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1. 发明申请

WO2019066779A1 GENERATING AN AREA COVERAGE VECTOR 审中-公开
公开(公告)号：WO2019066779A1
公开(公告)日：2019-04-04
申请号：PCT/US2017/053484
申请日：2017-09-26
申请人： HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
发明人： MOROVIC, Peter , MOROVIC, Jan
IPC分类号： H04N1/60
CPC分类号： H04N1/40087 , H04N1/60
摘要： Certain examples described herein relate to generating a Neugebauer Primary area coverage (NPac) vector. In certain cases, a first plurality of Neugebauer Primaries (NPs) defined by a first NPac vector is determined, the first plurality of NPs defining a set of characteristics of a printing process. A second NPac vector, defining a second plurality of NPs, is generated based on the set of characteristics and a criterion relating to the printing process.

2. 发明申请

WO2013078836A1 多位深半色调调幅网点生成方法及装置审中-公开
公开(公告)号：WO2013078836A1
公开(公告)日：2013-06-06
申请号：PCT/CN2012/075724
申请日：2012-05-18
申请人：北大方正集团有限公司 , 北京大学 , 北京北大方正电子有限公司 , 北京北大方正技术研究院有限公司 , 李海峰 , 杨斌
发明人：李海峰 , 杨斌
IPC分类号： H04N1/40 , H04N1/405
CPC分类号： G06K15/1881 , H04N1/40087 , H04N1/4055
摘要：本发明提供了一种多位深半色调调幅网点生成方法和装置，方法包括：扫描输入图像获得当前像素的值P xy ，其中x代表当前像素的横向位置索引，y代表当前像素的纵向位置索引；从i=0开始，从预设的阵多位深阈值矩阵G中获取g j ，判断如果P xy j ，则设置印刷设备的加网输出灰度层次值Out＝L-1－i；否则递增i，并继续执行上述判断设置的步骤；其中，L代表调频网层次数，L＝2 e ，e代表所述印刷设备的位深值，i为整数，且i∈[0，L−1]，设置h=(y%n)×m+(x%m)+i×m×n，h为G中元素g顺序排列的索引号，g j 是G中第i行第j列的元素值。本发明提高了多位深半色调调幅网点生成的速度。

3. 发明申请

WO2008032877A1 IMAGE PROCESSING APPARATUS, PROGRAM, IMAGE FORMING APPARATUS, IMAGE FORMING METHOD, AND DITHER MATRIX 审中-公开
标题翻译：图像处理装置，程序，图像形成装置，图像形成方法和数字矩阵
公开(公告)号：WO2008032877A1
公开(公告)日：2008-03-20
申请号：PCT/JP2007/068484
申请日：2007-09-14
申请人： RICOH COMPANY, LTD. , HIRANO, Masanori , IKE, Takahiro
发明人： HIRANO, Masanori , IKE, Takahiro
IPC分类号： H04N1/405 , B41J2/52 , G06T5/00
CPC分类号： H04N1/4051 , H04N1/40087 , H04N1/4057
摘要： An organized dither matrix is composed of a main matrix having dispersibility and a sub-matrix having randomness, and the intensity of a frequency characteristic of an output image relatively increases from a low frequency component, through an intermediate frequency component, to a high frequency component in respective tone levels.
摘要翻译：有组织的抖动矩阵由具有分散性的主矩阵和具有随机性的子矩阵组成，并且输出图像的频率特性的强度从低频分量通过中频分量相对增加到高频分量在各自的音调水平。

4. 发明申请

WO2006135810A2 METHOD AND SYSTEM FOR DESIGNING MULTILEVEL HALFTONE SCREENS USING SPOT FUNCTIONS 审中-公开
标题翻译：使用SPOT功能设计多层HALFTONE屏幕的方法和系统
公开(公告)号：WO2006135810A2
公开(公告)日：2006-12-21
申请号：PCT/US2006022628
申请日：2006-06-09
申请人： IBM , LI HONG , STANICH MIKEL JOHN , THOMPSON GERHARD R , WU CHAI WAH
发明人： LI HONG , STANICH MIKEL JOHN , THOMPSON GERHARD R , WU CHAI WAH
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.
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。

