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1. 发明授权

US07634150B2 Removing ringing and blocking artifacts from JPEG compressed document images 失效
公开(公告)号：US07634150B2
公开(公告)日：2009-12-15
申请号：US12463768
申请日：2009-05-11
申请人： Basak Oztan , Zhigang Fan , Reiner Eschbach , Amal Z. Malik
发明人： Basak Oztan , Zhigang Fan , Reiner Eschbach , Amal Z. Malik
IPC分类号： G06K9/40
CPC分类号： H04N19/86
摘要： A method of removing ringing and blocking artifacts from a decompressed digital image. In one method, a background value of the digital image a background region and foreground regions is determined, and a threshold value is computed. A mapping of the digital image is then generated by thresholding the digital image based on the threshold value to produce a thresholded image, and enlarging the foreground regions of the thresholded image to form a map image. The mapping includes the background pixels of the map image. The background region of the decompressed digital image is then cleansed based on the mapping. In an alternate method, ringing artifacts are removed from a decompressed digital image based on a signal-to-noise ratio of the image. In yet another alternate embodiment, ringing artifacts are from a decompressed digital color image that includes a chrominance channel and a luminance channel. An alternate embodiment removes ringing and blocking artifacts.

2. 发明授权

US07532767B2 Removing ringing and blocking artifacts from JPEG compressed document images 失效
标题翻译：从JPEG压缩文档图像中删除振铃和块状伪影
公开(公告)号：US07532767B2
公开(公告)日：2009-05-12
申请号：US11443830
申请日：2006-05-31
申请人： Basak Oztan , Zhigang Fan , Reiner Eschbach , Amal Z. Malik
发明人： Basak Oztan , Zhigang Fan , Reiner Eschbach , Amal Z. Malik
IPC分类号： G06K9/40
CPC分类号： H04N19/86
摘要： A method of removing ringing and blocking artifacts from a decompressed digital image. In one method, a background value of the digital image a background region and foreground regions is determined, and a threshold value is computed. A mapping of the digital image is then generated by thresholding the digital image based on the threshold value to produce a thresholded image, and enlarging the foreground regions of the thresholded image to form a map image. The mapping includes the background pixels of the map image. The background region of the decompressed digital image is then cleansed based on the mapping. In an alternate method, ringing artifacts are removed from a decompressed digital image based on a signal-to-noise ratio of the image. In yet another alternate embodiment, ringing artifacts are from a decompressed digital color image that includes a chrominance channel and a luminance channel. An alternate embodiment removes ringing and blocking artifacts.
摘要翻译：从解压缩的数字图像中去除振铃和阻塞伪影的方法。在一种方法中，确定数字图像的背景区域和前景区域的背景值，并且计算阈值。然后通过基于阈值阈值化数字图像来产生数字图像的映射，以产生阈值图像，并且放大阈值图像的前景区域以形成地图图像。该映射包括地图图像的背景像素。然后基于映射清理解压缩的数字图像的背景区域。在替代方法中，基于图像的信噪比，从解压缩的数字图像中去除振铃伪像。在又一替代实施例中，振铃伪影来自包括色度通道和亮度通道的解压缩数字彩色图像。替代实施例消除振铃和阻塞伪影。

3. 发明申请

US20090214113A1 Removing Ringing and Blocking Artifacts from JPEG Compressed Document Images 失效
标题翻译：从JPEG压缩文档图像中删除振铃和阻塞人工制品
公开(公告)号：US20090214113A1
公开(公告)日：2009-08-27
申请号：US12463768
申请日：2009-05-11
申请人： Basak Oztan , Zhigang Fan , Reiner Eschbach , Amal Z. Malik
发明人： Basak Oztan , Zhigang Fan , Reiner Eschbach , Amal Z. Malik
IPC分类号： G06K9/00 , G06K9/40 , G06K9/36
CPC分类号： H04N19/86
摘要： A method of removing ringing and blocking artifacts from a decompressed digital image. In one method, a background value of the digital image a background region and foreground regions is determined, and a threshold value is computed. A mapping of the digital image is then generated by thresholding the digital image based on the threshold value to produce a thresholded image, and enlarging the foreground regions of the thresholded image to form a map image. The mapping includes the background pixels of the map image. The background region of the decompressed digital image is then cleansed based on the mapping. In an alternate method, ringing artifacts are removed from a decompressed digital image based on a signal-to-noise ratio of the image. In yet another alternate embodiment, ringing artifacts are from a decompressed digital color image that includes a chrominance channel and a luminance channel. An alternate embodiment removes ringing and blocking artifacts.
摘要翻译：从解压缩的数字图像中去除振铃和阻塞伪影的方法。在一种方法中，确定数字图像的背景区域和前景区域的背景值，并且计算阈值。然后通过基于阈值阈值化数字图像来产生数字图像的映射，以产生阈值图像，并且放大阈值图像的前景区域以形成地图图像。该映射包括地图图像的背景像素。然后基于映射清理解压缩的数字图像的背景区域。在替代方法中，基于图像的信噪比，从解压缩的数字图像中去除振铃伪像。在又一替代实施例中，振铃伪影来自包括色度通道和亮度通道的解压缩数字彩色图像。替代实施例消除振铃和阻塞伪影。

