公开(公告)号：US20090091795A1

公开(公告)日：2009-04-09

申请号：US12333883

申请日：2008-12-12

申请人： Shen-Ge Wang

发明人： Shen-Ge Wang

IPC分类号： H04N1/405

CPC分类号： H04N1/52 ,  H04N1/4058

摘要： Disclosed herein is a Moiré-free color halftone configuration for clustered dots. Unlike conventional methods, the disclosed method produces periodic hexagon rosettes of identical shapes. These exemplary hexagon rosettes have three fundamental spatial frequencies exactly equal to half of the fundamental frequency of the three halftone screens. The resultant halftone outputs are truly Moiré free, as all the fundamentals and harmonic frequencies are multiples of and thus higher in frequency than the rosette fundamental frequency. The halftone outputs resulting from the employment of the exemplary rosette design methodology provided herein, are also robust to the typical misregistration among color separations commonly found in color systems.

摘要翻译： 本文公开了一种用于聚集点的无莫里颜色半色调配置。 与常规方法不同，所公开的方法产生具有相同形状的周期性六边形玫瑰花结。 这些示例性六边形花环具有三个基本空间频率，其准确地等于三个半色调屏幕的基频的一半。 所得到的半色调输出是真正的莫尔自由的，因为所有的基本因素和谐波频率都是频率的倍数，因此频率高于玫瑰花基频。 由于使用本文提供的示例性玫瑰花结构设计方法所产生的半色调输出对于在彩色系统中通常发现的分色中的典型重合不良也是鲁棒的。

公开(公告)号：US07382495B2

公开(公告)日：2008-06-03

申请号：US10876000

申请日：2004-06-24

申请人： Chu-Heng Liu ,  Beilei Xu ,  Shen-Ge Wang

发明人： Chu-Heng Liu ,  Beilei Xu ,  Shen-Ge Wang

IPC分类号： H04N1/405 ,  B41M3/10

CPC分类号： H04N1/4055 ,  H04N1/4051

摘要： A method for reduction of differential gloss as found in hardcopy image prints. The method comprises selecting a first halftone having a high apparent gloss characteristic and a second halftone having a low apparent gloss characteristic while retaining an identical matching density characteristic to the first selected halftone. a A determination is then made of which areas of the halftone image correspond to potentially high gloss and low gloss regions under normal printing conditions. The first halftone is applied to those portions of the halftone image determined as corresponding to potentially low gloss regions, and the second halftone is applied to those portions of the halftone image determined as corresponding to potentially high gloss regions of the halftone image.

摘要翻译： 降低印刷图像印刷中所见的差异光泽的方法。 该方法包括选择具有高表观光泽特性的第一半色调和具有低表观光泽特性的第二半色调，同时保持与第一选定半色调相同的匹配密度特性。 然后，在正常打印条件下，确定半色调图像的哪些区域对应于潜在的高光泽度和低光泽度区域。 将第一半色调施加到被确定为对应于潜在的低光泽区域的半色调图像的那些部分，并且将第二半色调施加到被确定为对应于半色调图像的潜在高光泽区域的半色调图像的那些部分。

公开(公告)号：US20070097111A1

公开(公告)日：2007-05-03

申请号：US11263190

申请日：2005-10-31

申请人： Shen-Ge Wang

发明人： Shen-Ge Wang

IPC分类号： G06T15/00

CPC分类号： G02B27/225

摘要： Provided herein are teachings directed to using duplex printing on transparencies to create auto-stereoscopic images viewed in a “see-through” manner. By choosing different halftone structures, differing by having different spatial frequencies for each of the two sides of a transparency, a moiré pattern resulting due to halftone overlapping can be observed. On one side of the transparency is provided a uniform halftone with a selected median spatial frequency as printed. On the other side, the printing consists of two partitions: what is to be perceived as the background is printed using a halftone with spatial frequency equal to the median plus some delta x, while a desired image partition is printed using a halftone with a spatial frequency equal to the median minus the same delta x. The spatial frequency difference between the halftones on two sides creates a corresponding shift-magnification factor M. The moiré produced by the two partition print images as visually located appear in two separate spatial planes as separated by the transparency, with an amplified total depth of the shift-magnification factor M times the thickness of the transparency. This yields a moiré stereoscopic pattern for the desired image partition as clearly discernable to the human eye with out aid of lenses or other means.

