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公开(公告)号：US06744534B1
公开(公告)日：2004-06-01
申请号：US09562775
申请日：2000-05-02
IPC分类号： G06F1500
CPC分类号： G06T11/001 , H04N1/6058
摘要： A method and color image processor for rendering a color image includes selective blending between transforms or rendering intents. Based on a pixels location within a color gamut of a first device the pixel is mapped to a color gamut of a second device as directed by a first transform or rendering intent, a second transform or rendering intent or a blend between the first and second transforms.
摘要翻译： 用于渲染彩色图像的方法和彩色图像处理器包括变换或呈现意图之间的选择性混合。 基于第一设备的色域内的像素位置，像素被映射到由第一变换或渲染意图指示的第二设备的色域，第二变换或渲染意图或第一和第二变换之间的混合 。
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22.发明授权Graphical user interface for color transformation table editing that avoids reversal artifacts 失效用于颜色转换表编辑的图形用户界面，可避免反转伪像公开(公告)号：US06731796B2
公开(公告)日：2004-05-04
申请号：US09731338
申请日：2000-12-06
IPC分类号： G06K900
CPC分类号： H04N1/6027 , H04N1/622
摘要： A transformation function defines a relationship between a first color space and a second color space. The transformation function is edited by producing first and second outputs of an image in the first and second color spaces, respectively. The outputs are related in accordance with the transformation function. A portion of the first output, which corresponds to a portion of the second output including a color to be modified, is selected via a graphical user interface. A desired amount to modify the color is specified. A correction function is determined in accordance with the desired amount. The transformation table is edited in accordance with the monotonic correction function.
摘要翻译： 变换函数定义第一颜色空间和第二颜色空间之间的关系。 通过分别在第一和第二颜色空间中产生图像的第一和第二输出来编辑变换函数。 输出根据变换函数相关。 通过图形用户界面选择第一输出的对应于包括要修改的颜色的第二输出的一部分的一部分。 指定修改颜色的所需数量。 根据期望的量确定校正功能。 变换表根据单调校正函数进行编辑。
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公开(公告)号：US06646762B1
公开(公告)日：2003-11-11
申请号：US09435308
申请日：1999-11-05
IPC分类号： G06F1300
CPC分类号： H04N1/6058
摘要： A color printing process, printing a color image in which out-of-gamut original colors are present. For each pixel defined by an original color which is determined to be out of gamut, a gamut remapping process is applied to map each pixel to a color which is within a printer gamut, remapping said pixels to colors within an output printer gamut. For a given set of gamut remapped pixels, gamut remapped pixel colors are compared with said original pixel colors, to derive a comparison metric. Using the comparison metric, a corrected set of gamut remapped colors is generated. The comparison metric may be subjected to an adaptive filtering process, which strengthens the comparison metric in high frequency image regions to increase its impact on the gamut remapped colors, and weakens the comparison metric in low frequency areas, to weaken its impact on the gamut remapped colors.
摘要翻译： 彩色打印处理，打印出色域原色的彩色图像。 对于被确定为超出色域的原始颜色限定的每个像素，应用色域重新映射处理以将每个像素映射到在打印机色域内的颜色，将所述像素重新映射到输出打印机色域内的颜色。 对于给定的色域重映射像素集合，将色域重新映射的像素颜色与所述原始像素颜色进行比较，以导出比较度量。 使用比较度量，生成校正的色域重映射颜色集合。 比较度量可以进行自适应滤波处理，其加强了高频图像区域中的比较度量，以增加其对色域重映射颜色的影响，并且削弱了低频区域中的比较度量，以削弱其对色域重新映射的影响 颜色。
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公开(公告)号：US06307645B1
公开(公告)日：2001-10-23
申请号：US09218771
申请日：1998-12-22
IPC分类号： H04N152
CPC分类号： H04N1/52
摘要： In a hi-fi color printing system, an inverted halftone screen is provided having the same angle and frequency as a halftone screen for an opposing color. The dots of the inverse halftone screen are configured to be located midway between the centers of the dots of the half-tone screen. The halftone screen and inverted halftone screen are used in the printing process to extend the gamut of colors within a printing system, render improved neutral colors, and provide an improved transition through neutral regions of color space. The present invention allows for additional printing of multiple colors without the need for increasing the number of screens used in the image processing system.
