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1. 发明授权

US07929161B2 Image processing system and method 失效
标题翻译：图像处理系统和方法
公开(公告)号：US07929161B2
公开(公告)日：2011-04-19
申请号：US10825452
申请日：2004-04-15
申请人： Yifeng Wu , Kevin R. Hudson
发明人： Yifeng Wu , Kevin R. Hudson
IPC分类号： G06F3/12 , G06K9/00
CPC分类号： H04N1/32502 , G06F3/1208 , G06F3/1263 , G06F3/1285 , H04N1/32523 , H04N1/3255
摘要： A printing control system includes a plurality of printing units, an image source, and a system processing unit. The image source provides a print job comprising a plurality of images to the system processing unit. The system processing unit receives the plurality of images in the print job from the image source, and calculates an image histogram for each image in the print job. The system processing unit then determines the similarity of the images in the print job by comparing the calculated histograms. The system processing unit then classifies the images into classes based on the comparison, and sends the classes of images to the printing units.
摘要翻译：打印控制系统包括多个打印单元，图像源和系统处理单元。图像源向系统处理单元提供包括多个图像的打印作业。系统处理单元从图像源接收打印作业中的多个图像，并计算打印作业中每个图像的图像直方图。然后，系统处理单元通过比较计算的直方图来确定打印作业中图像的相似性。然后，系统处理单元基于比较将图像分类为类，并将图像的类别发送到打印单元。

2. 发明授权

US07023584B2 Color calibration method and apparatus 有权
标题翻译：颜色校准方法和装置
公开(公告)号：US07023584B2
公开(公告)日：2006-04-04
申请号：US09969682
申请日：2001-10-02
申请人： Philip B Cowan , Kevin R Hudson
发明人： Philip B Cowan , Kevin R Hudson
IPC分类号： B41J1/00 , G06F15/00 , G06K9/00
CPC分类号： H04N1/6033
摘要： A method, includes depositing a first quantity of a first colorant corresponding to a first color value and a second quantity of a second colorant corresponding to a second color value on a region of media, determining a value related to a hue of the region, determining a difference between the value and a predetermined value. In addition, the method includes changing an association between the first color value and a first colorant quantity value, corresponding to the first quantity of the first colorant, according to the difference. An apparatus includes a spectral measurement device configured to generate output corresponding to a spectral content of light reflected from a region on media formed by depositing a first quantity of a first colorant and a second quantity of a second colorant onto the media. In addition, the apparatus includes a memory to store a plurality of color values and a corresponding plurality of first colorant quantity values. Furthermore, the apparatus includes a a processing device coupled to the memory and arranged to receive the output from the spectral measurement device and configured to determine a value related to a hue of the region using the output, configured to determine a difference between the value and a predetermined value, and configured to change an association between the plurality of color values and the plurality of first colorant quantity values according to the difference.
摘要翻译：一种方法包括在介质区域上沉积第一量对应于第一颜色值的第一着色剂和对应于第二颜色值的第二着色剂，确定与该区域的色相相关的值，确定该值与预定值之间的差。此外，该方法包括根据该差异来改变与第一着色剂的第一量对应的第一颜色值和第一着色剂量值之间的关联。一种装置包括光谱测量装置，其被配置为产生对应于从通过将第一量的第一着色剂和第二量的第二着色剂沉积到介质上而形成的介质上的区域的光的光谱含量的光谱含量。此外，该装置包括存储多个颜色值的存储器和相应的多个第一着色剂量值。此外，该装置包括耦合到存储器并被配置为接收来自频谱测量装置的输出并被配置为使用该输出来确定与该区域的色相相关的值的处理装置，该值被配置为确定该值与一个并且被配置为根据差异来改变多个颜色值和多个第一着色剂量值之间的关联。

3. 发明授权

US5025325A Graphics scaling method for high resolution printers 失效
标题翻译：高分辨率打印机的图形缩放方法
公开(公告)号：US5025325A
公开(公告)日：1991-06-18
申请号：US421040
申请日：1989-10-13
申请人： Kevin R. Hudson
发明人： Kevin R. Hudson
IPC分类号： B41J2/485 , G06K15/00 , G06T3/40 , H04N1/387
CPC分类号： G06K15/00 , G06T3/40 , G06K2215/0071
摘要： The invented method scales a graphics image by recognizing under what resolution the image was created, identifying the resolution of the printer that will actually print the image, calculating a convenient virtual resolution, approximating, on a pixel-by-pixel basis, using the virtual resolution, how many new pixels are required to emulate each existing pixel and then storing the new pixels in memory or printing them.

