公开(公告)号：US07800785B2

公开(公告)日：2010-09-21

申请号：US11754733

申请日：2007-05-29

申请人： Raja Bala ,  Reiner Eschbach ,  Shen-Ge Wang ,  Yonghui Zhao

发明人： Raja Bala ,  Reiner Eschbach ,  Shen-Ge Wang ,  Yonghui Zhao

IPC分类号： H04N1/405

CPC分类号： B41M3/144

摘要： The teachings as provided herein relate to a watermark embedded in an image, and methodology for same, that has the property of being relatively indecipherable under normal light, and yet decipherable under UV light. This fluorescent mark comprises a substrate containing optical brightening agents, and a first dot design printed as an image upon the substrate. The first dot design has as a characteristic, the property of strongly suppressing substrate fluorescence. A second dot design having a property of providing a differing level of substrate fluorescence suppression from that of the first dot design such that when rendered in close spatial proximity with the first dot design image print, the resultant image rendered substrate suitably exposed to an ultra-violet light source, will yield a discernable image evident as a fluorescent mark.

摘要翻译： 本文提供的教导涉及嵌入在图像中的水印及其方法，其具有在正常光线下相对不可破译的性质，并且在UV光下可解码。 该荧光标记包括含有荧光增白剂的基材和在基材上作为图像印刷的第一点设计。 第一个点设计具有强烈抑制底物荧光的特性。 具有提供与第一点设计不同程度的底物荧光抑制的性质的第二点设计，使得当与第一点设计图像打印紧密地空间接近时，所得到的图像渲染衬底适当地暴露于超 紫色光源，将产生明显的可辨别图像作为荧光标记。

公开(公告)号：US07768671B2

公开(公告)日：2010-08-03

申请号：US11522739

申请日：2006-09-18

申请人： Raja Bala ,  Michael Branciforte ,  Reiner Eschbach

发明人： Raja Bala ,  Michael Branciforte ,  Reiner Eschbach

IPC分类号： H04N1/60 ,  G03F3/08

CPC分类号： H04N1/6058

摘要： An image characterized by an original image gamut is received in an imaging device characterized by a device gamut. The original image gamut is enhanced to a first set of modified color values that occupy a greater fraction of the device gamut than the original image gamut. The modified color values of each pixel are mapped to new color values within the device gamut.

摘要翻译： 以原始图像色域为特征的图像被接收在以设备色域为特征的成像设备中。 原始图像色域被增强为占原始图像色域的设备色域的更大部分的第一组修改的颜色值。 每个像素的修改颜色值被映射到设备色域内的新颜色值。

公开(公告)号：US07764403B2

公开(公告)日：2010-07-27

申请号：US11634657

申请日：2006-12-06

申请人： Robert P. Loce ,  Raja Bala ,  Karen M. Braun

发明人： Robert P. Loce ,  Raja Bala ,  Karen M. Braun

IPC分类号： H04N1/40 ,  H04N1/60

CPC分类号： H04N1/32309 ,  H04N1/32299

摘要： Extended colorant sets are used to hide data or provide a watermark in printed images. Extended set colorants are colorants other than, and in addition to, the standard or common subtractive primary colorants: cyan, magenta, yellow and/or black. Where the extended colorant set supports a plurality of colorant recipes for rendering a given color, watermark data is used to select a colorant recipe from the plurality. As the watermark data to be encoded in the image changes state with image position, alternate colorant recipes or colorant selection functions are selected. The image is rendered based on the alternate colorant recipe selections. Watermark information is encoded in the colorant recipe or colorant selection function selection. Use of the extended colorant sets allows information to be encoded even in portions of an image having colors that do not include a neutral component.

摘要翻译： 扩展着色剂集合用于隐藏数据或在打印图像中提供水印。 扩展的定色着色剂是除了标准或普通的减色原色着色剂之外的除了以外的着色剂：青色，品红色，黄色和/或黑色。 在延伸着色剂组支持用于渲染给定颜色的多个着色剂配方的情况下，使用水印数据从多个中选择着色剂配方。 当图像中要编码的水印数据用图像位置改变状态时，选择着色剂配方或着色剂选择功能。 基于备选着色剂配方选择渲染图像。 水印信息在着色剂配方或着色剂选择功能选择中进行编码。 使用扩展着色剂组允许即使在具有不包括中性成分的颜色的图像的部分中也可以对信息进行编码。

公开(公告)号：US07733478B2

公开(公告)日：2010-06-08

申请号：US12258368

申请日：2008-10-24

申请人： Robert M. VanDuyn ,  Raja Bala

发明人： Robert M. VanDuyn ,  Raja Bala

IPC分类号： G01J1/10

CPC分类号： H04N1/6033

摘要： One aspect of the disclosure is directed to a calibration system. The calibration system includes an imaging device including a predetermined print engine capable of being calibrated and a calibration sheet. The calibration sheet includes at least one visible calibration reference region including a given mix of pre-selected reference colorants printed in the calibration reference region on the calibration sheet. The pre-selected reference colorants have been previously printed on the printable calibration sheet using a different imaging device that is different than the given imaging device and that has the same print engine as the given imaging device. The calibration sheet includes freshly printable target regions on the calibration sheet. The given imaging device is configured to enter into the calibration mode, wherein the given imaging device is configured to freshly print a mix of colorants corresponding to the pre-selected reference colorants onto at least one of the target regions.

