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11. 发明授权

US07386166B2 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：US07386166B2
公开(公告)日：2008-06-10
申请号：US10776608
申请日：2004-02-12
申请人： Donald J. Curry , Asghar Nafarieh , Doron Kletter , Todd W Thayer
发明人： Donald J. Curry , Asghar Nafarieh , Doron Kletter , Todd W Thayer
IPC分类号： G06K9/00
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。

12. 发明授权

US07366357B2 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：US07366357B2
公开(公告)日：2008-04-29
申请号：US10776603
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： G06K9/36 , G06K9/34 , G06K9/46 , G06K9/00
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。

13. 发明授权

US07343046B2 Systems and methods for organizing image data into regions 有权
标题翻译：将图像数据组织到区域的系统和方法
公开(公告)号：US07343046B2
公开(公告)日：2008-03-11
申请号：US10776602
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 , G06K9/62 , G06K9/46 , G06K9/54
CPC分类号： H04N1/56 , G06K9/00456 , G06T7/11 , G06T7/90 , G06T2207/10008 , G06T2207/10024 , G06T2207/20016 , G06T2207/20021 , G06T2207/30176
摘要： The image data is initially processed in a manner that is similar to that used to convert the image data into 3-layer mixed raster content format. After the image data is initially processed through a first stage of the three-layer segmentation process, rather than completing the segmentation into foreground and background planes, the image data is analyzed to identify regions having similar image characteristics. These regions are grouped together in cluster if they share color characteristics and are spatially close. The clusters are then sorted according to their size, and placed into a binary foreground plane based on one or more color characteristics. Each cluster gathered into a binary foreground plane having the same color as the color of the cluster.
摘要翻译：图像数据最初以与用于将图像数据转换为3层混合光栅内容格式的方式类似的方式进行处理。在通过三层分割处理的第一阶段最初处理图像数据之后，不是将分割完成到前景和背景平面，而是分析图像数据以识别具有相似图像特征的区域。如果它们共享颜色特征并且在空间上接近，则这些区域被分组在一起。然后根据它们的大小对簇进行排序，并且基于一个或多个颜色特征将簇放入二进制前景平面。每个群聚集成具有与群集颜色相同颜色的二进制前景平面。

14. 发明授权

US07031518B2 Segmentation method and system for Multiple Raster Content (MRC) representation of documents 失效
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：US07031518B2
公开(公告)日：2006-04-18
申请号：US10188249
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
CPC分类号： G06K9/38 , G06K9/00456 , G06K2209/01 , 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. 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。

15. 发明授权

US07308136B2 Weak edge repositioning in a MRC segmentor 有权
标题翻译：弱边缘重新定位在MRC分段
公开(公告)号：US07308136B2
公开(公告)日：2007-12-11
申请号：US10612250
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 , G06K9/34 , G06K1/00 , G06K15/00 , G06F15/00
CPC分类号： G06K9/38 , G06K2209/01 , G06T7/12 , G06T2207/10008 , G06T2207/20192 , G06T2207/30176 , H04N1/642 , H04N19/27 , H04N19/29 , H04N19/60 , H04N19/86
摘要： A method for improving mixed raster compression segmentation utilizes a second stage of a process to generate the MRC Selector plane by operating on a multibit selector (GraySel) signal which is produced by a first stage process. The first stage methods used to generated the GraySel can be PDL or scan oriented. The binary Selector signal produced by the second stage minimizes the compression noise evident in the reconstructed image. This second stage processing relies on knowing the size of the JPEG minimum coded unit (MCU) which will be used to compress the segmented Foreground and Background planes. The idea is to move false (soft) edges away from the real (hard) edges by as large a distance as possible up to the point where they fall off the boundary of the MCU block. Thus a soft edge which occurs between two hard edges is either eliminated or repositioned to the midpoint and a soft edge between a hard edge and the MCU boundary is moved to the boundary. Since JPEG MCU blocks are compressed independently, transitions at the boundary cause no ‘ringing’ in the decompressed output.
摘要翻译：一种用于改进混合光栅压缩分段的方法利用一个过程的第二阶段通过对由第一阶段过程产生的多位选择器（GraySel）信号进行操作而产生MRC选择器平面。用于生成GraySel的第一阶段方法可以是PDL或扫描。由第二级产生的二进制选择器信号将重建图像中显而易见的压缩噪声最小化。该第二阶段处理依赖于知道将用于压缩分段的前景和背景平面的JPEG最小编码单元（MCU）的大小。这个想法是将假（软）边缘从真实（硬）边缘移开尽可能大的距离，直到它们从MCU块的边界掉下来。因此，发生在两个硬边缘之间的软边缘被消除或重新定位到中点，并且硬边缘和MCU边界之间的软边缘移动到边界。由于JPEG MCU块被独立压缩，所以在边界处的转换在解压缩输出中不会发生“振铃”。