5. 发明申请

WO1998003341A1 PRINTER AND IMAGE RECORDING METHOD 审中-公开
标题翻译：打印机和图像记录方法
公开(公告)号：WO1998003341A1
公开(公告)日：1998-01-29
申请号：PCT/JP1997002491
申请日：1997-07-17
申请人： SEIKO EPSON CORPORATION , KAKUTANI, Toshiaki
发明人： SEIKO EPSON CORPORATION
IPC分类号： B41J02/21
CPC分类号： H04N1/40087 , B41J2/2125 , H04N1/52
摘要： In accordance with inputted half-tone data, the table of recording rates with dark ink is referred to first and it is determined by a systematic dithering method whether dark dots are formed or not. If it is determined that dark dots are formed, a pieozoelectric element (PE) of the head of the ink is driven to form dark dots and a result value (RV) is calculated. On the other hand, if it is determined that dark dots are not formed, the result value RV is 0. In accordance with the inputted half-tone data, it is judged by a method of error diffusion whether dots are formed with low darkness ink or not. Further, the result value is calculated. As a result, the darkness error between a formed image and the original image is decreased to a minimum by the ON/OFF of light dots. Therefore, when a printer which prints by using dots whose darkness per unit area is different is used, the ON/OFF of the different types of dots are adequately determined and the quality of the printing can be improved. Further, a constitution wherein the presence/absence of dots of achromatic color ink influences the formation of dots of cyan ink may be employed.
摘要翻译：根据输入的半色调数据，首先参照深色墨水的记录率表，并且通过系统抖动方法确定是否形成暗点。如果确定形成暗点，则驱动墨水头部的压电元件（PE）形成暗点，并计算结果值（RV）。另一方面，如果确定未形成暗点，则结果值RV为0.根据输入的半色调数据，通过误差扩散的方法判断点是否由低黑暗墨水形成或不。此外，计算结果值。结果，形成的图像和原始图像之间的黑暗误差通过光点的ON / OFF被降低到最小。因此，当使用通过使用每单位面积的黑度不同的点进行打印的打印机时，可以适当地确定不同类型的点的ON / OFF，并且可以提高打印质量。此外，可以采用无色墨水的点的存在/不存在影响青色墨水的点的形成的构造。

6. 发明申请

WO1996039772A1 METHOD AND SYSTEM FOR HALFTONING 审中-公开
标题翻译：哈尔滨的方法和系统
公开(公告)号：WO1996039772A1
公开(公告)日：1996-12-12
申请号：PCT/US1996008493
申请日：1996-06-03
申请人： APPLE COMPUTER, INC.
发明人： APPLE COMPUTER, INC. , KARLSSON, Magnus, L. , CHEN, Kok, S.
IPC分类号： H04N01/40
CPC分类号： H04N1/40087
摘要： A system and method for halftoning multi-level pixels preferably uses a threshold array divided into two or more classes. The classes are ordered in a visitation order. Each class contains at least one element. A halftone cell comprised of a plurality of pixels corresponds to the threshold array. As the intensity level for the halftone cell increases, the pixels corresponding to the elements in the first class are halftoned by fractional values of pixels until all of the pixels in that class reach saturation. As the intensity of the halftone cell increases, none of the pixels corresponding to the elements in any other class change state. Once the pixels corresponding to the elements in the first class are saturated, the pixels corresponding to the elements in the second class are halftoned by fractional values of pixels. In more general terms, the next class in the class visitation order is not addressed until the pixels corresponding to all of the elements in the previous class are saturated.
摘要翻译：用于半色调多级像素的系统和方法优选地使用分成两个或更多个类的阈值阵列。课程按照访问次序排序。每个类至少包含一个元素。由多个像素组成的半色调单元对应于阈值阵列。随着半色调细胞的强度水平增加，与第一类元素相对应的像素由像素的分数值进行半色调，直到该类的所有像素达到饱和。随着半色调细胞的强度增加，对应于任何其他类别中的元素的像素都不会改变状态。一旦对应于第一类中的元素的像素饱和，则与第二类中的元素对应的像素由像素的分数值进行半色调。在更一般的术语中，类访问顺序中的下一个类不被解决，直到与先前类中的所有元素相对应的像素是饱和的。