4. 发明申请

US20070280551A1 Removing ringing and blocking artifacts from JPEG compressed document images 失效
标题翻译：从JPEG压缩文档图像中删除振铃和块状伪影
公开(公告)号：US20070280551A1
公开(公告)日：2007-12-06
申请号：US11443830
申请日：2006-05-31
申请人： Basak Oztan , Zhigang Fan , Reiner Eschbach , Amal Z. Malik
发明人： Basak Oztan , Zhigang Fan , Reiner Eschbach , Amal Z. Malik
IPC分类号： G06K9/40 , G06K9/44
CPC分类号： H04N19/86
摘要： A method of removing ringing and blocking artifacts from a decompressed digital image. In one method, a background value of the digital image a background region and foreground regions is determined, and a threshold value is computed. A mapping of the digital image is then generated by thresholding the digital image based on the threshold value to produce a thresholded image, and enlarging the foreground regions of the thresholded image to form a map image. The mapping includes the background pixels of the map image. The background region of the decompressed digital image is then cleansed based on the mapping. In an alternate method, ringing artifacts are removed from a decompressed digital image based on a signal-to-noise ratio of the image. In yet another alternate embodiment, ringing artifacts are from a decompressed digital color image that includes a chrominance channel and a luminance channel. An alternate embodiment removes ringing and blocking artifacts.
摘要翻译：从解压缩的数字图像中去除振铃和阻塞伪影的方法。在一种方法中，确定数字图像的背景区域和前景区域的背景值，并且计算阈值。然后通过基于阈值阈值化数字图像来产生数字图像的映射，以产生阈值图像，并且放大阈值图像的前景区域以形成地图图像。该映射包括地图图像的背景像素。然后基于映射清理解压缩的数字图像的背景区域。在替代方法中，基于图像的信噪比，从解压缩的数字图像中去除振铃伪像。在又一替代实施例中，振铃伪影来自包括色度通道和亮度通道的解压缩数字彩色图像。替代实施例消除振铃和阻塞伪影。

5. 发明授权

US08681387B2 Guilloche mark generation 有权
标题翻译： Guilloche标记代
公开(公告)号：US08681387B2
公开(公告)日：2014-03-25
申请号：US12958819
申请日：2010-12-02
申请人： Martin S. Maltz , Zhigang Fan , Reiner Eschbach , Judith Stinehour
发明人： Martin S. Maltz , Zhigang Fan , Reiner Eschbach , Judith Stinehour
IPC分类号： H04N1/32
CPC分类号： H04N1/0044 , H04N1/00883
摘要： A method and system for creating guilloché base pattern with two-dimensional periodicity in a plurality of replicate patterns is shown wherein the creating can be assessed in real-time for pattern acceptability by a user. A base pattern is set on an imaging device in vector space relative to a set of predetermined pattern nodes. The base pattern is modulated via a user interface by adjusting positions of the pattern known for selectively controlling curve shapes of the pattern. A guilloché mark is illustrated by display on the imaging device of the adjusted base pattern and a compilation of associated replicate patterns for user assessment of the mark.
摘要翻译：示出了用于在多个重复图案中创建具有二维周期性的illo形基底图案的方法和系统，其中可以实时地评估创建以便用户的图案可接受性。在相对于一组预定图案节点的向量空间中的成像装置上设置基本图案。通过调整已知的用于选择性地控制图案的曲线形状的图案的位置，经由用户界面调制基本图案。通过在成像装置上显示调整后的基本图案和用于用户评估标记的相关联的重复图案的汇编来说明illo迹标记。