摘要翻译： 这里提供的是针对在透明胶片上使用双面打印以创建以“透视”方式观看的自动立体图像的教导。 通过选择不同的半色调结构，通过对透明体的两侧的每一侧具有不同的空间频率而不同，可以观察到由于半色调重叠而导致的莫尔图案。 在透明度的一面上提供具有所选中位数空间频率的均匀半色调。 另一方面，打印由两个分区组成：使用具有等于中值加上一些delta x的空间频率的半色调打印背景是什么，而使用具有空格的半色调打印所需的图像分区 频率等于中值减去相同的delta x。 两侧半色调之间的空间频率差产生相应的移位放大系数M.由视觉定位的两个分区打印图像产生的云纹出现在由透明度分开的两个单独的空间平面中，放大的总深度 移位放大倍数M倍透明度的厚度。 这样就可以通过透镜或其他方式帮助人眼清晰地识别所需图像分区的莫尔立体图案。

公开(公告)号：US07064860B1

公开(公告)日：2006-06-20

申请号：US09571125

申请日：2000-05-15

申请人： Thyagarajan Balasubramanian ,  Shen-Ge Wang

发明人： Thyagarajan Balasubramanian ,  Shen-Ge Wang

IPC分类号： H04N1/40

CPC分类号： H04N1/40 ,  H04N1/6008 ,  H04N1/6027 ,  H04N1/6033 ,  H04N1/6088

摘要： A color marking device includes a color balance controller which adjusts the TRC linearization in accordance with an intended illuminant for viewing the output of the device. The system comprises a front end converter for converting an input signal representative of a target image comprised to preselect the color into a device dependent control system in accordance with the device TRC. The device TRC is selected in accordance with a signal identifying the intended illuminant for the output.

摘要翻译： 颜色标记装置包括色平衡控制器，该色平衡控制器根据用于观察装置的输出的预期光源来调整TRC线性化。 该系统包括前端转换器，用于根据设备TRC将表示包括预选颜色的目标图像的输入信号转换成依赖于设备的控制系统。 根据识别输出的预期光源的信号来选择装置TRC。

公开(公告)号：US20060109522A1

公开(公告)日：2006-05-25

申请号：US10992865

申请日：2004-11-19

申请人： Shen-Ge Wang

发明人： Shen-Ge Wang

IPC分类号： H04N1/38

CPC分类号： H04N1/4097

摘要： Disclosed is a method to detect streaks in the scanned documents. The principle of this method is that the profiles of streaks change very little from line to line, while profiles of other thin lines, as content of scanned documents, usually vary in a degree. Therefore, each scan-line can be searched for streak profiles. Once such a profile is detected, it is compared with a profile stored in a buffer, which represents a dynamic average of previously recorded scan-lines. If a stable streak profile is detected and lasted for a certain length, say one inch, the streak alarm can be turned on and a corresponding correction process can be applied for streak removal. With a limited buffer increase and without any major hardware modification, the proposed method can detect occurrence of streaks at run time of the scanning process.

摘要翻译： 公开了一种检测扫描文档中的条纹的方法。 这种方法的原理是，条纹的轮廓从一行到另一方变化很小，而作为扫描文档的内容的其他细线的轮廓通常在一定程度上变化。 因此，可以搜索每条扫描线的条纹轮廓。 一旦检测到这样的轮廓，就将其与存储在缓冲器中的轮廓进行比较，这表示先前记录的扫描线的动态平均值。 如果检测到稳定的条纹轮廓并持续一定长度，例如一英寸，则可以打开条纹报警，并且可以应用相应的校正过程来进行条纹去除。 在缓冲区有限的情况下，没有任何主要的硬件修改，所提出的方法可以检测扫描过程运行时的条纹发生。