4. 发明授权

US06980328B2 Direction-dependent color conversion in bidirectional printing 有权
标题翻译：双向打印方向依赖的颜色转换
公开(公告)号：US06980328B2
公开(公告)日：2005-12-27
申请号：US09899466
申请日：2001-07-05
申请人： Kevin R Hudson
发明人： Kevin R Hudson
IPC分类号： B41J2/21 , B41J2/01 , B41J2/51 , B41J19/14 , G06K15/10 , G06F15/00
CPC分类号： G06K15/102 , B41J19/142 , G06K2215/0094
摘要： A color printing system and method for reducing bidirectional hue shift in inkjet printing. A set of data channels for the ink colors of the system is generated, including at least one print-direction-independent data channel, and at least one pair of print-direction-dependent data channels. A print controller receives the set of data channels for printing, and selects the print-direction-independent data channels, and one of each pair of print-direction-dependent data channels, to provide the data for printing in each opposite scanning direction of the print engine.
摘要翻译：一种用于减少喷墨打印中的双向色相偏移的彩色打印系统和方法。生成用于系统的墨水颜色的一组数据通道，包括至少一个与打印方向无关的数据通道，以及至少一对打印方向相关数据通道。打印控制器接收用于打印的一组数据通道，并且选择打印方向独立的数据通道和每对打印方向相关数据通道中的一个，以提供用于在每个相反的扫描方向上打印的数据打印引擎。

5. 发明授权

US06441922B1 Reduction of banding in incremental printing, through selection among colorimetric equivalents 失效
标题翻译：通过比色等效选择减少增量打印中的条带
公开(公告)号：US06441922B1
公开(公告)日：2002-08-27
申请号：US09184577
申请日：1998-10-31
申请人： Ronald A Askeland , Kevin R Hudson , Thomas S. Hoff
发明人： Ronald A Askeland , Kevin R Hudson , Thomas S. Hoff
IPC分类号： G06K1500
CPC分类号： H04N1/40087 , G06K15/107 , G06K2215/0094
摘要： Apparatus and method establish two or more selectable colorimetrically equivalent printmasks, and—from among those—select masks for use. An image-processing stage assigns inking spatially among pixels; each mask sets temporal assignments, among print passes, of the spatially assigned inking. Selected masks are used, for successive pixels, in a randomized sequence. The image is defined as an array of input colorimetric levels, each one selectably mapped to any one of plural colorimetrically equivalent masks. Plural colorimetrically equivalent levels are defined, and then assigned (through a randomized procedure) to particular masks. The image is prepared using a pixel grid coarser than the available printer resolution; and the plural equivalent masks formed by varying allocation of printer passes among pixels of the coarser grid.
摘要翻译：装置和方法建立两个或多个可选择的比色等效印刷掩模，并且从这些选择掩模中使用。图像处理阶段在像素之间空间分配墨迹; 每个掩码设置空间分配的墨迹的打印通行证中的时间分配。随机序列使用所选掩模，用于连续像素。该图像被定义为输入比色水平的阵列，每个可选择地映射到多个比色相当的掩模中的任何一个。定义多个比色等效水平，然后通过随机程序分配给特定的掩模。使用比可用打印机分辨率更粗糙的像素网格准备图像; 以及通过在较粗网格的像素之间改变打印机通过分配而形成的多个等效掩模。

