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    COMPRESSION OF BI-LEVEL IMAGES WITH EXPLICIT REPRESENTATION OF INK CLUSTERS
    1.
    发明申请
    COMPRESSION OF BI-LEVEL IMAGES WITH EXPLICIT REPRESENTATION OF INK CLUSTERS 有权
    压缩图像的双层图像与墨盒的突出表现

    公开(公告)号：US20070242888A1

    公开(公告)日：2007-10-18

    申请号：US11734299

    申请日：2007-04-12

    申请人： Erin Renshaw ,  Patrice Simard ,  Henrique Malvar

    发明人： Erin Renshaw ,  Patrice Simard ,  Henrique Malvar

    IPC分类号： G06K9/36

    CPC分类号： G06K9/6202 ,  G06T9/001 ,  H04N1/4115 ,  H04N19/97

    摘要： A system and method facilitating compression of bi-level images with explicit representation of ink clusters is provided. The present invention includes a cluster shape estimator that analyzes connected component information, extracts clusters and stores the cluster in a global dictionary, a page dictionary or a store of unclustered shapes. A bitmap estimation from clusters component determines dictionary positions for clusters stored in the global dictionary which are then encoded. A cluster position estimator determines page positions of clusters of the global dictionary and/or the page dictionary that are then encoded. Further, the global dictionary, the page dictionary and the store of unclustered shapes are also encoded.

    摘要翻译： 提供了一种利用墨簇的显式表示促进双层图像压缩的系统和方法。 本发明包括分析连接的分量信息的群集形状估计器，提取群集并将群集存储在全局词典，页面字典或非群集形状的存储中。 来自簇组件的位图估计确定存储在全局字典中的簇的字典位置，然后对其进行编码。 集群位置估计器确定然后被编码的全局字典和/或页字典的集群的页面位置。 此外，还编码了全局字典，页字典和未分簇形状的存储。

    Clustering
    2.
    发明申请
    Clustering 有权
    聚类

    公开(公告)号：US20050271281A1

    公开(公告)日：2005-12-08

    申请号：US11198562

    申请日：2005-08-05

    申请人： Patrice Simard ,  Henrique Malvar ,  Erin Renshaw

    发明人： Patrice Simard ,  Henrique Malvar ,  Erin Renshaw

    IPC分类号： G06T7/00 ,  G06F19/00 ,  G06K9/20 ,  G06K9/36 ,  G06K9/46 ,  G06K9/62 ,  G06K9/64 ,  G06K9/68 ,  G06T5/00 ,  G06T11/00

    CPC分类号： G06K9/00442 ,  G06K9/46 ,  G06K9/6202 ,  G06K2209/01

    摘要： Systems and methods for performing clustering of a document image are disclosed. A property of an extracted mark from a document is compared to the properties of the existing clusters. If the property of the mark fails to match any of the properties of the existing clusters, the mark is added as a new cluster to the existing cluster. One property that can be utilized is x size and y size, which is the width and height, of the existing clusters. Another property that can be employed is ink size, which refers to the ratio of black pixels to total pixels in a cluster. Yet another property that can be utilized is a reduced mark or image, which is a pixel size reduced version the bitmap of the mark and/or cluster. The above properties can be employed to identify mismatches and reduce the number of bit by bit comparisons performed.

    摘要翻译： 公开了用于执行文档图像的聚类的系统和方法。 将来自文档的提取标记的属性与现有集群的属性进行比较。 如果标记的属性无法匹配现有集群的任何属性，则该标记作为新集群添加到现有集群。 可以使用的一个属性是x size和y size，这是现有集群的宽度和高度。 可以使用的另一个属性是墨水大小，其指的是群集中黑色像素与总像素的比例。 可以使用的另一个属性是缩小的标记或图像，其是像素尺寸缩小版本的标记和/或集群的位图。 可以采用上述特性来识别不匹配并减少进行的逐比较比较。