公开(公告)号：US20060087665A1

公开(公告)日：2006-04-27

申请号：US10972357

申请日：2004-10-26

申请人： Shen-Ge Wang

发明人： Shen-Ge Wang

IPC分类号： H04N1/60

CPC分类号： H04N1/6019

摘要： Various implementations of this invention provide a method of color transformation of image data that included: providing at least two units, each unit comprising a combination of a plurality of look-up tables and a M×N matrix; providing image data configured in a first color space; processing the image data using a first unit to generate an output; and processing the generated output using a second unit to generate a second output; wherein the plurality of look-up tables are used to transform an input color space to a device dependent color space, and the M×N matrix is used to perform one of at least converting color data defined in standard space to data defined in XYZ space and converting image data defined in XYZ space to image data defined in LAB space.

公开(公告)号：US20060044617A1

公开(公告)日：2006-03-02

申请号：US10929811

申请日：2004-08-30

申请人： Shen-Ge Wang ,  Chu-Heng Liu ,  Beilei Xu

发明人： Shen-Ge Wang ,  Chu-Heng Liu ,  Beilei Xu

IPC分类号： H04N1/405 ,  G06K15/00

CPC分类号： H04N1/54 ,  G06K15/02 ,  G06K15/186 ,  H04N1/4058

摘要： A method for reduction of differential gloss as found in halftone image hardcopy prints. The method comprises selecting either a single halftone or employing two halftones: a first halftone having a high apparent gloss characteristic; and a second halftone having a low apparent gloss characteristic. A determination is then made of which areas of the halftone image correspond to potentially high gloss and low gloss regions under normal printing conditions. An overlay of clear toner is applied to the hardcopy print of the halftone image. In one approach a single halftone is employed to control the physical area coverage of the applied clear toner layer so as to adjust the local gloss across for the determined regions and thereby balance the evenness of gloss across the entire hardcopy print of the halftone image. Greater physical area coverage is provided as controlled by the single halftone in low gloss regions, and corresponding less physical area coverage is provided in the low gloss regions. In a further approach two halftones are employed. The first halftone is directed to those portions of the overlaid clear toner determined as corresponding to potentially low gloss regions of the halftone image, and the second halftone is directed to those portions of the clear toner layer determined as overlaying potentially high gloss regions of the halftone image.

摘要翻译： 减少在半色调图像硬拷贝印刷品中发现的差别光泽的方法。 该方法包括选择单个半色调或采用两个半色调：具有高表观光泽特性的第一半色调; 和具有低表观光泽特性的第二半色调。 然后确定半色调图像的哪些区域在正常打印条件下对应于潜在的高光泽度和低光泽度区域。 将透明调色剂的覆盖层应用于半色调图像的硬拷贝印刷。 在一种方法中，使用单个半色调来控制施加的透明调色剂层的物理面积覆盖，以便调整所确定区域的局部光泽度，从而平衡半色调图像的整个硬拷贝印刷品的光泽均匀度。 在低光泽区域由单一半色调控制提供更大的物理面积覆盖，并且在低光泽区域中提供相应较少的物理面积覆盖。 在另一方面，采用两个半色调。 第一个半色调指向重叠的透明调色剂的那些部分，这些部分被确定为对应于半色调图像的潜在的低光泽区域，并且第二半色调指向被确定为覆盖半色调的潜在高光泽区域的透明调色剂层的那些部分 图片。

