公开(公告)号：US07719722B2

公开(公告)日：2010-05-18

申请号：US10044468

申请日：2002-01-11

申请人： Gaurav Sharma ,  Shen-ge Wang ,  Zhigang Fan

发明人： Gaurav Sharma ,  Shen-ge Wang ,  Zhigang Fan

IPC分类号： G06K15/00 ,  H04N1/405 ,  B41J2/205

CPC分类号： G06K15/107 ,  H04N1/4053

摘要： A system and method for halftoning for multi-pass rendering of an image in which different pixel locations are rendered in each pass which reduces the effects of inter-pass mis-registration errors. The method of halftoning includes restricting a substantial majority of the pixels turned on to render a tone to the minimum number of passes required to produce the tone. The halftoning method can include generating a stochastic halftone turn-on sequence and re-ordering the turn-on sequence. The halftoning method can also use error diffusion, adding a zero mean bias signal to either the image input pixels or the threshold values. The halftoning method is applicable to color or black and white rendering.

摘要翻译： 用于半色调的系统和方法，用于在每次通过中渲染不同像素位置的图像的多遍渲染，其减少了通过间错误注册错误的影响。 半色调的方法包括将打开的大部分像素限制为产生音调所需的最小通过次数。 半色调方法可以包括产生随机半色调开启序列并重新排序开启序列。 半色调方法还可以使用误差扩散，向图像输入像素或阈值添加零平均偏置信号。 半色调方法适用于彩色或黑白渲染。

公开(公告)号：US07656556B2

公开(公告)日：2010-02-02

申请号：US11712356

申请日：2007-02-28

申请人： Shen-ge Wang

发明人： Shen-ge Wang

IPC分类号： H04N1/387 ,  H04N1/40 ,  G06K9/36 ,  G06T5/00 ,  B41M3/10

CPC分类号： H04N1/00843 ,  H04N1/00875 ,  H04N1/00883

摘要： An apparatus and method are provided for processing a digital image to determine whether the image includes a region of differential gloss (which would yield a differential gloss when that digital image is printed into hardcopy). The method includes identifying whether an input digital image has a periodic characteristic which is indicative of a cluster screen halftoned digital image and, if so, determining a correlation between first and second filters and halftone structures of the identified digital image. The second filter has a different polarization from the first filter. The first and second filters are selected to enable a region of differential gloss in the identified digital image to be identified, based on the determined correlations. Where such a region or regions are detected, a representation of the differential gloss image may be displayed and/or another action automatically initiated, such as restricting printing of the image.

摘要翻译： 提供了一种用于处理数字图像以确定图像是否包括差异光泽区域的装置和方法（当该数字图像被打印到硬拷贝中时会产生差异光泽）。 该方法包括识别输入数字图像是否具有指示簇屏幕半色调数字图像的周期特性，如果是，则确定识别的数字图像的第一和第二滤波器和半色调结构之间的相关性。 第二滤光器具有与第一滤光器不同的偏振。 选择第一和第二滤光器以便基于确定的相关性来识别识别的数字图像中的差分光泽的区域。 在检测到这样的区域或区域的情况下，可以显示差异光泽图像的表示和/或自动启动另一动作，例如限制图像的打印。

公开(公告)号：US20080093468A1

公开(公告)日：2008-04-24

申请号：US11582813

申请日：2006-10-18

申请人： Zhigang Fan ,  Reiner Eschbach ,  Calvin Jon Marlett ,  William A. Fuss ,  James R. Low ,  Shen-ge Wang

发明人： Zhigang Fan ,  Reiner Eschbach ,  Calvin Jon Marlett ,  William A. Fuss ,  James R. Low ,  Shen-ge Wang

IPC分类号： G06K19/06

CPC分类号： B42D25/305 ,  B42D15/0073 ,  B42D25/21 ,  B42D25/29 ,  B42D2035/02 ,  B42D2035/50

摘要： A system for generating a security mark includes a data reception component that receives information. A security mark generation component in communication with the data reception component generates at least one security mark configuration based at least in part upon the received information. The at least one security mark configuration includes at least one simulation mark which resembles a natural feature. An application component applies one configuration of the at least one security mark configurations to a recipient. The applied security mark configuration obeys at least one rule whereby the security mark is distinguishable from the natural feature which it resembles by a system for detection of security marks.