摘要翻译： 在高保真彩色打印系统中，提供具有与相对颜色的半色调屏幕相同的角度和频率的倒置半色调屏幕。 反半色调屏幕的点被配置为位于半色调屏幕的点的中心之间的中间。 在打印过程中使用半色调屏幕和倒置的半色调屏幕来扩展打印系统内的色彩范围，改善中性色彩，并通过色彩空间的中性区域提供改进的转换。 本发明允许多种颜色的附加打印，而不需要增加在图像处理系统中使用的屏幕的数量。
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公开(公告)号：US6097838A
公开(公告)日：2000-08-01
申请号：US306162
申请日：1999-05-06
IPC分类号： H04N11/04 , H04N1/41 , H04N1/46 , H04N1/60 , H04N7/30 , G06K9/00 , G03F3/08 , G06K9/36 , G06K9/38 , G06K9/46
摘要： The present invention is a method for the color correction of digital images that have been compressed. In a preferred embodiment, aspects of the color correction are carried out on the compressed image data to improve computational efficiency. One of a number of alternative methods is employed to accomplish the color correction on lossy or losslessly compressed images. The color transformation process accomplishes color correction on compressed image data in conjunction with compression or decompression operations. A second, simplified phase of the color correction may be applied subsequently to the decompressed image data in certain embodiments. Accordingly, the technique has application to any number of color imaging systems, including digital printers and copiers where there is a necessity to color correct compressed digital images
摘要翻译： 本发明是一种已被压缩的数字图像的颜色校正方法。 在优选实施例中，对压缩图像数据执行颜色校正的方面以提高计算效率。 采用多种替代方法之一来实现有损或无损压缩图像上的色彩校正。 颜色转换处理结合压缩或解压缩操作对压缩图像数据进行颜色校正。 在某些实施例中，随后可以对解压缩的图像数据应用颜色校正的第二简化阶段。 因此，该技术适用于任何数量的彩色成像系统，包括数字打印机和复印机，其中需要对正确的压缩数字图像进行着色
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26.发明授权Image rendering system and associated method for minimizing contours in a quantized digital color image 失效用于最小化量化数字彩色图像中的轮廓的图像渲染系统和相关联的方法
公开(公告)号：US5598482A
公开(公告)日：1997-01-28
申请号：US243433
申请日：1994-05-16
摘要： The apparatus and method of the present invention quickly determines the presence of contours in a digital color image by determining the busy and the non-busy (smooth) regions of the original digital color image and determining the luminance variations in the smooth regions of the original digital color image and in a quantized version of the original digital color image. The difference between the luminance variations is compared against a selected threshold value, which if exceeded causes a mark to be associated with the pixel under consideration. For each pixel of the quantized digital color image that is associated with the mark or has a mark associated with a neighboring pixel in a window around the pixel of interest the color of the pixel is selected to minimize and or remove the contour.
摘要翻译： 本发明的装置和方法通过确定原始数字彩色图像的繁忙和非忙（平滑）区域并且确定原始数字彩色图像的平滑区域中的亮度变化来快速地确定数字彩色图像中轮廓的存在 数字彩色图像和原始数字彩色图像的量化版本。 将亮度变化之间的差异与所选择的阈值进行比较，如果超过，则会使标记与所考虑的像素相关联。 对于与标记相关联的量化数字彩色图像的每个像素，或者具有与感兴趣像素周围的窗口中的相邻像素相关联的标记，选择像素的颜色以最小化和/或去除轮廓。
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公开(公告)号：US20060028699A1
公开(公告)日：2006-02-09
申请号：US11247552
申请日：2005-10-11
CPC分类号： H04N1/6033 , H04N2201/3269
摘要： A color calibration job identification system and method are provided, wherein the job identification data is encoded on a printed page, in a patch code, along with color targets, according to a protocol and format approximately identical to a format of the color targets. The patch code comprises a first portion, including a start code, and a second portion, including job identification data. The first portion of the patch code is comprised of two or more small color patches, each having a predefined color. The second portion of the patch code is comprised of two or more small color patches wherein each of the patches is comprised of a color selected from a plurality of colors, wherein each of the colors is indicative of a unique datum value, preferably an octal digit. The system provides a means for determining correct functioning of a printer and a means for determining an orientation of a printed page in a scanning device.
摘要翻译： 提供了一种颜色校准作业识别系统和方法，其中根据与彩色目标的格式大致相同的协议和格式，将作业识别数据与打印页面，拼图代码以及颜色目标一起编码。 补丁码包括包括起始码的第一部分和包括作业识别数据的第二部分。 补丁代码的第一部分由两个或更多个小颜色补丁组成，每个都有一个预定义的颜色。 补丁代码的第二部分由两个或更多个小的色块构成，其中每个补丁由选自多种颜色的颜色组成，其中每种颜色指示唯一的基准值，优选地是八进制数 。 该系统提供用于确定打印机的正确功能的装置和用于确定扫描装置中的打印页面的方位的装置。
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28.发明授权Gamut mapping preserving local luminance differences with adaptive spatial filtering 失效色域映射保留局部亮度差与自适应空间滤波公开(公告)号：US06954287B1
公开(公告)日：2005-10-11
申请号：US09435256
申请日：1999-11-05
CPC分类号： H04N1/6058
摘要： A color printing process, printing a color image in which out-of-gamut original colors are present. For each pixel defined by an original color which is determined to be out of gamut, a gamut remapping process is applied to map each pixel to a color which is within a printer gamut, remapping said pixels to colors within an output printer gamut. For a given set of gamut remapped pixels, gamut remapped pixel colors are compared with said original pixel colors, to derive a comparison metric. Using the comparison metric, a corrected set of gamut remapped colors is generated. The comparison metric may be subjected to an adaptive filtering process, which strengthens the comparison metric in high frequency image regions to increase its impact on the gamut remapped colors, and weakens the comparison metric in low frequency areas, to weaken its impact on the gamut remapped colors. The filter is selected by determining a filter selection metric in accordance with measured local image activity and changing filter parameters as a function of the determined filter selection metric.