公开(公告)号：US20050128524A1

公开(公告)日：2005-06-16

申请号：US10876001

申请日：2004-06-24

申请人： Chu-Heng Liu ,  Shen-Ge Wang ,  Beilei Xu

发明人： Chu-Heng Liu ,  Shen-Ge Wang ,  Beilei Xu

IPC分类号： H04N1/40 ,  B41M5/00 ,  B41M7/00 ,  G03G8/00 ,  G03G9/09 ,  H04N1/52 ,  H04N1/60 ,  H04N1/405

CPC分类号： B41M5/00 ,  B41M7/00 ,  G03G8/00 ,  G03G9/0926

摘要： The present invention relates to expanding the range of image densities over which the manipulation of differential gloss as may be inherent in halftoned images may be achieved. By selectively applying halftones with anisotropic structure characteristics which are significantly different in orientation while remaining identical in density, a gloss image may be superimposed within an image without the need for special toners or paper. This technique may be enhanced across low and high density areas by application of clear toner. Further, in color systems, light color toner may be applied to low density image areas and dark under-color applied in high density image areas, to expand the range of image densities over which a desired glossmark image will bear an effect.

摘要翻译： 本发明涉及扩大可以实现半色调图像固有的差分光泽操作的图像浓度的范围。 通过选择性地施加各向异性结构特征的半色调，其在取向上显着不同，同时保持密度相同，可以在图像内叠加光泽图像，而不需要特殊的调色剂或纸张。 通过使用透明调色剂，可以在低密度和高密度区域增强该技术。 此外，在色彩系统中，可以将浅色调色剂施加到低密度图像区域和深色底色施加在高密度图像区域中，以扩大图像浓度的范围，期望的光标图像将在该范围内产生影响。

公开(公告)号：US08477374B2

公开(公告)日：2013-07-02

申请号：US12894475

申请日：2010-09-30

申请人： Vishal Monga ,  Shen-Ge Wang ,  Raja Bala

发明人： Vishal Monga ,  Shen-Ge Wang ,  Raja Bala

IPC分类号： H04N1/60

CPC分类号： H04N1/6033

摘要： Systems and methods are described that facilitate reducing a number of patches used in characterizing a color halftone printer via a binary color printer model. A binary printer model involves printing of a fundamental set of color binary patterns that encompass all possible halftone outputs. A k-center clustering technique is employed to automatically find and eliminate redundancies in the initial set of binary color patterns. Once the number of patches is reduced to an acceptable number, a multiplicative reflectance model is applied that better approximates the physical process and therefore improves accuracy.

摘要翻译： 描述了有助于通过二进制彩色打印机模型减少用于表征彩色半色调打印机的多个补丁的系统和方法。 二进制打印机模型涉及打印包含所有可能的半色调输出的基本颜色二进制图案集。 采用k-中心聚类技术来自动寻找和消除初始二值颜色图案集中的冗余。 一旦将补片的数量减少到可接受的数量，则应用更好地逼近物理过程并因此提高准确度的乘法反射率模型。

公开(公告)号：US08107099B2

公开(公告)日：2012-01-31

申请号：US11166298

申请日：2005-06-24

申请人： Robert P. Loce ,  Shen-Ge Wang

发明人： Robert P. Loce ,  Shen-Ge Wang

IPC分类号： H04N1/40

CPC分类号： H04N1/32251 ,  B41M3/14 ,  H04N1/32203 ,  H04N1/32208 ,  H04N1/32229 ,  H04N1/32304 ,  H04N1/3232 ,  H04N1/32325

摘要： A watermark is provided for use with images or image portions, such as saturated text. The watermark is provided as a modulation to the optical density of a public image or image portion wherein both modulated and unmodulated portions of the public image or image portion have an optical density that is beyond a threshold optical density beyond which the human visual system has a low sensitivity to optical density variations. Alternatively, the modulation is made at such a low amplitude as to be difficult to perceive by the human visual system. The modulation may be applied via an overprinting operation. Alternatively the modulation may be applied to image data prior to printing.

摘要翻译： 提供水印以用于图像或图像部分，例如饱和文本。 提供水印作为对公众图像或图像部分的光密度的调制，其中公共图像或图像部分的调制和未调制部分都具有超过阈值光密度的光密度，超过该阈值的人视觉系统具有 对光密度变化的敏感度低。 或者，以如此低的幅度进行调制，使其难以被人类视觉系统察觉。 可以通过套印操作来应用调制。 或者，可以在打印之前将调制应用于图像数据。