16. 发明授权

US07302116B2 Method and apparatus for reduced size image 有权
标题翻译：缩小尺寸图像的方法和装置
公开(公告)号：US07302116B2
公开(公告)日：2007-11-27
申请号：US10776620
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： G06K9/32
CPC分类号： G06T3/4023
摘要： Reduced size images may be generated by separating dimensions that span the original image into a plurality of groups so that data in each group of one or more dimensions may be processed differently from data of other groups. For example, for two-dimensional images, pixels of selected lines may be completely discarded or skipped while pixels of remaining lines may be processed along the x-dimension to obtain data of the reduced size image. The main advantages include very fast and efficient implementation, minimal storage requirements, and good image quality.
摘要翻译：可以通过将跨越原始图像的维度分离成多个组来生成缩小尺寸的图像，使得可以以与其他组的数据不同的方式处理一个或多个维度的每个组中的数据。例如，对于二维图像，可以完全丢弃或跳过所选行的像素，同时可以沿x维度处理剩余行的像素以获得缩小尺寸图像的数据。主要优点包括非常快速高效的实现，最小的存储要求和良好的图像质量。

17. 发明授权

US07233695B2 Scan color conversion method 有权
标题翻译：扫描颜色转换方法
公开(公告)号：US07233695B2
公开(公告)日：2007-06-19
申请号：US10612261
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 , G09G5/00 , H04N1/46
CPC分类号： H04N1/6019 , H04N1/41 , H04N1/646
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。

18. 发明授权

US06983076B2 Control system for digital de-screening of documents 失效
标题翻译：数字解除档案的控制系统
公开(公告)号：US06983076B2
公开(公告)日：2006-01-03
申请号：US10188026
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： G06K9/40 , H04N1/405
CPC分类号： G06T5/004 , G06T5/20 , H04N1/40075
摘要： A method and a system for controlling de-screening of documents. The control system is included in a de-screening system including a bank of filters. The filter bank receives an image signal and produces a set of filter output signals. The control system comprises a contrast module, a halftone estimate module and a pixel control module. The contrast module receives a filter output signal from a filter having a large filter span and produces a contrast signal. The halftone estimate module receives the image signal and a filter output signal from a filter having a small filter span and produces an estimated frequency signal and a halftone weight signal. Based on the contrast signal, the estimated frequency signal and the halftone weight signal, the pixel control module produces a control signal which includes information regarding which of the filter output signals are to be blended and the proportion of blending.
摘要翻译：一种用于控制文件的筛选的方法和系统。控制系统包括在一个包括一组过滤器的去筛选系统中。滤波器组接收图像信号并产生一组滤波器输出信号。控制系统包括对比度模块，半色调估计模块和像素控制模块。对比度模块从具有较大滤波器跨度的滤波器接收滤波器输出信号并产生对比度信号。半色调估计模块从具有小滤波器跨度的滤波器接收图像信号和滤波器输出信号，并产生估计的频率信号和半色调加权信号。基于对比度信号，估计的频率信号和半色调加权信号，像素控制模块产生一个控制信号，该控制信号包括关于要混合哪个滤波器输出信号的信息和混合比例。

19. 发明授权

US06859204B2 Dynamic threshold system for multiple raster content (MRC) representation of documents 失效
标题翻译：用于多个光栅内容（MRC）表示文档的动态阈值系统
公开(公告)号：US06859204B2
公开(公告)日：2005-02-22
申请号：US10188277
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： G06K9/20 , G06K9/38 , G06T5/00
CPC分类号： G06K9/38 , G06K9/00456 , G06K2209/01 , G06T7/11 , G06T7/194 , G06T2207/10008 , G06T2207/20012 , G06T2207/30176
摘要： A method and a system for dynamically thresholding an image signal. The system comprises a computing block. The computing block receives the image signal and a minimum and a maximum within each of a set of windows centered on the current pixel in the image signal, and computes, for each of the windows, based on the current pixel and the respective minimum and maximum, 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 indicators.
摘要翻译：一种用于动态阈值化图像信号的方法和系统。该系统包括计算块。计算块在图像信号中以当前像素为中心的一组窗口的每一个的每一个中接收图像信号，并且接收最小和最大值，并且基于当前像素和相应的最小和最大值来计算每个窗口，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，并且基于指示符输出控制信号。

20. 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。

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