摘要翻译： 彩色打印处理，打印出色域原色的彩色图像。 对于被确定为超出色域的原始颜色限定的每个像素，应用色域重新映射处理以将每个像素映射到在打印机色域内的颜色，将所述像素重新映射到输出打印机色域内的颜色。 对于给定的色域重映射像素集合，将色域重新映射的像素颜色与所述原始像素颜色进行比较，以导出比较度量。 使用比较度量，生成校正的色域重映射颜色集合。 比较度量可以进行自适应滤波处理，其加强了高频图像区域中的比较度量，以增加其对色域重映射颜色的影响，并且削弱了低频区域中的比较度量，以削弱其对色域重新映射的影响 颜色。 通过根据测量的本地图像活动确定滤波器选择度量并根据所确定的滤波器选择度量来改变滤波器参数来选择滤波器。
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公开(公告)号：US06654143B1
公开(公告)日：2003-11-25
申请号：US09429444
申请日：1999-10-28
申请人： Edul N. Dalal , Thyagarajan Balasubramanian , D. Rene Rasmussen , Gaurav Sharma , Mark Q. Shaw , Michael E. Farrell , David C. Robinson
发明人： Edul N. Dalal , Thyagarajan Balasubramanian , D. Rene Rasmussen , Gaurav Sharma , Mark Q. Shaw , Michael E. Farrell , David C. Robinson
IPC分类号： G06F1500
CPC分类号： H04N1/6097 , H04N1/603
摘要： A method of adjusting an image production system to account for a variable property of a desired output medium includes storing a reference characterization of at least one measured value associated with a reference output medium. An output value, adjusted for the variable property of the desired output medium, is determined based on data including the reference characterization of the reference output medium, for example stored in color lookup tables, color rendering dictionaries, or the like. Based on the adjusted output value determined, the desired output medium is then printed or otherwise marked using the output value.
摘要翻译： 调整图像生成系统以考虑期望输出介质的可变属性的方法包括存储与参考输出介质相关联的至少一个测量值的参考表征。 基于包括参考输出介质的参考表征的数据，例如存储在颜色查找表，显色字典等中的数据来确定针对所需输出介质的可变属性调整的输出值。 基于所确定的调整后的输出值，然后使用输出值打印所需输出介质或以其他方式进行标记。
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公开(公告)号：US06621498B1
公开(公告)日：2003-09-16
申请号：US09703749
申请日：2000-11-01
IPC分类号： G09G506
CPC分类号： G09G5/06 , H04N1/6019 , H04N1/6058
摘要： A method of color transformation is based on non-separable tiling of a color transformation lookup table. Non-separable tiling allows the lookup table to have fine granularity where it is needed or desired and coarse granularity where it can be tolerated. Therefore, non-separable tiling of the lookup table provides improved transformation quality for a given lookup table size. The non-separable tiles are enumerated. An appropriate tile is selected for use in a color transformation by finding an intersection between lists of tiles associated with each value that comprises a particular pixel. In one embodiment, a tile or transformation rule is associated with bit position in a bit vector. Any particular parameter value may be associated with one or more tiles or transformation rules. Therefore, a particular bit vector associated with a particular parameter value may have a plurality of set bits.
摘要翻译： 颜色变换的方法是基于颜色变换查找表的不可分离的平铺。 不可分割的平铺允许查找表在需要或期望的地方具有精细的粒度，并且可以容忍粗粒度。 因此，查找表的不可分离的平铺为给定的查找表大小提供了改进的转换质量。 枚举不可分开的瓦片。 通过找到与包括特定像素的每个值相关联的瓦片列表之间的交集，选择适当的瓦片用于颜色变换。 在一个实施例中，瓦片或变换规则与比特向量中的比特位置相关联。 任何特定参数值可以与一个或多个瓦片或变换规则相关联。 因此，与特定参数值相关联的特定比特向量可以具有多个设置比特。
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