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21. 发明授权

US07433084B2 Digital de-screening technique for scanned documents 有权
标题翻译：扫描文件的数字去筛选技术
公开(公告)号：US07433084B2
公开(公告)日：2008-10-07
申请号：US10612064
申请日：2003-07-01
申请人： Donald J. Curry , Doron Kletter , Asghar Nafarieh
发明人： Donald J. Curry , Doron Kletter , Asghar Nafarieh
IPC分类号： G06T5/00 , H04N1/409
CPC分类号： H04N1/40075 , G06T5/004 , H04N1/4092
摘要： A method and system for de-screening an image signal utilizing a bank of filters to provide several increasingly blurred versions of the original image signal is disclosed. At any given time, only two of these blurred versions are created, on a pixel-by-pixel basis. The outputs from the selected pair of blurred signals are then blended together to create a variable blending output that can vary smoothly from no blurring to maximum blurring in a smooth and continuous manner. In addition, the method provides the capability to enhance text and line art by using a variable un-sharp masking mechanism with independent post-blur sharpening control, and the capability to detect and enhance neutral (no-color) output pixels.
摘要翻译：公开了一种利用一组滤波器对图像信号进行去屏蔽以提供原始图像信号的几个日益模糊的版本的方法和系统。在任何给定的时间，只有两个这些模糊的版本是逐个像素地创建的。然后将所选择的一对模糊信号的输出混合在一起以产生可以平滑且连续的方式从无模糊到最大模糊的平滑变化的可变混合输出。此外，该方法提供了通过使用具有独立的模糊后锐化控制的可变非锐度掩蔽机制以及检测和增强中性（无彩色）输出像素的能力来增强文本和线条艺术的能力。

22. 发明授权

US07382489B2 Efficient interpolation technique using programmable node spacing 有权
标题翻译：使用可编程节点间隔的高效插值技术
公开(公告)号：US07382489B2
公开(公告)日：2008-06-03
申请号：US10612062
申请日：2003-07-01
申请人： Donald J. Curry , Doron Kletter , Asghar Nafarieh
发明人： Donald J. Curry , Doron Kletter , Asghar Nafarieh
IPC分类号： G06F15/00 , H04N1/46 , G06K9/00
CPC分类号： G06T9/00 , G06T3/4007 , G06T3/4023 , H04N1/41 , H04N1/46
摘要： A method and a system for computing the function value of an input node based on function values of known nodes. A database of known nodes and their corresponding function values is formed. The known nodes are located such that a distance between any two adjacent known nodes is an integer power-of-two number. The database is searched for a first node such that the input node is located between the first node and an adjacent second node. The difference δ between the input node and the first node is computed. Then δ is shifted to the right by k positions, k being the logarithm in base 2 of the distance between the first and second nodes. The input node function value is computed by combining the first node function value with the product of the shifted δ and the difference between the function values of the second and first nodes. When used in MRC context, the above method and system is applied to each of the color MRC planes individually, instead of the merged output. The resulting performance is approved since most if not all of the color MRC planes are sub-sampled.
摘要翻译：一种基于已知节点的功能值计算输入节点的功能值的方法和系统。形成已知节点的数据库及其对应的功能值。已知节点被定位成使得任何两个相邻的已知节点之间的距离是二进制数的整数。搜索数据库以获得第一节点，使得输入节点位于第一节点和相邻的第二节点之间。计算输入节点和第一个节点之间的差异增量。然后，δ向右移动k个位置，k是第一和第二个节点之间的距离的基数2中的对数。输入节点功能值是通过将第一个节点功能值与移位的增量的乘积和第二个和第一个节点的功能值的差值相结合来计算的。当在MRC上下文中使用时，将上述方法和系统单独地应用于每个彩色MRC平面，而不是合并的输出。所得到的性能被批准，因为大多数（如果不是全部）彩色MRC平面都被子采样。