7. 发明申请

WO2015105975A1 MULTILAYER WHITE PRINTING WITH WHITE-BALANCE 审中-公开
标题翻译：多层白色打印白平衡
公开(公告)号：WO2015105975A1
公开(公告)日：2015-07-16
申请号：PCT/US2015/010622
申请日：2015-01-08
申请人： ELECTRONICS FOR IMAGING, INC.
发明人： HEATH, Peter , LAHUT, Joseph , CRAM, Dwight , KO, Bryan
IPC分类号： B41J2/005 , B41J2/01 , B41J2/205
CPC分类号： B41J2/2132 , B41J2/0458 , B41J2/2114 , B41J2/2117 , B41J2/2128 , B41J11/002 , B41J19/142 , G06K15/102 , H04N1/40087 , H04N1/4078 , H04N1/54 , H04N1/60 , H04N1/6097
摘要： White-balance is improved when printing on colored media, while minimizing the time and use of costly materials required by present approaches. In an embodiment, the typical solid white fill or background layer is altered by including in the white layer one or more of the other colors already available in the printer to shade this layer. Thus, a small amount of cyan, for example, helps balance a pink-ish (red) media; yellow is used for blue media; and magenta is used for green media; as well as combinations thereof. A combination of transparent process inks and opaque white helps to maintain brightness (luminosity).
摘要翻译：在彩色介质上打印时，白平衡得到改善，同时最大限度地减少了现有方法所需的昂贵材料的时间和使用。在一个实施例中，通过在白色层中包括已经在打印机中可用的一种或多种其它颜色来改变典型的固体白色填充或背景层以遮蔽该层。因此，例如，少量的青色有助于平衡粉红色（红色）介质; 黄色用于蓝色媒体; 洋红色用于绿色媒体; 以及它们的组合。透明处理油墨和不透明白色的组合有助于保持亮度（亮度）。

8. 发明申请

WO2012101059A1 METHOD FOR MULTILEVEL HALFTONING 审中-公开
标题翻译：多平面缩小方法
公开(公告)号：WO2012101059A1
公开(公告)日：2012-08-02
申请号：PCT/EP2012/050890
申请日：2012-01-20
申请人： OCE-TECHNOLOGIES B.V. , DE GRIJS, Eduard, T., H.
发明人： DE GRIJS, Eduard, T., H.
IPC分类号： H04N1/405 , H04N1/40
CPC分类号： H04N1/40087 , H04N1/4057
摘要： A method is described for multilevel halftoning an image having pixels. Herein a tone value is attributed to a pixel in the image, the pixel having a pixel value from a predefined number of pixel values. The tone value is taken from a number of tone values that is in general smaller than the number of pixel values. Each tone value is associated with a predetermined amount of marking material to be applied in a print process. A number of threshold values is associated with each pixel to determine a tone value corresponding to the pixel value. In the image a region of pixels is defined for which the tone values and pixel values are summed. If the difference between these sums is larger than a predetermined error threshold, the threshold values of the pixels in the region are adjusted and new tone values are calculated. This method reduces the extent Moire artefacts occur for images in which a screen is present that may interfere with a screen according to which the threshold values are arranged. Also the loss of detail information due to the distribution of the threshold values is reduced.
摘要翻译：描述了一种用于多层次半色调具有像素的图像的方法。这里，色调值归因于图像中的像素，像素具有来自预定数量的像素值的像素值。音调值取自通常小于像素值数量的多个色调值。每个色调值与在打印处理中应用的预定量的标记材料相关联。多个阈值与每个像素相关联，以确定与像素值对应的色调值。在图像中，定义了色调值和像素值相加的像素区域。如果这些和之间的差大于预定误差阈值，则调整该区域中的像素的阈值并计算新的色调值。该方法减少了存在可能干扰屏幕的屏幕的图像的莫尔伪影的范围，根据该屏幕布置阈值。此外，减少了由于阈值分布导致的细节信息的丢失。