摘要翻译： 用于生成安全标记的系统包括接收信息的数据接收部件。 与数据接收组件通信的安全标记生成组件至少部分地基于所接收的信息来生成至少一个安全标记配置。 所述至少一个安全标记配置包括至少一个类似于自然特征的模拟标记。 应用组件将至少一个安全标记配置的一个配置应用于接收者。 应用的安全标记配置遵循至少一个规则，其中安全标记与其由用于检测安全标记的系统类似的自然特征区分开。

公开(公告)号：US07092128B2

公开(公告)日：2006-08-15

申请号：US10159432

申请日：2002-05-30

申请人： Shen-ge Wang ,  Beilei Xu ,  Chu-heng Liu

发明人： Shen-ge Wang ,  Beilei Xu ,  Chu-heng Liu

IPC分类号： H04N1/405 ,  H04N1/52

CPC分类号： H04N1/405

摘要： The present invention relates to providing a designer with the tools for the manipulation of differential gloss in halftoned images. A special mask layer is provided for the rendering of desired glossmark image data. The desired glossmark image data is used to select between two halftones with anisotropic structure characteristics which are significantly different in orientation while remaining identical in density. This selection is made for each corresponding portion of primary image data. In this way, a halftone image of the primary image is generated with glossmarks imbedded therein which will display differential gloss without the need for special toners or paper.

摘要翻译： 本发明涉及为设计者提供用于在半色调图像中操纵差别光泽的工具。 提供了一种特殊的掩模层，用于渲染所需的光泽图像数据。 期望的光标图像数据用于在具有各向异性结构特征的两个半色调之间进行选择，这些特征在取向上显着不同，而密度保持相同。 对主图像数据的每个相应部分进行该选择。 以这种方式，生成具有镶嵌在其中的光泽度的主图像的半色调图像，其将显示不同的光泽，而不需要特殊的调色剂或纸张。

公开(公告)号：US20060120557A1

公开(公告)日：2006-06-08

申请号：US11006198

申请日：2004-12-06

申请人： Shen-ge Wang

发明人： Shen-ge Wang

IPC分类号： G06K9/00

CPC分类号： H04N1/32203 ,  G06T1/0028 ,  G06T2201/0051 ,  H04N1/32256 ,  H04N2201/3233 ,  H04N2201/327 ,  H04N2201/3271

摘要： Methods and systems for utilizing conjugate cluster halftone screens to embed patterns or images as invisible watermarks into both digital halftone image files and corresponding printed documents are disclosed. In general, two or more two-conjugate halftone screens can be configured to provide a basic information carrier for embedding a digital watermark into a document. Thereafter, one or more clusters can be created from the two-conjugate halftone screens, wherein such clusters include the same centroid position relative to a grid defined by fundamental halftone frequencies. Two halftone patterns can then be blended from the two-conjugate halftone screens in a cluster-to-cluster basis so that virtually no loss of image quality occurs in comparison with an output of either the two-conjugate halftone screens, thereby permitting the digital watermark to be embedded into the document utilizing the two-conjugate halftone screens.

摘要翻译： 公开了用于利用共轭簇半色调屏幕将图案或图像作为不可见水印嵌入到数字半色调图像文件和对应的打印文档中的方法和系统。 通常，两个或更多个双共轭半色调屏幕可以被配置为提供用于将数字水印嵌入到文档中的基本信息载体。 此后，可以从双共轭半色调屏幕创建一个或多个簇，其中这样的簇包括相对于由基本半色调频率限定的网格的相同重心位置。 然后可以从群集到群集的基础上将两个半色调图案从双共轭半色调屏幕混合，使得与双共轭半色调网屏幕的输出相比，几乎不会发生图像质量损失，从而允许数字水印 使用双共轭半色调网屏幕嵌入到文档中。

公开(公告)号：US06991260B2

公开(公告)日：2006-01-31

申请号：US10284551

申请日：2002-10-30

申请人： Zhigang Fan ,  Shen-ge Wang

发明人： Zhigang Fan ,  Shen-ge Wang

IPC分类号： B42D15/00

CPC分类号： B42D25/30 ,  B41M3/14 ,  B42D2035/14 ,  B42D2035/16 ,  Y10S428/916 ,  Y10T428/1486

摘要： Patterns are aligned on the front and back surfaces of a document to provide an anti-counterfeiting security device. The document is sufficiently transparent to allow see-through of the partial image on the back of the document to be superimposed on the partial image on the front of the document to form a complete image if the patterns are properly aligned. The complete image will disappear if misaligned.

摘要翻译： 图案在文档的正面和背面对准，以提供防伪安全装置。 文档足够透明，以允许文档背面的部分图像的透视叠加在文档正面的部分图像上，以便在图案正确对齐的情况下形成完整的图像。 如果未对齐，完整的图像将消失。

公开(公告)号：US06917443B1

公开(公告)日：2005-07-12

申请号：US09195593

申请日：1998-11-18

申请人： Shen-ge Wang

发明人： Shen-ge Wang

IPC分类号： H04N1/40 ,  H04N1/405

CPC分类号： H04N1/4055

摘要： A method and system of designing a digital halftoning screen for forming images on output sheets according to a set of image signals. The method generates a halftone line screen having multiple levels, each level having multiple line segments, each line segment having an equal pre-determined number of elements. The method stochastically assigns threshold values to pixels corresponding to a first element within the multiple line segments of a first level and assigns a same threshold value to a pixel corresponding to a single level to create a first element stochastic fill sequence. The method then assigns threshold values to pixels corresponding to a first element within the multiple line segments of the remaining levels of the halftone line screen according to the first element stochastic fill sequence.