6. 发明授权

US6042211A Ink drop volume variance compensation for inkjet printing 失效
标题翻译：喷墨打印的墨滴体积方差补偿
公开(公告)号：US6042211A
公开(公告)日：2000-03-28
申请号：US978040
申请日：1997-11-25
申请人： Kevin R. Hudson , Philip B Cowan , Jay S Gondek
发明人： Kevin R. Hudson , Philip B Cowan , Jay S Gondek
IPC分类号： B41J2/21 , H04N1/50 , H04N1/60 , B41J2/205
CPC分类号： H04N1/6016 , B41J2/2128 , H04N1/502 , H04N1/603
摘要： A printing technique is disclosed which takes into account the actual ink drop volumes of the print cartridges used in an inkjet printer. In one embodiment, each of the print cartridges is tested by the manufacturer, and its actual ink drop volume is determined. This actual ink drop volume, or the variance from the nominal ink drop volume, is encoded on the print cartridge itself using any number of techniques. The host computer, which converts RGB tone values to CMYK ink tone values to be printed, reads the information regarding the ink drop volume and adjusts the CMYK tone values as necessary to compensate for the variance in the ink drop volumes. Accordingly, the printer and host computer will adjust the number of CMYK ink drops printed for a particular pixel position on the medium based upon the actual ink drop volumes for the color print cartridges used in the printer.
摘要翻译：公开了一种打印技术，其考虑了在喷墨打印机中使用的打印墨盒的实际墨滴体积。在一个实施例中，每个打印墨盒由制造商进行测试，并确定其实际的墨滴体积。使用任何数量的技术，这种实际的墨滴体积或者与标称墨滴体积的差异被编码在打印墨盒本身上。将RGB色调值转换为要打印的CMYK墨水色调值的主机读取关于墨滴量的信息，并根据需要调整CMYK色调值，以补偿墨滴体积的变化。因此，打印机和主计算机将基于打印机中使用的彩色墨盒的实际墨滴量来调整为介质上的特定像素位置打印的CMYK墨滴的数量。

7. 发明授权

US07355745B2 Document-to-printer color gamut matching 失效
标题翻译：文件到打印机色域匹配
公开(公告)号：US07355745B2
公开(公告)日：2008-04-08
申请号：US09835163
申请日：2001-04-13
申请人： Kevin R. Hudson , Huanzhoa Zeng
发明人： Kevin R. Hudson , Huanzhoa Zeng
IPC分类号： H04N1/60 , H04N1/54 , H04N1/56 , G09G5/02 , G09G5/06
CPC分类号： H04N1/60 , H04N1/603 , H04N1/6058
摘要： A document-to-printer color gamut matching system enables comparison of at least two color maps in a manner that allows selection of the printer that will result in the best print output. Information related to the document to be printed and information describing the color gamut(s) that each available printer is capable of printing is compared. Each color gamut is evaluated to determine suitability for use with the document. The document-to-printer gamut matching system may provide the author of the document with a number of candidate printers best matched to the printing of the document depending on the rendering intent of the author; may select a printer based on a measurement of best fit; or may generate a custom color map to result in a color gamut that is satisfactory.
摘要翻译：文档到打印机色域匹配系统使得能够以允许选择将导致最佳打印输出的打印机的方式来比较至少两个颜色图。与要打印的文档相关的信息和描述可用打印机能够打印的色域的信息进行比较。评估每个色域以确定与文档一起使用的适用性。文档到打印机色域匹配系统可以根据作者的渲染意图向文档的作者提供与文档的打印最佳匹配的多个候选打印机; 可以根据最佳拟合度量来选择打印机; 或者可以生成自定义颜色映射以产生令人满意的色域。