    SEGMENTED LAYERED IMAGE SYSTEM
    3.
    发明申请
    SEGMENTED LAYERED IMAGE SYSTEM 有权
    SEGMENTED层状图像系统

    公开(公告)号：US20070025622A1

    公开(公告)日：2007-02-01

    申请号：US11465087

    申请日：2006-08-16

    申请人： Patrice Simard ,  Erin Renshaw ,  James Rinker ,  Henrique Malvar

    发明人： Patrice Simard ,  Erin Renshaw ,  James Rinker ,  Henrique Malvar

    IPC分类号： G06K9/36

    CPC分类号： H04N1/403 ,  G06K9/00456

    摘要： Systems and methods for encoding and decoding document images are disclosed. Document images are segmented into multiple layers according to a mask. The multiple layers are non-binary. The respective layers can then be processed and compressed separately in order to achieve better compression of the document image overall. A mask is generated from a document image. The mask is generated so as to reduce an estimate of compression for the combined size of the mask and multiple layers of the document image. The mask is then employed to segment the document image into the multiple layers. The mask determines or allocates pixels of the document image into respective layers. The mask and the multiple layers are processed and encoded separately so as to improve compression of the document image overall and to improve the speed of so doing. The multiple layers are non-binary images and can, for example, comprise a foreground image and a background image.

    摘要翻译： 公开了用于编码和解码文档图像的系统和方法。 根据掩码将文档图像分割成多个图层。 多层是非二进制的。 然后可以分别对各个层进行处理和压缩，以便对整个文件图像实现更好的压缩。 从文档图像生成蒙版。 生成掩模，以减少对于掩模和文档图像的多个层的组合大小的压缩估计。 然后使用掩模将文档图像分割成多个层。 掩模将文档图像的像素确定或分配到各个图层中。 掩模和多层被单独处理和编码，以便整体上改善文档图像的压缩并提高这样做的速度。 多层是非二进制图像，并且可以例如包括前景图像和背景图像。

    Adaptive compression of multi-level images
    4.
    发明申请
    Adaptive compression of multi-level images 有权
    多级图像的自适应压缩

    公开(公告)号：US20050244065A1

    公开(公告)日：2005-11-03

    申请号：US10916721

    申请日：2004-08-12

    申请人： Henrique Malvar ,  Erin Renshaw

    发明人： Henrique Malvar ,  Erin Renshaw

    IPC分类号： H04N1/41 ,  G06T9/00 ,  H04N7/26 ,  H04N7/28 ,  G06K9/36

    CPC分类号： G06K9/36 ,  H04N19/12 ,  H04N19/30 ,  H04N19/94

    摘要： The invention facilitates adaptive compression of multi-level images, such as captured digital images of a whiteboard, etc., encoding a bitstream comprising a color image component and a black-and-white image component. Either or both of a color and a black-and-white image can be output to a user based on user desires, receiving device capabilities, etc.

    摘要翻译： 本发明有助于对包括彩色图像分量和黑白图像分量的比特流进行编码的诸如捕获的白板等的数字图像的多级图像的自适应压缩。 可以基于用户期望，接收设备能力等向用户输出颜色和黑白图像中的一个或两者。

    Tarp filter
    6.
    发明申请
    Tarp filter 有权
    篷布过滤器

    公开(公告)号：US20060078210A1

    公开(公告)日：2006-04-13

    申请号：US11287671

    申请日：2005-11-28

    申请人： Patrice Simard ,  Henrique Malvar ,  Dinei Florencio ,  David Steinkraus

    发明人： Patrice Simard ,  Henrique Malvar ,  Dinei Florencio ,  David Steinkraus

    IPC分类号： G06K9/36

    CPC分类号： G06T9/004 ,  G06T9/007

    摘要： Systems and methods for performing adaptive filtering are disclosed. The present invention generates probabilities that can be used in an encoder, such as an arithmetic encoder and generates those probabilities in a computationally efficient manner. Probabilities of previously encoded coefficients are employed, effectively, in generating probabilities of the coefficients without regard to directional information. Thus, a large amount of information is adaptively and efficiently used in generating the probabilities. For the coefficients, the probability is computed based at least partly on at least one probability of a previously computed probability of a neighboring coefficient. Then, the coefficients are encoded using those computed probabilities.