摘要翻译： 本公开的一个方面涉及校准系统。 校准系统包括成像装置，其包括能够被校准的预定打印引擎和校准片。 校准片材包括至少一个可见的校准参考区域，其包括打印在校准片材上的校准参考区域中的预先选择的参考着色剂的给定混合物。 预先选择的参考着色剂已经使用与给定成像装置不同的不同的成像装置预先印刷在可印刷的校准片上，并且具有与给定的成像装置相同的印刷引擎。 校准页在校准页上包括新鲜可打印的目标区域。 给定的成像装置被配置为进入校准模式，其中给定的成像装置被配置为将对应于预先选择的参考着色剂的着色剂的混合物新鲜地打印到至少一个目标区域上。

公开(公告)号：US07688470B2

公开(公告)日：2010-03-30

申请号：US11613861

申请日：2006-12-20

申请人： Vishal Monga ,  Raja Bala

发明人： Vishal Monga ,  Raja Bala

IPC分类号： H04N1/60

CPC分类号： H04N1/6022

摘要： Disclosed are systems and methods for color calibration incorporating gray-component replacement, and more particularly, controlling gray component replacement in a color output device by applying a pre-defined transformation to a plurality of non-black channels to obtain at least one intermediate variable, and determining at least one output black (K) value from both the black channel input value and the intermediate variable, in order to provide control of gray component replacement in the color output device.

摘要翻译： 公开了用于颜色校准的系统和方法，其包括灰分分量替换，更具体地，通过将​​预定义的变换应用于多个非黑色通道来获得至少一个中间变量来控制彩色输出设备中的灰度分量替换， 以及从所述黑色通道输入值和所述中间变量两者确定至少一个输出黑色（K）值，以便提供所述颜色输出装置中的灰色成分替换的控制。

公开(公告)号：US07652808B2

公开(公告)日：2010-01-26

申请号：US10733608

申请日：2003-12-11

申请人： Raja Bala

发明人： Raja Bala

IPC分类号： G03F3/00 ,  G06K1/00 ,  G06K9/00 ,  G06K9/36

CPC分类号： H04N1/6027 ,  H04N1/6072

摘要： A system and method for gamut mapping includes a luminance compression algorithm for gamut mapping that varies across different parts of the image. In shadow regions, a soft compression function is applied to bring out the detail. In other regions, including areas with high local contrast, a hard clipping function is applied to preserve local contrast. The algorithm adaptively blends between these two functions to ensure that the overall compression function is spatially smooth. The system and method may also use chrominance information to compute “perceived lightness”, to be used as input to the low-pass filter. Also, the blending function α( ) could be a function of chrominance as well as luminance.

摘要翻译： 用于色域映射的系统和方法包括在图像的不同部分上变化的色域映射的亮度压缩算法。 在阴影区域，应用软压缩功能来显示细节。 在其他区域，包括局部对比度较高的区域，应用硬切割功能来保持局部对比度。 该算法自适应地融合了这两个功能，以确保整体压缩功能在空间上平滑。 该系统和方法还可以使用色度信息来计算“感知亮度”，以用作低通滤波器的输入。 此外，混合函数alpha（）可以是色度以及亮度的函数。

公开(公告)号：US07639401B2

公开(公告)日：2009-12-29

申请号：US11012994

申请日：2004-12-15

申请人： Raja Bala ,  Karen M. Braun ,  Robert J. Rolleston

发明人： Raja Bala ,  Karen M. Braun ,  Robert J. Rolleston

IPC分类号： H04N1/46 ,  G06K9/00

CPC分类号： H04N1/6033 ,  H04N9/3194

摘要： Provided herein are teachings directed to overcoming the problem of erroneous color reproduction on a color output device such as a color display. The teachings herein provide a method for correcting color image data input to a display device by displaying a target of color patches of known input values on the display device, and capturing an image of the target with a digital camera. This is followed by extracting camera signals from the image which corresponds to the color patches, and deriving a tone response calibration for the projector from the camera signals and the input values.

