的连续色调图像（CTI）和具有等于最小吸收水平的所有像素值的初始半色调图像（HTI），通过全部切换来计算像素误差的变化可能的输出状态和所有相邻像素的交换只有在满足堆叠约束的情况下，用最大误差减少操作更新HTI并继续到下一个像素位置，直到满足结束标准。一旦满足结束标准，更新的HTI被保存为该灰度级的最终半色调屏幕，并被复制为用于下一个灰度级的初始HTI，以及更新到下一个灰度级的CTI像素值，直到达到最终灰度值。

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