8. 发明授权

US06801337B2 Tone dependent variable halftoning with adjustable algorithm selection 失效
标题翻译：音调依赖变量半色调与可调整的算法选择
公开(公告)号：US06801337B2
公开(公告)日：2004-10-05
申请号：US10458107
申请日：2003-06-09
申请人： Ranjit Bhaskar , Kevin R. Hudson , Jay S Gondek
发明人： Ranjit Bhaskar , Kevin R. Hudson , Jay S Gondek
IPC分类号： G06F1500
CPC分类号： H04N1/52
摘要： Optimally determined halftoning algorithms are applied to tone values by selecting among combinations of at least two algorithms that best address the tradeoff between output quality and rendering performance. Input tone values are scrutinized and matched with the algorithm combination that processes the associated tone values in a manner that increases performance (including data compressibility) without sacrificing output quality. The selection process is computationally simple and fast. Reliability is ensured because the combinations of halftoning algorithms are tabulated as a result of analysis of test samples of the printed output.
摘要翻译：通过选择最佳地解决输出质量和渲染性能之间权衡的至少两种算法的组合，将最佳确定的半色调算法应用于色调值。输入音调值被仔细检查，并与以不影响输出质量的方式提高性能（包括数据压缩性）的方式处理相关音调值的算法组合相匹配。选择过程计算简单快捷。由于打印输出的测试样本的分析结果列出了半色调算法的组合，因此确保了可靠性。

9. 发明授权

US07190827B2 Color space conversion using interpolation 失效
标题翻译：使用插值进行色彩空间转换
公开(公告)号：US07190827B2
公开(公告)日：2007-03-13
申请号：US10349880
申请日：2003-01-22
申请人： Huanzhao Zeng , Kevin R. Hudson , Dongli Yang
发明人： Huanzhao Zeng , Kevin R. Hudson , Dongli Yang
IPC分类号： G06K9/00 , G06K15/00 , H04N1/60 , H04N1/46 , G03F3/08
CPC分类号： H04N1/6025
摘要： A color space conversion technique uses a set of control lines in a first color space. Each control line includes several control points having predetermined values in a second color space. A planar region is identified among the set of control lines in the first color space. The planar region contains a number of target points that are to be interpolated from the first color space to the second color space. The planar region is partitioned into at least a first area and a quadrangular area. Target points in the quadrangular area correspond to a different set of colorants from the second color space than target points in the first area. A quadrangular interpolation is applied to the target points in the quadrangular area to determine corresponding values in the second color space based at least in part on the predetermined values of control points bounding the quadrangular area.
摘要翻译：颜色空间转换技术在第一颜色空间中使用一组控制线。每个控制线包括在第二颜色空间中具有预定值的若干控制点。在第一颜色空间中的控制线组中识别平面区域。平面区域包含将从第一颜色空间内插到第二颜色空间的多个目标点。平面区域被划分成至少第一区域和四边形区域。四边形区域中的目标点对应于与第一区域中的目标点不同的第二颜色空间的着色剂组。四边形内插被应用于四边形区域中的目标点，以至少部分地基于限定四边形区域的控制点的预定值来确定第二颜色空间中的相应值。

10. 发明授权

US06661533B1 Tone dependent variable halftoning with adjustable algorithm selection 有权
标题翻译：音调依赖变量半色调与可调整的算法选择
公开(公告)号：US06661533B1
公开(公告)日：2003-12-09
申请号：US09338847
申请日：1999-06-23
申请人： Ranjit Bhaskar , Kevin R. Hudson , Jay S Gondek
发明人： Ranjit Bhaskar , Kevin R. Hudson , Jay S Gondek
IPC分类号： G06R1500
CPC分类号： H04N1/52
摘要： Optimally determined halftoning algorithms are applied to tone values by selecting among combinations of at least two algorithms that best address the tradeoff between output quality and rendering performance. Input tone values are scrutinized and matched with the algorithm combination that processes the associated tone values in a manner that increases performance (including data compressibility) without sacrificing output quality. The selection process is computationally simple and fast. Reliability is ensured because the combinations of halftoning algorithms are tabulated as a result of analysis of test samples of the printed output.
摘要翻译：通过选择最佳地解决输出质量和渲染性能之间权衡的至少两种算法的组合，将最佳确定的半色调算法应用于色调值。输入音调值被仔细检查，并与以不影响输出质量的方式提高性能（包括数据压缩性）的方式处理相关音调值的算法组合相匹配。选择过程计算简单快捷。由于打印输出的测试样本的分析结果列出了半色调算法的组合，因此确保了可靠性。

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