    摘要翻译： 公开了用于执行自适应滤波的系统和方法。 本发明产生可以在诸如算术编码器的编码器中使用的概率，并以计算有效的方式生成这些概率。 先前编码的系数的概率被有效地用于在不考虑方向信息的情况下生成系数的概率。 因此，在生成概率时自适应地有效地使用大量的信息。 对于系数，概率至少部分地基于先前计算的相邻系数的概率的至少一个概率来计算。 然后，使用那些计算的概率对系数进行编码。

    Adaptive estimation and compensation of clock drift in acoustic echo cancellers
    9.
    发明授权
    Adaptive estimation and compensation of clock drift in acoustic echo cancellers 有权
    声回波消除器中时钟漂移的自适应估计和补偿

    公开(公告)号：US07680285B2

    公开(公告)日：2010-03-16

    申请号：US11465098

    申请日：2006-08-16

    申请人： Joseph Cox Ballantyne ,  Jack Wilson Stokes, III ,  Henrique Malvar

    发明人： Joseph Cox Ballantyne ,  Jack Wilson Stokes, III ,  Henrique Malvar

    IPC分类号： A61F11/06

    CPC分类号： H04B3/493 ,  H04M9/082

    摘要： A system and method for adaptive estimation and compensation of clock drift in echo cancellers is provided. The invention includes an acoustic echo cancellation system with a built in adaptive clock drift compensation system. The acoustic echo cancellation system has an AEC component that performs acoustic echo cancellation on data from a capture buffer, by also using information derived from a render buffer. The clock drift compensation system has access to this capture buffer and render buffer. The clock drift compensation system includes a clock drift compensator that calculates, based on the current location of the capture data being processed by the AEC component as well as additional information, the ideal location in the render buffer from which the AEC component should process data. The clock drift compensator further adjusts the current location in the render buffer from which the AEC component processes data based, at least in part, upon this ideal location. The clock drift compensator can further detect and correct for glitches in the hardware positions received from the render and capture devices.

    摘要翻译： 提供了一种用于回波消除器中的时钟漂移的自适应估计和补偿的系统和方法。 本发明包括具有内置自适应时钟漂移补偿系统的声学回波消除系统。 声学回声消除系统具有通过也使用从渲染缓冲器导出的信息来执行来自捕获缓冲器的数据的声学回声消除的AEC分量。 时钟漂移补偿系统可以访问此捕获缓冲区和渲染缓冲区。 时钟漂移补偿系统包括时钟漂移补偿器，其基于由AEC组件处理的捕获数据的当前位置以及附加信息计算AEC组件应从其处理数据的渲染缓冲区中的理想位置。 时钟漂移补偿器进一步调整渲染缓冲器中的当前位置，AEC组件至少部分地基于该理想位置处理数据。 时钟漂移补偿器可以进一步检测和纠正从渲染和捕获设备接收的硬件位置的毛刺。

    Spread spectrum modulation system and method for embedding digital information into digital or analog media
    10.
    发明授权
    Spread spectrum modulation system and method for embedding digital information into digital or analog media 有权
    扩频调制系统和数字信息嵌入数字或模拟媒体的方法

    公开(公告)号：US07382820B2

    公开(公告)日：2008-06-03

    申请号：US10865690

    申请日：2004-06-10

    申请人： Henrique Malvar ,  Dinei Florencio

    发明人： Henrique Malvar ,  Dinei Florencio

    IPC分类号： H04B1/69

    CPC分类号： G06T1/005 ,  G06T2201/0063 ,  G06T2201/0065 ,  G06T2201/0083 ,  G11B20/00086 ,  G11B20/00913 ,  H04B1/69

    摘要： A system and method for embedding information into digital media and later detecting the embedded information using a unique spread spectrum modulation technique. In general, the present invention removes interference caused by an original signal from the detection process thereby eliminating a major source of detection error. The interference caused by the original signal is removed by using the encoder knowledge about the original signal and modulating the energy of the embedded mark to compensate for the original signal interference. The present invention also includes a novel redundant bit representation technique causes a resulting average over a large sample to tend to zero, thereby reducing the vulnerability of the present invention to malicious collusion attacks.

    摘要翻译： 一种用于将信息嵌入数字媒体并随后使用独特的扩频调制技术检测嵌入信息的系统和方法。 通常，本发明从检测处理中去除由原始信号引起的干扰，从而消除了主要的检测误差。 通过使用关于原始信号的编码器知识和调制嵌入标记的能量来补偿原始信号干扰来消除由原始信号引起的干扰。 本发明还包括一种新颖的冗余比特表示技术使得大样本上的平均结果趋于零，从而将本发明的脆弱性降低到恶意串通攻击。