6. 发明申请

US20140022603A1 VARIABLE DATA IMAGE WATERMARKING USING INFRARED SEQUENCE STRUCTURES IN BLACK SEPARATION 有权
标题翻译：在黑色分离中使用红外序列结构的可变数据图像水印
公开(公告)号：US20140022603A1
公开(公告)日：2014-01-23
申请号：US13553338
申请日：2012-07-19
申请人： Reiner Eschbach , Zhigang Fan , Martin E. Hoover
发明人： Reiner Eschbach , Zhigang Fan , Martin E. Hoover
IPC分类号： G06K15/02
CPC分类号： G06T1/0028 , G06T2201/0051 , H04N1/32261 , H04N1/32309 , H04N1/32331 , H04N1/32352 , H04N2201/327
摘要： An image watermarking method includes a color transform on RGB image data to derive CMYK image data that define a constant K image. Variable infrared (IR) mark data defining an IR mark are received and a sparse two-dimensional pattern of black pixels is defined that corresponds to the variable IR data, e.g., using Gold codes or pseudorandom binary sequences. A watermarked black separation K″ is defined by embedding the sparse two-dimensional pattern into the constant K black separation K′ while maintaining local average levels. A watermarked image includes the watermarked black separation K″ in combination with the CMY separations of the constant K image. A decoding process includes using an IR microscope fitted with IR LEDs and an IR pass filter to capture an IR image, which is subjected to exposure correction, thresholding, and dilation operations to extract the two-dimensional pattern for subsequent correlation processing.
摘要翻译：图像水印方法包括对RGB图像数据进行颜色变换以导出定义常数K图像的CMYK图像数据。接收定义IR标记的可变红外（IR）标记数据，并且例如使用Gold码或伪随机二进制序列来定义对应于可变IR数据的稀疏二维图案的黑色像素。通过将稀疏二维图案嵌入到常数K黑色分离K'中同时保持局部平均水平来定义水印黑色分离K“。水印图像包括与常数K图像的CMY分离相结合的水印黑色分离K“。解码过程包括使用装有IR LED的IR显微镜和IR通过滤光片来捕获经过曝光校正，阈值和扩张操作的IR图像，以提取二维图案用于随后的相关处理。

7. 发明授权

US08619074B2 Rendering personalized text on curved image surfaces 有权
标题翻译：在曲面图像表面上呈现个性化文字
公开(公告)号：US08619074B2
公开(公告)日：2013-12-31
申请号：US12964820
申请日：2010-12-10
申请人： Raja Bala , Zhigang Fan , Reiner Eschbach , Hengzhou Ding , Jan P. Allebach , Charles A. Bouman
发明人： Raja Bala , Zhigang Fan , Reiner Eschbach , Hengzhou Ding , Jan P. Allebach , Charles A. Bouman
IPC分类号： G06T15/00
CPC分类号： G06T11/60 , G06T15/04 , G06T19/00
摘要： As set forth herein, a computer-implemented method facilitates replacing text on cylindrical or curved surfaces in images. For instance, the user is first asked to perform a multi-click selection of a polygon to bound the text. A triangulation scheme is carried out to identify the pixels. Segmentation and erasing algorithms are then applied. The ellipses are estimated accurately through constrained least squares fitting. A 3D framework for rendering the text, including the central projection pinhole camera model and specification of the cylindrical object, is generated. These parameters are jointly estimated from the fitted ellipses as well as the two vertical edges of the cylinder. The personalized text is wrapped around the cylinder and subsequently rendered.
摘要翻译：如本文所述，计算机实现的方法有助于在图像中的圆柱形或弯曲表面上替换文本。例如，首先要求用户执行多边形的多点选择以绑定文本。进行三角测量方案来识别像素。然后应用分割和擦除算法。通过约束最小二乘拟合精确估计椭圆。生成用于呈现文本的3D框架，包括中心投影针孔相机模型和圆柱形对象的规格。这些参数是从安装的椭圆以及气缸的两个垂直边缘共同估计的。个性化文字包裹在圆柱体上并随后呈现。