23. 发明授权

US07379587B2 Systems and methods for identifying regions within an image having similar continuity values 有权
标题翻译：用于识别具有相似连续性值的图像内的区域的系统和方法
公开(公告)号：US07379587B2
公开(公告)日：2008-05-27
申请号：US10776515
申请日：2004-02-12
申请人： Donald J. Curry , Asghar Nafarieh , Doron Kletter
发明人： Donald J. Curry , Asghar Nafarieh , Doron Kletter
IPC分类号： G06K9/00 , G06K9/34 , G06K9/36
CPC分类号： G06K9/4638 , G06T7/12 , G06T7/194 , G06T2207/10008 , G06T2207/20192 , G06T2207/30176
摘要： A blob identifier uses edge continuity signal to analyze how to combine the current pixel into an existing blob or into the background image, or start a new blob. The blob identifier outputs a list of blob identifiers on a line-by-line basis.
摘要翻译：斑点标识符使用边缘连续性信号来分析如何将当前像素组合到现有的斑点或背景图像中，或者开始新的斑点。 blob标识符逐行输出一个blob标识符列表。

24. 发明授权

US07375856B2 Halftone screen frequency and magnitude estimation for digital descreening of documents 有权
标题翻译：半色调屏幕频率和幅度估计用于文件的数字去网
公开(公告)号：US07375856B2
公开(公告)日：2008-05-20
申请号：US10612084
申请日：2003-07-01
申请人： Donald J. Curry , Doron Kletter , Asghar Nafarieh
发明人： Donald J. Curry , Doron Kletter , Asghar Nafarieh
IPC分类号： G06T5/00 , H04N1/409
CPC分类号： G06T5/20 , H04N1/40075
摘要： An efficient method and system for eliminating halftone screens from scanned documents while preserving the quality and sharpness of text and line-art is disclosed. The method and system utilizes one or more independent channels with different sensitivities (e.g., Max, High, and Low) to provide high quality frequency and magnitude estimation. The most sensitive channel (Max) derives the frequency estimate, and the remaining channels (e.g., High and Low) are combined to create the screen magnitude. The Max channel is the most sensitive and will usually report the existence of frequencies even when the screen is very weak. Therefore, the screen frequency must be additionally qualified by the screen magnitude. The screen magnitude can be interpreted as the level of confidence that the local neighborhood represents half-toned data.
摘要翻译：公开了一种有效的方法和系统，用于消除扫描文档中的半色调屏幕，同时保持文本和线条的质量和清晰度。该方法和系统利用具有不同灵敏度（例如，Max，High和Low）的一个或多个独立信道来提供高质量的频率和幅度估计。最敏感的信道（Max）导出频率估计，并且组合剩余信道（例如，高和低）以产生屏幕幅度。最大通道是最敏感的，即使屏幕非常弱，通常也会报告频率的存在。因此，屏幕频率必须由屏幕大小额外限定。屏幕大小可以解释为局部邻域表示半色调数据的置信度。

25. 发明授权

US07242802B2 Segmentation method and system for Multiple Raster Content (MRC) representation of documents 有权
标题翻译：文档的多光栅内容（MRC）表示的分段方法和系统
公开(公告)号：US07242802B2
公开(公告)日：2007-07-10
申请号：US10612246
申请日：2003-07-01
申请人： Donald J. Curry , Doron Kletter , Asghar Nafarieh
发明人： Donald J. Curry , Doron Kletter , Asghar Nafarieh
IPC分类号： G06K9/34 , G06K9/36
CPC分类号： G06K9/38 , G06K9/00456 , G06K2209/01 , H04N1/40062 , H04N1/403
摘要： A method and a system for separating an image signal into a set of image planes. The system comprises a min-max module, a dynamic threshold module and a separation module. The min-max module receives the image signal, searches for a minimum and maximum within at least one window centered on a current pixel in the image signal. The dynamic threshold module computes, for the window, based on the respective minimum and maximum received from the min-max module and the current pixel, a respective indicator representing the distance and direction of the current pixel relative to a respective threshold plane, and outputs a control signal based on the indicator. The separation module separates the image signal into the set of image planes in accordance with the control signal by including a representation of the current pixel in at least one of the image planes.
摘要翻译：一种用于将图像信号分离成一组图像平面的方法和系统。该系统包括最小 - 最大模块，动态阈值模块和分离模块。最小 - 最大模块接收图像信号，在以图像信号中的当前像素为中心的至少一个窗口内搜索最小和最大值。动态阈值模块基于从最小 - 最大模块和当前像素接收的相应最小值和最大值来计算窗口，表示当前像素相对于相应阈值平面的距离和方向的相应指示符，并且输出基于指示器的控制信号。分离模块通过在至少一个图像平面中包括当前像素的表示，根据控制信号将图像信号分离成图像平面。

