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公开(公告)号：US20130140354A1
公开(公告)日：2013-06-06
申请号：US13312386
申请日：2011-12-06
申请人： Zhigang Fan , Yonghui Zhao , Shen-ge Wang
发明人： Zhigang Fan , Yonghui Zhao , Shen-ge Wang
CPC分类号： G06K19/06037
摘要： A grayscale two-dimensional barcode may be converted to a two-dimensional color barcode. The color barcode includes a set of sub-regions, and the cells in each sub-region exhibits a color pattern that corresponds to pattern of binary, grayscale cells. The two-dimensional color barcode may be decoded by comparing the pattern for each sub-region to a known grayscale pattern. The two-dimensional color barcode may be used for error correction by first decoding the barcode in grayscale form based on the luminance without reference to color, then decoding the barcode based on its color and comparing the results.
摘要翻译： 灰度二维条形码可以被转换为二维彩色条形码。 彩色条形码包括一组子区域，并且每个子区域中的单元呈现对应于二进制灰度单元格的颜色图案。 可以通过将每个子区域的图案与已知的灰度图案进行比较来解码二维彩色条形码。 可以通过基于不参照颜色的亮度以灰度形式对条形码进行解码，然后基于其颜色对条形码进行解码并比较结果，可以将二维彩色条形码用于纠错。
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32.发明申请公开(公告)号：US20120293842A1
公开(公告)日：2012-11-22
申请号：US13108235
申请日：2011-05-16
申请人： Shen-ge Wang , Edgar A. Bernal , Robert P. Loce , Zhigang Fan
发明人： Shen-ge Wang , Edgar A. Bernal , Robert P. Loce , Zhigang Fan
IPC分类号： H04N1/405
CPC分类号： H04N1/4051 , H04N1/4092
摘要： As set forth herein, computer-implemented methods and systems facilitate halftoning by adapting 2nd generation halftone techniques to the spatial frequency content of an image utilizing a spot function introduced in conjunction with a technique for determining seed locations, which results in halftone images exhibiting improved edge and detail rendition. A dominant orientation of pixels in an input image is employed to select a pre-generated stochastic screen used to determine the seed locations.
摘要翻译： 如本文所述，计算机实现的方法和系统通过使用结合用于确定种子位置的技术引入的斑点函数使第二代半色调技术适应于图像的空间频率内容来促进半色调，这导致半色调图像表现出改善的边缘 和细节再现。 采用输入图像中的像素的主要取向来选择用于确定种子位置的预先生成的随机屏幕。
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公开(公告)号：US07800779B2
公开(公告)日：2010-09-21
申请号：US11314104
申请日：2005-12-21
申请人： Zhigang Fan , Lalit Keshav Mestha , Yao Rong Wang , Shen-ge Wang
发明人： Zhigang Fan , Lalit Keshav Mestha , Yao Rong Wang , Shen-ge Wang
CPC分类号： G06F15/00 , H04N1/6033 , H04N1/6036 , H04N1/6047
摘要： Disclosed are a system and method are directed to efficient image based color calibration and improving color consistency performance, and more particularly to the use of continuous or dynamic calibration performed during printing and enabling adjustment on a page by page basis.
摘要翻译： 公开了一种系统和方法涉及基于图像的有效色彩校准和改进色彩一致性性能，更具体地说，涉及在打印期间执行的连续或动态校准的使用以及逐页的启用调整。
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公开(公告)号：US20070139734A1
公开(公告)日：2007-06-21
申请号：US11314104
申请日：2005-12-21
申请人： Zhigang Fan , Lalit Mestha , Yao Wang , Shen-ge Wang
发明人： Zhigang Fan , Lalit Mestha , Yao Wang , Shen-ge Wang
IPC分类号： H04N1/46
CPC分类号： G06F15/00 , H04N1/6033 , H04N1/6036 , H04N1/6047
摘要： Disclosed are a system and method are directed to efficient image based color calibration and improving color consistency performance, and more particularly to the use of continuous or dynamic calibration performed during printing and enabling adjustment on a page by page basis.
摘要翻译： 公开了一种系统和方法涉及基于图像的有效色彩校准和改进色彩一致性性能，更具体地说，涉及在打印期间执行的连续或动态校准的使用以及逐页的启用调整。
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35.发明申请Method of embedding color information in printed documents using watermarking 失效使用水印嵌入打印文档中的颜色信息的方法公开(公告)号：US20050123194A1
公开(公告)日：2005-06-09
申请号：US11034131
申请日：2005-01-12
申请人： Zhigang Fan , Shen-ge Wang , Hui Cheng
发明人： Zhigang Fan , Shen-ge Wang , Hui Cheng
IPC分类号： H04N1/387 , G06T1/00 , H04N1/32 , H04N1/46 , H04N1/60 , G06K9/00 , G06K9/40 , G06K15/00 , G06T5/00 , H04N1/407
CPC分类号： H04N1/32309 , G06T1/0021 , G06T2201/0601 , H04N1/32144 , H04N1/32341 , H04N1/6033 , H04N2201/0081 , H04N2201/3242 , H04N2201/3271 , H04N2201/3283
摘要： A method for enhancing color fidelity in multi-reproduction, includes scanning an image to be reproduced, wherein the image contains an invisible digital watermark including color information; decoding the color information contained in the watermark; comparing the decoded color information with the scanned image; generating a correction table from the differences between the decoded color information and the scanned image; and performing color correction on the scanned image using the correction table. This method confines the color error to one generation, even when copies go through multiple reproduction.