9. 发明申请

WO2011075419A1 CONTROLLING ERROR DIFFUSION DOT DENSITY 审中-公开
标题翻译：控制误差扩散密度
公开(公告)号：WO2011075419A1
公开(公告)日：2011-06-23
申请号：PCT/US2010/059984
申请日：2010-12-13
申请人： EASTMAN KODAK COMPANY , KESELBRENER, Michel
发明人： KESELBRENER, Michel
IPC分类号： H04N1/40 , H04N1/405 , H04N1/407
CPC分类号： H04N1/40087 , H04N1/4052 , H04N1/4078
摘要： A method for improving printing quality of a digital image using error diffusion screening including the steps for each pixel in a digital image: a) initialize weighted error diffusion value; b) translate first value (220) of each pixel to a second value (916); c) translate the second value of each pixel to create a third value (920); d) translate the third value of each pixel by adding the error diffusion value (216) to create a fourth value (224); e) generate a quantization value for each pixel in the digital image by using at least one threshold value; f) perform geometrical distribution in space of the first quantization (924) utilizing a first pixel mask (1604) and a second pixel mask for setting pixels in designated areas defined by the pixel masks; and g) update error diffusion value and go to step (b) until all pixels of the digital image are treated.
摘要翻译：一种使用误差扩散筛选提高数字图像的打印质量的方法，包括数字图像中每个像素的步骤：a）初始化加权误差扩散值; b）将每个像素的第一值（220）转换为第二值（916）; c）翻译每个像素的第二值以创建第三值（920）; d）通过添加误差扩散值（216）来转换每个像素的第三值以产生第四值（224）; e）通过使用至少一个阈值来生成所述数字图像中的每个像素的量化值; f）利用第一像素掩模（1604）和第二像素掩模在第一量化（924）的空间中执行几何分布，用于设置由像素掩模定义的指定区域中的像素; g）更新误差扩散值，并转到步骤（b），直到数字图像的所有像素得到处理。

10. 发明申请

WO2006136600A1 MULTILEVEL FREQUENCY MODULATION HALFTONE SCREEN AND METHOD FOR MAKING SAME. 审中-公开
标题翻译：多频调频HALFTONE画面及其制作方法。
公开(公告)号：WO2006136600A1
公开(公告)日：2006-12-28
申请号：PCT/EP2006/063461
申请日：2006-06-22
申请人： AGFA-GEVAERT , VAN GARSSE, Joris
发明人： VAN GARSSE, Joris
IPC分类号： H04N1/40
CPC分类号： H04N1/40087
摘要： A method is disclosed for calculating a set of threshold masks for the purpose of digital halftoning printing using multiple colorants. The method is computationally efficient and produces dot distributions of which the power spectrum has blue noise characteristics. The method makes use of a single valued function with a limited two-dimensional domain. The single valued function has a maximum at or near its origin and decreases monotonically towards the boundaries of the limited domain. The dot distributions corresponding to different colorants are optimized with regard to each other to minimize the visibility of graininess. The method enables to drive printers that are capable to render three density levels per pixel or more.
摘要翻译：公开了一种用于计算一组阈值掩模以用于使用多个着色剂进行数字半色调打印的方法。该方法在计算上有效率，并产生功率谱具有蓝色噪声特性的点分布。该方法利用具有有限二维域的单值函数。单值函数在其原点处或其附近具有最大值，并且朝向有限域的边界单调减小。相对于不同着色剂的点分布相互优化以最小化颗粒度的可视性。该方法能够驱动能够呈现每像素或更多像素的三个浓度级别的打印机。

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