摘要翻译： 这里提供的是旨在克服彩色显示器等彩色输出装置上的错误色彩再现问题的教导。 本文的教导提供了一种通过在显示装置上显示已知输入值的色标目标并用数字照相机捕获目标图像来校正输入到显示装置的彩色图​​像数据的方法。 然后从相应于色块的图像中提取相机信号，并根据相机信号和输入值导出投影机的色调响应校准。

公开(公告)号：US07639260B2

公开(公告)日：2009-12-29

申请号：US11012993

申请日：2004-12-15

申请人： Raja Bala ,  Karen M. Braun ,  Robert J. Rolleston

发明人： Raja Bala ,  Karen M. Braun ,  Robert J. Rolleston

IPC分类号： G03F3/08 ,  G09G5/00 ,  G09G5/06 ,  G06K9/00 ,  G06K9/40 ,  G06T1/00 ,  H04N1/46 ,  H04N1/60

CPC分类号： H04N1/6033 ,  H04N9/3194 ,  H04N9/69 ,  H04N17/02 ,  H04N17/04

摘要： Provided herein are teachings directed to overcoming the problem of erroneous color reproduction on a color output device such as a color display. The teachings herein provide a system and apparatus for correcting color image data input to a display device by displaying a target of color patches of known input values on the display device, and capturing an image of the target with a digital camera. This is followed by extracting camera signals from the image which correspond to the color patches, and deriving a tone response calibration for the projector from the camera signals and the input values.

摘要翻译： 这里提供的是旨在克服彩色显示器等彩色输出装置上的错误色彩再现问题的教导。 本文的教导提供了一种系统和装置，用于通过在显示装置上显示已知输入值的色块的目标，并用数字照相机捕获目标的图像来校正输入到显示装置的彩色图​​像数据。 然后从相应于色块的图像中提取相机信号，并根据相机信号和输入值导出投影机的色调响应校准。

公开(公告)号：US20090237682A1

公开(公告)日：2009-09-24

申请号：US12052909

申请日：2008-03-21

申请人： Raja Bala ,  Yonghui Zhao

发明人： Raja Bala ,  Yonghui Zhao

IPC分类号： G06F3/12

CPC分类号： H04N1/6033

摘要： The appearance of a color print viewed under UV illumination is predicted using a target comprising color patches each printed using a known coverage of printer colorant(s). In one case, the target is illuminated using a UV light source and an electronic image of the target is captured using a digital camera or the like. In another case, a spectrophotometer is used both with and without a UV cutoff filter to measure the target. The captured image data or the spectrophotometric measurements are used to derive a UV printer characterization model that relates any arbitrary combination of printer colorants to a predicted UV color appearance value. Metameric colorant mixture pairs for visible light and UV light viewing can be determined using the UV model together with a conventional visible light printer characterization model. A visual matching task is used to determine a correction factor for the UV printer characterization model.

摘要翻译： 在UV照射下观察的彩色印刷品的外观使用包括使用已知的打印机着色剂覆盖印刷的各种色块的目标进行预测。 在一种情况下，使用UV光源照射目标，并且使用数字照相机等捕获目标的电子图像。 在另一种情况下，使用分光光度计来测量目标。 捕获的图像数据或分光光度测量用于得出将打印机着色剂的任意任意组合与预测的UV颜色外观值相关联的UV打印机表征模型。 可以使用UV模型和传统的可见光打印机表征模型来确定用于可见光和UV光观察的Metameric着色剂混合物对。 使用视觉匹配任务来确定UV打印机表征模型的校正因子。

公开(公告)号：US20090195796A1

公开(公告)日：2009-08-06

申请号：US12024208

申请日：2008-02-01

申请人： VISHAL MONGA ,  Raja Bala

发明人： VISHAL MONGA ,  Raja Bala

IPC分类号： G06F15/00

CPC分类号： G06K9/00442

摘要： What is provided herein is a method for automatically selecting a subset of pages from a multi-page document for image processing wherein each selected page is substantially different from all other pages according to certain features of interest and wherein the combined content of the selected pages approximately represents the content in the entire document. Selected pages are clustered wherein each page is represented by a feature vector meaningfully related to the task to be performed. A matrix of feature vectors is analyzed. Basis vectors are extracted from the matrix using rank-reduction techniques. Clustering is performed by subspace projection of page features onto the basis vectors with each page being assigned to a cluster to which that page maximally projects. Representative pages are selected from each cluster. The representative pages can then be used as input to a secondary process.

摘要翻译： 这里提供的是用于从用于图像处理的多页文档中自动选择页面子集的方法，其中根据感兴趣的某些特征，每个所选择的页面与所有其他页面基本不同，并且其中所选择的页面的组合内容大约 表示整个文档中的内容。 所选页面被聚集，其中每个页面由与要执行的任务有意义相关的特征向量表示。 分析特征向量矩阵。 使用秩降低技术从矩阵中提取基础向量。 通过将页面特征的子空间投影到基本向量上执行聚类，每个页面被分配给该页面最大程度投射到的群集。 从每个群集中选择代表页面。 然后可以将代表性页面用作次要过程的输入。