26. 发明授权

US07200263B2 Background suppression and color adjustment method 有权
标题翻译：背景抑制和颜色调整方法
公开(公告)号：US07200263B2
公开(公告)日：2007-04-03
申请号：US10612461
申请日：2003-07-01
申请人： Donald J. Curry , Doron Kletter , Asghar Nafarieh
发明人： Donald J. Curry , Doron Kletter , Asghar Nafarieh
IPC分类号： G06K9/00
CPC分类号： G06T5/40 , G06T5/007 , H04N1/407 , H04N1/4074
摘要： A Gamut Enhance Module (GME) is disclosed for applying 3 independent Tone Reproduction Curves (TRC) to each of the color components of an input image. The implementation is done via three independent and fully programmable 1D lookup tables. The input to the Gamut Enhance Module is the output DSS from a Scaling Module (SCL), representing a scaled and de-screened version of the source image. The output is a gamut-mapped signal GME. The GME unit includes special logic to neutralize (set to gray) or preserve input colors.
摘要翻译：公开了一种色域增强模块（GME），用于将3个独立的色调再现曲线（TRC）应用于输入图像的每个颜色分量。该实现通过三个独立且完全可编程的1D查找表完成。色域增强模块的输入是来自缩放模块（SCL）的输出DSS，表示源图像的缩放和去屏蔽版本。输出是色域映射信号GME。 GME单元包括中和（设置为灰色）或保留输入颜色的特殊逻辑。

27. 发明授权

US06987882B2 Separation system for Multiple Raster Content (MRC) representation of documents 失效
标题翻译：多光栅内容分离系统（MRC）表示文件
公开(公告)号：US06987882B2
公开(公告)日：2006-01-17
申请号：US10188157
申请日：2002-07-01
申请人： Donald J. Curry , Doron Kletter , Asghar Nafarieh
发明人： Donald J. Curry , Doron Kletter , Asghar Nafarieh
IPC分类号： G06K9/34 , G06K9/40
CPC分类号： G06K9/00456 , G06T7/11 , G06T7/194 , G06T2207/10008 , G06T2207/20012 , G06T2207/30176
摘要： A method and a system for separating an image signal into a set of image planes in accordance with a control signal. The system comprises a selector module, an edge processing module and a foreground/background separation module. The selector module receives the control signal and produces a selector signal. The edge processing module receives the selector signal and produces a decision signal. The foreground/background separation module receives the image signal and the decision signal, and outputs a foreground signal and a background signal, a representation of the current pixel of the image signal being included in at least one of the foreground signal and the background signal in accordance with the decision signal.
摘要翻译：根据控制信号将图像信号分离为一组图像平面的方法和系统。该系统包括选择器模块，边缘处理模块和前景/背景分离模块。选择器模块接收控制信号并产生选择信号。边缘处理模块接收选择器信号并产生判定信号。前景/背景分离模块接收图像信号和判定信号，并输出前景信号和背景信号，将图像信号的当前像素的表示包含在前景信号和背景信号中的至少一个中按照决策信号。

