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1. 发明申请

US20050271277A1 Method and system for image classification and halftone frequency detection 有权
标题翻译：用于图像分类和半色调频率检测的方法和系统
公开(公告)号：US20050271277A1
公开(公告)日：2005-12-08
申请号：US10861310
申请日：2004-06-04
申请人： Ying-Wei Lin , Shen-Ge Wang , Beilei Xu
发明人： Ying-Wei Lin , Shen-Ge Wang , Beilei Xu
IPC分类号： G03G15/00 , G06K9/20 , G06K9/34 , G06K9/46 , G06T7/40 , H04N1/40
CPC分类号： G06K9/00456 , H04N1/40062
摘要： A system and method for classifying an image block of a printed image into contone, halftone, or error diffusion classes, includes scanning the printed image; selecting an n by n block of pixels from the scanned image in a luminance channel; calculating an array of DCT coefficients of the pixel block, wherein the calculated DCT coefficients are representative of spatial frequency and spatial orientation of the pixel block; comparing the array of DCT coefficients with an array of predetermined values, wherein the array of predetermined values are indicative of contone, halftone and error diffusion classes; and determining the image classification of the pixel block based on the comparison of the DCT coefficients with the array of predetermined values. If the image is determined to be halftone, then the method further evaluates the DCT coefficients to determine the frequency of the halftone screen.
摘要翻译：将印刷图像的图像块分类为连续色调，半色调或误差扩散等级的系统和方法包括扫描印刷图像; 在亮度通道中从扫描图像中选择n×n个像素块; 计算所述像素块的DCT系数的阵列，其中所计算的DCT系数表示所述像素块的空间频率和空间取向; 将DCT系数阵列与预定值的阵列进行比较，其中预定值的阵列指示连续色调，半色调和误差扩散等级; 以及基于DCT系数与预定值的阵列的比较来确定像素块的图像分类。如果图像被确定为半色调，则该方法进一步评估DCT系数以确定半色调屏幕的频率。

2. 发明授权

US07424151B2 Method and system for image classification and halftone frequency detection 有权
标题翻译：图像分类和半色调频率检测方法与系统
公开(公告)号：US07424151B2
公开(公告)日：2008-09-09
申请号：US10861310
申请日：2004-06-04
申请人： Ying-Wei Lin , Shen-Ge Wang , Beilei Xu
发明人： Ying-Wei Lin , Shen-Ge Wang , Beilei Xu
IPC分类号： G06K9/34
CPC分类号： G06K9/00456 , H04N1/40062
摘要： A system and method for classifying an image block of a printed image into contone, halftone, or error diffusion classes, includes scanning the printed image; selecting an n by n block of pixels from the scanned image in a luminance channel; calculating an array of DCT coefficients of the pixel block, wherein the calculated DCT coefficients are representative of spatial frequency and spatial orientation of the pixel block; comparing the array of DCT coefficients with an array of predetermined values, wherein the array of predetermined values are indicative of contone, halftone and error diffusion classes; and determining the image classification of the pixel block based on the comparison of the DCT coefficients with the array of predetermined values. If the image is determined to be halftone, then the method further evaluates the DCT coefficients to determine the frequency of the halftone screen.
摘要翻译：将印刷图像的图像块分类为连续色调，半色调或误差扩散等级的系统和方法包括扫描印刷图像; 在亮度通道中从扫描图像中选择n×n个像素块; 计算所述像素块的DCT系数的阵列，其中所计算的DCT系数表示所述像素块的空间频率和空间取向; 将DCT系数阵列与预定值的阵列进行比较，其中预定值的阵列指示连续色调，半色调和误差扩散等级; 以及基于DCT系数与预定值的阵列的比较来确定像素块的图像分类。如果图像被确定为半色调，则该方法进一步评估DCT系数以确定半色调屏幕的频率。

3. 发明授权

US07382495B2 Reduction of differential gloss 有权
标题翻译：减少差别光泽度
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。

4. 发明申请

US20060044617A1 Reduction of differential gloss with halftoned clear toner 有权
标题翻译：用半色调透明调色剂减少差别光泽度
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。

5. 发明申请

US20050128524A1 Enhancement of glossmark images at low and high densities 有权
标题翻译：在低密度和高密度下增强光泽标记图像
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。