摘要翻译： 一种用于增强多重再现中的色彩保真度的方法，包括扫描要再现的图像，其中图像包含包含颜色信息的不可见数字水印; 对包含在水印中的颜色信息进行解码; 将解码的颜色信息与扫描图像进行比较; 从解码的颜色信息和扫描图像之间的差异产生校正表; 并使用校正表对扫描图像执行颜色校正。 这种方法将颜色误差限制在一代，即使拷贝经过多重再现。
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公开(公告)号：US09100576B2
公开(公告)日：2015-08-04
申请号：US13459790
申请日：2012-04-30
申请人： Zhigang Fan , Yonghui Zhao , Shen-ge Wang , Hengzhou Ding
发明人： Zhigang Fan , Yonghui Zhao , Shen-ge Wang , Hengzhou Ding
CPC分类号： H04N5/23293 , G06K7/1452 , G06K9/3241 , G06K9/6204 , H04N5/23222
摘要： A method and device for receiving an image of a symbology captured by an imaging device, displaying an image of the symbology, displaying a boundary indicator around the symbology, adjusting the image size to correspond with the boundary indicator, decoding the symbology, and initiating an action by device.
摘要翻译： 一种用于接收由成像装置捕获的符号系统的图像的方法和装置，显示符号系统的图像，在符号系统周围显示边界指示符，调整图像大小以对应于边界指示符，解码符号系统，以及启动 按设备动作
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公开(公告)号：US09020200B2
公开(公告)日：2015-04-28
申请号：US13494302
申请日：2012-06-12
申请人： Zhigang Fan , Yonghui Zhao , Shen-ge Wang
发明人： Zhigang Fan , Yonghui Zhao , Shen-ge Wang
CPC分类号： G06K9/3258 , G06K9/3275 , G06T5/006
摘要： A method for adjusting a license plate that is detected in a captured image includes automatically determining at least one set of correction parameters corresponding to a slant-oriented license plate. The method further includes receiving an input image representing a detected license plate. In response to receiving the input image, the method includes automatically adjusting the input image to obtain a corrected image using the at least one set of correction parameters.
摘要翻译： 用于调整在拍摄图像中检测到的车牌的方法包括自动地确定与倾向于车牌的牌照对应的至少一组校正参数。 该方法还包括接收表示检测到的车牌的输入图像。 响应于接收到输入图像，该方法包括使用至少一组校正参数来自动调整输入图像以获得校正图像。
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公开(公告)号：US06956958B2
公开(公告)日：2005-10-18
申请号：US10082535
申请日：2002-02-21
申请人： Zhigang Fan , Shen-ge Wang , Hui Cheng
发明人： Zhigang Fan , Shen-ge Wang , Hui Cheng
CPC分类号： H04N1/32309 , G06T1/0021 , G06T2201/0601 , H04N1/32144 , H04N1/32341 , H04N1/6033 , H04N2201/0081 , H04N2201/3242 , H04N2201/3271 , H04N2201/3283
摘要： A method for enhancing color fidelity in multi-reproduction, includes scanning an image to be reproduced, wherein the image contains an invisible digital watermark including color information; decoding the color information contained in the watermark; comparing the decoded color information with the scanned image; generating a correction table from the differences between the decoded color information and the scanned image; and performing color correction on the scanned image using the correction table. This method confines the color error to one generation, even when copies go through multiple reproduction.
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39.发明授权Visible and invisible watermarking of printed images via 2nd generation stochastic seed frequency modulation 有权通过第二代随机种子频率调制的可见和不可见的水印印刷图像公开(公告)号：US08970910B2
公开(公告)日：2015-03-03
申请号：US13313329
申请日：2011-12-07
申请人： Edgar A. Bernal , Shen-ge Wang , Robert P. Loce , Zhigang Fan
发明人： Edgar A. Bernal , Shen-ge Wang , Robert P. Loce , Zhigang Fan
CPC分类号： G06T1/0028 , G06T2201/0051 , H04N1/32256
摘要： As set forth herein, computer-implemented methods and systems facilitate watermarking documents and/or images using 2nd generation stochastic halftoning. The watermark is used to spatially vary the gray level at which a frequency modulation-to-amplitude modulation transition occurs. The encoding algorithm uses as inputs a contone image and a watermark. The visibility of the watermark is controlled by the magnitude of the difference between the AM-to-FM transition threshold values.
摘要翻译： 如本文所述，计算机实现的方法和系统便于使用第二代随机半色调来水印文档和/或图像。 水印用于在空间上改变发生频率调制到幅度调制转换的灰度级。 编码算法使用连字图像和水印作为输入。 水印的可视性由AM到FM转换阈值之间的差值的大小控制。
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公开(公告)号：US08467099B2
公开(公告)日：2013-06-18
申请号：US13108235
申请日：2011-05-16
申请人： Shen-ge Wang , Edgar A. Bernal , Robert P. Loce , Zhigang Fan
发明人： Shen-ge Wang , Edgar A. Bernal , Robert P. Loce , Zhigang Fan
IPC分类号： H04N1/405
CPC分类号： H04N1/4051 , H04N1/4092
摘要： As set forth herein, computer-implemented methods and systems facilitate halftoning by adapting 2nd generation halftone techniques to the spatial frequency content of an image utilizing a spot function introduced in conjunction with a technique for determining seed locations, which results in halftone images exhibiting improved edge and detail rendition. A dominant orientation of pixels in an input image is employed to select a pre-generated stochastic screen used to determine the seed locations.
摘要翻译： 如本文所述，计算机实现的方法和系统通过使用结合用于确定种子位置的技术引入的斑点函数使第二代半色调技术适应于图像的空间频率内容来促进半色调，这导致半色调图像表现出改善的边缘 和细节再现。 采用输入图像中的像素的主要取向来选择用于确定种子位置的预先生成的随机屏幕。
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