摘要翻译： 根据一组图像信号，设计用于在输出纸上形成图像的数字半色调屏幕的方法和系统。 该方法产生具有多个等级的半色调线屏幕，每个级别具有多个线段，每个线段具有相等的预定数量的元素。 该方法随机地将阈值分配给与第一级的多个线段中的第一元素相对应的像素，并将相同的阈值分配给与单个级别相对应的像素，以创建第一元素随机填充序列。 然后，根据第一元素随机填充序列，该方法将阈值分配给与半色调线屏幕的剩余电平的多个线段中的第一元素相对应的像素。

公开(公告)号：US06717696B1

公开(公告)日：2004-04-06

申请号：US09329265

申请日：1999-06-28

申请人： Shen-ge Wang ,  Zhigang Fan

发明人： Shen-ge Wang ,  Zhigang Fan

IPC分类号： G06F1500

CPC分类号： G06K15/02 ,  H04N1/40075 ,  H04N1/4055 ,  H04N1/409

摘要： By using negative feedback, moiré patterns can be reduced, or virtually eliminated, from input black-and-white or color original images. In particular, by feeding back an image containing the difference between the original input image and the halftone output with possible moiré patterns, and subtracting the low-frequency part of this image from the original input image, a resultant halftone image can be achieved that has reduced moiré patterns.

摘要翻译： 通过使用负反馈，可以从输入黑白或彩色原始图像中减少或实际消除莫尔图案。 特别地，通过将​​包含原始输入图像和半色调输出之间的差异的图像以可能的莫尔图案反馈，并且从原始输入图像中减去该图像的低频部分，可以实现所得到的半色调图像，其具有 减少莫尔图案。

公开(公告)号：US06266157B1

公开(公告)日：2001-07-24

申请号：US09191790

申请日：1998-11-13

申请人： Zhigang Fan ,  Shen-ge Wang

发明人： Zhigang Fan ,  Shen-ge Wang

IPC分类号： H04N146

CPC分类号： H04N1/4053

摘要： A method of quantizing pixels from a first pixel depth to a second includes adding to an original value of each pixel to be quantized, an error value resulting from quantization of any previous pixels, to generate a modified pixel value; comparing each modified pixel with threshold varying in accordance with the gray difference that a printed mark would make to a neighborhood pixels and outputting second depth pixels responsive to said comparison; and determining a halftoning error as a function of the modified pixel values, the gray difference, and the binary signals, and distributing say error to other gray level pixels in an image.

摘要翻译： 量化从第一像素深度到第二像素的像素的方法包括将要量化的每个像素的原始值添加到由任何先前像素的量化产生的误差值，以产生修正像素值; 将每个修改的像素与根据打印标记对邻近像素产生的灰度差变化的阈值进行比较，并响应于所述比较输出第二深度像素; 以及根据修改的像素值，灰度差和二进制信号确定半色调误差，并将所述误差分配给图像中的其他灰度级像素。

公开(公告)号：US5859955A

公开(公告)日：1999-01-12

申请号：US786470

申请日：1997-01-21

申请人： Shen-ge Wang

发明人： Shen-ge Wang

IPC分类号： H04N1/405

CPC分类号： H04N1/4055

摘要： A method of halftoning a digitized image is described, in which a "stoclustic" screen is used. The halftone outputs produced by stochastically clustered pixel screens of the present invention (also referred to herein as "stoclustic" screens) are clustered about arbitrarily or otherwise specified centers. According to one embodiment of the present invention, one step in the present invention requires that the locations of the set of stochastically distributed black and white cluster centers must be determined. Thereafter, according to block 104, a dot or pixel growth positioning sequence for adding pixels to the cluster about the selected cluster centers must be established.

摘要翻译： 描述了一种对数字化图像进行半色调的方法，其中使用“静态”屏幕。 通过本发明的随机聚类像素屏幕（在本文中也称为“屏蔽”屏幕）产生的半色调输出聚集在任意或另外指定的中心处。 根据本发明的一个实施例，本发明的一个步骤要求必须确定该组随机分布的黑色和白色聚类中心的位置。 此后，根据方框104，必须建立一个点或像素增长定位序列，用于将关于所选择的聚类中心的像素添加到群集。