6. 发明授权

US08451501B2 Watermark decoding via spectral analysis of pixel spacing 有权
标题翻译：通过像素间隔的频谱分析进行水印解码
公开(公告)号：US08451501B2
公开(公告)日：2013-05-28
申请号：US12966244
申请日：2010-12-13
申请人： Beilei Xu , Joseph C. Sheflin , Shen-Ge Wang , Robert P. Loce , Jack T. LeStrange
发明人： Beilei Xu , Joseph C. Sheflin , Shen-Ge Wang , Robert P. Loce , Jack T. LeStrange
IPC分类号： H04N1/405 , H04N1/40 , G06K9/00 , G06K9/46
CPC分类号： G06T1/0092 , G06T2201/0051
摘要： Provided are methods, apparatus and systems related to watermark decoding via spectral analysis of an image. According to one exemplary method, spectral analysis is performed to decode a watermark within an image, where the pixel spacing associated with the image was modulated to encode the watermark.
摘要翻译：提供了通过图像的光谱分析与水印解码相关的方法，装置和系统。根据一个示例性方法，执行频谱分析以对图像内的水印进行解码，其中与图像相关联的像素间隔被调制以对水印进行编码。

7. 发明申请

US20080079971A1 ENHANCEMENT OF GLOSSMARK IMAGES AT LOW AND HIGH DENSITIES WITH SELECTIVE APPLICATION OF CLEAR TONER 有权
标题翻译：通过选择性应用清晰度调整器，在低和高密度下增强GLOSSMARK图像
公开(公告)号：US20080079971A1
公开(公告)日：2008-04-03
申请号：US11949307
申请日：2007-12-03
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： G06F15/00
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 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来扩大图像浓度的范围，可以在低密度和高密度区域增强该技术，期望的光泽图像将在其上产生影响。

8. 发明授权

US07352493B2 Enhancement of glossmark images at low and high densities 有权
标题翻译：在低密度和高密度下增强光泽标记图像
公开(公告)号：US07352493B2
公开(公告)日：2008-04-01
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： H04N1/405 , H04N1/52 , B41M3/10
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。

9. 发明授权

US08451500B2 Watermark encoding via pixel spacing modulation 有权
标题翻译：通过像素间隔调制进行水印编码
公开(公告)号：US08451500B2
公开(公告)日：2013-05-28
申请号：US12966164
申请日：2010-12-13
申请人： Beilei Xu , Joseph C Sheflin , Jack T LeStrange , Robert P Loce , Shen-Ge Wang
发明人： Beilei Xu , Joseph C Sheflin , Jack T LeStrange , Robert P Loce , Shen-Ge Wang
IPC分类号： H04N1/405 , G03F3/08 , G06K9/00
CPC分类号： H04N1/32219 , H04N1/32256
摘要： Provided are methods, apparatus and systems related to watermark encoding via pixel spacing modulation. According to one exemplary embodiment, a method modulates the pixel spacing associated with an image to encode a watermark.
摘要翻译：提供了通过像素间隔调制与水印编码相关的方法，装置和系统。根据一个示例性实施例，一种方法调制与图像相关联的像素间隔以编码水印。

10. 发明申请

US20120147429A1 WATERMARK ENCODING VIA PIXEL SPACING MODULATION 有权
标题翻译：水印通过像素空间调制编码
公开(公告)号：US20120147429A1
公开(公告)日：2012-06-14
申请号：US12966164
申请日：2010-12-13
申请人： Beilei Xu , Joseph C. Sheflin , Jack T. Lestrange , Robert P. Loce , Shen-Ge Wang
发明人： Beilei Xu , Joseph C. Sheflin , Jack T. Lestrange , Robert P. Loce , Shen-Ge Wang
IPC分类号： H04N1/405 , H04N1/40 , G06K9/00
CPC分类号： H04N1/32219 , H04N1/32256
摘要： Provided are methods, apparatus and systems related to watermark encoding via pixel spacing modulation. According to one exemplary embodiment, a method modulates the pixel spacing associated with an image to encode a watermark.
摘要翻译：提供了通过像素间隔调制与水印编码相关的方法，装置和系统。根据一个示例性实施例，一种方法调制与图像相关联的像素间隔以编码水印。

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