8. 发明授权

US08139270B2 Variable data periodic line patterns for composing a font system 有权
标题翻译：用于组合字体系统的可变数据周期线图案
公开(公告)号：US08139270B2
公开(公告)日：2012-03-20
申请号：US11756375
申请日：2007-05-31
申请人： Zhigang Fan , Reiner Eschbach , Judith E. Stinehour
发明人： Zhigang Fan , Reiner Eschbach , Judith E. Stinehour
IPC分类号： H04N1/405
CPC分类号： B42D25/29
摘要： A method and system is provided for generating a variable data differential line pattern font comprising forming a periodic line pattern suitable for tessellation disposition within a printed document and selectively distorting a portion of the periodic line pattern in a predetermined manner wherein the distorting comprises generating a distinguishable font corresponding to the distorting. A plurality of different distinguishable fonts are formed by a corresponding plurality of distorted line patterns, respectively.
摘要翻译：提供了一种用于产生可变数据差分线图案字体的方法和系统，包括形成适合于打印文档内的镶嵌布置的周期性线图案，并且以预定方式选择性地扭曲周期线图案的一部分，其中，所述失真包括生成可区分的字体对应于扭曲。多个不同的可区分字体分别由对应的多个失真线图案形成。

9. 发明申请

US20110141530A1 Embedding information using modulated periodic line patterns 有权
标题翻译：使用调制的周期线图案嵌入信息
公开(公告)号：US20110141530A1
公开(公告)日：2011-06-16
申请号：US12637041
申请日：2009-12-14
申请人： Zhigang Fan , Reiner Eschbach , Judith Stinehour
发明人： Zhigang Fan , Reiner Eschbach , Judith Stinehour
IPC分类号： G06K15/02
CPC分类号： H04N1/32219 , G06T1/0021 , H04N1/32144 , H04N1/32261 , H04N2201/3226 , H04N2201/3271
摘要： A method and system is provided providing a variable data guilloché pattern comprised of variable data differential line pattern fonts comprising decodable template symbols which are capable of being selectively assembled into a predetermined variable data code. The differential line pattern fonts are further spatially modulated for imposition of a second data channel on a printed document. The representation can be decoded with a digital scanner capable of identifying the embedded patterns and spatially modulated transform function and communicate it to a user for verifying a document containing the code.
摘要翻译：提供了一种方法和系统，其提供包括可变数据差分线图案字体的可变数据纹迹图案，其包括可选择性地组装成预定可变数据代码的可解码模板符号。差分线图案字体被进一步空间调制以在打印文档上施加第二数据通道。该表示可以用能够识别嵌入图案和空间调制变换功能的数字扫描仪进行解码，并将其传送给用户以验证包含代码的文档。

10. 发明授权

US07787154B2 Font printing system having embedded security information comprising variable data periodic line patterns 有权
标题翻译：具有包括可变数据周期线图案的嵌入式安全信息的字体打印系统
公开(公告)号：US07787154B2
公开(公告)日：2010-08-31
申请号：US11756390
申请日：2007-05-31
申请人： Zhigang Fan , Reiner Eschbach , Judith E. Stinehour
发明人： Zhigang Fan , Reiner Eschbach , Judith E. Stinehour
IPC分类号： H04N1/405
CPC分类号： B42D25/337 , B41M3/14 , B42D2035/16 , G07D7/0053
摘要： A method and system is provided for providing a variable data guilloché shaped pattern comprised of variable data differential line pattern fonts comprising decodable template symbols which are capable of being selectively assembled into a predetermined variable data code. The code representations are embedded in the guilloché pattern amongst a plurality of unvaried standard base patterns. The representation can be decoded with a digital scan capable of identifying the embedded patterns and communicated it to a user for verifying a document containing the code.
摘要翻译：提供了一种方法和系统，用于提供包括可变数据差分线图案字体的可变数据纹波形图案，其包括可选择性地组装成预定可变数据代码的可解码模板符号。代码表示被嵌入在多个不变的标准基本模式之间的guilloché模式中。该表示可以用能够识别嵌入图案的数字扫描进行解码，并将其传达给用户以验证包含代码的文档。

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