28. 发明申请

US20050180628A1 Systems and methods for identifying regions within an image having similar continuity values 有权
标题翻译：用于识别具有相似连续性值的图像内的区域的系统和方法
公开(公告)号：US20050180628A1
公开(公告)日：2005-08-18
申请号：US10776515
申请日：2004-02-12
申请人： Donald Curry , Asghar Nafarieh , Doron Kletter
发明人： Donald Curry , Asghar Nafarieh , Doron Kletter
IPC分类号： G06T7/40 , G06K9/00 , G06K9/34 , G06K9/36 , G06K9/46 , G06T5/00
CPC分类号： G06K9/4638 , G06T7/12 , G06T7/194 , G06T2207/10008 , G06T2207/20192 , G06T2207/30176
摘要： A blob identifier uses edge continuity signal to analyze to how to combine the current pixel into an existing or into the background image, or start a new blob. The blob identifier outputs a lists of blob identifiers on a line-by-line basis.
摘要翻译：斑点标识符使用边缘连续性信号来分析如何将当前像素组合成现有或背景图像，或者开始新的斑点。 blob标识符逐行输出一个Blob标识符列表。

29. 发明申请

US20050180649A1 Systems and methods for connecting regions image data having similar characteristics 有权
标题翻译：用于连接区域具有相似特征的图像数据的系统和方法
公开(公告)号：US20050180649A1
公开(公告)日：2005-08-18
申请号：US10776608
申请日：2004-02-12
申请人： Donald Curry , Asghar Nafarieh , Doron Kletter , Todd Thayer
发明人： Donald Curry , Asghar Nafarieh , Doron Kletter , Todd Thayer
IPC分类号： G06T7/00 , G06K9/50 , G06T5/00 , H04N1/56 , G06K9/36 , G06K9/00 , G06K9/34
CPC分类号： G06K9/50 , G06T7/11 , G06T7/194 , G06T2207/10008 , G06T2207/30176 , H04N1/56
摘要： Image data is analyzed line by line to identify pixels having similar color and edge characteristics. The pixels on one line are linked to pixels on another line, if they share similar characteristics. The linked pixels are then grouped together in regions and the average color of the region is calculated. An image map is generated that identifies the regions to which the pixels belong, along with a final table of the regions appearing in the image.
摘要翻译：逐行分析图像数据以识别具有相似颜色和边缘特征的像素。如果一条线上的像素具有相似的特征，那么一条线上的像素将链接到另一条线上的像素。然后将链接的像素组合在一起，并计算该区域的平均颜色。生成图像映射，其识别像素所属的区域，以及出现在图像中的区域的最终表格。

30. 发明申请

US20050180648A1 Systems and methods for adjusting image data to form highly compressible image planes 有权
标题翻译：用于调整图像数据以形成高度可压缩的图像平面的系统和方法
公开(公告)号：US20050180648A1
公开(公告)日：2005-08-18
申请号：US10776603
申请日：2004-02-12
申请人： Donald Curry , Asghar Nafarieh , Doron Kletter
发明人： Donald Curry , Asghar Nafarieh , Doron Kletter
IPC分类号： G06T5/00 , H04N1/40 , H04N1/41 , H04N1/64 , G06K9/36 , G06K9/34 , G06K9/46
CPC分类号： H04N1/642
摘要： The image data is processed into a background plane and a plurality of foreground planes. Holes are inserted onto the background plane, in regions which are assigned to a foreground plane. The background plane is sub-sampled, and holes remaining in the sub-sampled image are filled with the average color of the non-zero sub-sampled pixels over pre-determined blocks such as JPEG blocks. If a block is entirely made of holes, the block is filled with a constant color that is propagated from the average color of a previous block. The resulting background plane is far smoother than the original image data and thus can be effectively sub-sampled and highly compressed without adverse deterioration in reconstructed image quality.
摘要翻译：图像数据被处理成背景平面和多个前景平面。在分配给前景平面的区域中，将孔插入到背景平面上。对背景平面进行二次采样，并且通过诸如JPEG块之类的预定块的非零子采样像素的平均颜色填充剩余在子采样图像中的孔。如果一个块完全由孔组成，则该块被填充有一个恒定的颜色，该颜色从先前块的平均颜色传播。所得到的背景平面比原始图像数据更平滑，因此可以有效地进行子采样和高度压缩，而不会造成重建图像质量的恶化。

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