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    Apparatus and method of matching symbols in a text image coding and decoding system
    1.
    发明公开
    Apparatus and method of matching symbols in a text image coding and decoding system 有权
    装置和匹配的符号的方法在文本图像编码和解码系统

    公开(公告)号：EP1950950A1

    公开(公告)日：2008-07-30

    申请号：EP08150512.5

    申请日：2008-01-22

    申请人： Samsung Electronics Co., Ltd ,  Purdue Research Foundation

    发明人： Ohk, Hyung-soo ,  Yi, Jong-hyon ,  Bouman, Charles A. ,  Figuera, Maribel

    IPC分类号： H04N1/411

    CPC分类号： H04N1/4115

    摘要： An apparatus of a text image coding and decoding system (300) includes a matching unit (330) to compute a first distance between a symbol of a text image with a reference symbol of a symbol dictionary, to determine whether the symbol matches with the reference symbol according to the first distance and a first reference, and to compute a second distance between the one of the symbols with the reference symbol if the symbol matches with the reference symbol according to the first distance and the first reference, and to determine whether the symbol matches with the reference symbol according to the second distance and a second reference.

    摘要翻译： 文本图像编码和解码系统（300）的装置包括一个匹配单元（330）来计算与一个符号字典的参考符号的文本图像的符号之间的第一距离，以确定性矿符号是否与参考相匹配 符号雅丁所述第一距离和第一参考，并计算与如果符号与雅丁参考符号到所述第一距离和第一参考匹配的参考符号的符号的一个之间的第二距离，和确定性矿是否 符号与所述参考符号gemäß第二距离和第二参考相匹配。

    Halftoning method and system
    5.
    发明公开
    Halftoning method and system 审中-公开
    半色调方法和系统

    公开(公告)号：EP1558017A3

    公开(公告)日：2007-12-12

    申请号：EP05001471.1

    申请日：2005-01-25

    申请人： Hewlett-Packard Development Company, L.P. ,  Purdue Research Foundation

    发明人： He, Zhen ,  Bouman, Charles A.

    IPC分类号： H04N1/405

    CPC分类号： H04N1/405 ,  H04N1/4057

    摘要： A combined dot density (FM) and dot size (AM) modulation halftoning method and system produces a halftone in which both the density and size of the dots are modulated. In addition to modulating the dot size and density, the halftoning method can also explicitly control the size of dot clusters at different intensity levels.

    摘要翻译： 组合点密度（FM）和点尺寸（AM）调制半色调方法和系统产生半色调，其中点的密度和大小都被调制。 除了调整点的大小和密度外，半色调方法还可以明确控制不同强度等级下的点群大小。

    Halftoning method and system
    6.
    发明公开
    Halftoning method and system 审中-公开
    Halbtonrasterungsverfahren und系统

    公开(公告)号：EP1558017A2

    公开(公告)日：2005-07-27

    申请号：EP05001471.1

    申请日：2005-01-25

    申请人： Hewlett-Packard Development Company, L.P. ,  Purdue Research Foundation

    发明人： He, Zhen ,  Bouman, Charles A.

    IPC分类号： H04N1/405

    CPC分类号： H04N1/405 ,  H04N1/4057

    摘要： A combined dot density (FM) and dot size (AM) modulation halftoning method and system produces a halftone in which both the density and size of the dots are modulated. In addition to modulating the dot size and density, the halftoning method can also explicitly control the size of dot clusters at different intensity levels.

    摘要翻译： 组合点密度（FM）和点大小（AM）调制半色调方法和系统产生半色调，其中调节点的密度和尺寸。 除了调整点大小和密度之外，半色调方法还可以明确地控制不同强度级别的点簇的大小。

    Image data processing methods, hard imaging devices, and processor usable media
    7.
    发明公开
    Image data processing methods, hard imaging devices, and processor usable media 审中-公开
    Verfahren zur Bilddatenverarbeitung，Bilddruckvorrichtungen，und prozessorbenutzbare Medien

    公开(公告)号：EP1555803A2

    公开(公告)日：2005-07-20

    申请号：EP05250147.5

    申请日：2005-01-13

    申请人： Hewlett-Packard Development Company, L.P. ,  Purdue Research Foundation

    发明人： He,Zhen, 9426 SW Maplewood Drive, ,  Chang, Ti Chiun ,  Bouman, Charles A. ,  Allebach, Jan P.

    IPC分类号： H04N1/405

    CPC分类号： H04N1/40037 ,  H04N1/4052

    摘要： Image data processing methods, hard imaging devices (10), and processor usable media are described. According to one embodiment, an image data processing method includes accessing image data of an image and comprising a plurality of pixels (40), defining a plurality of subsets (32) of the pixels (40), defining an overlapping region (42) comprising image data of pixels (40) located adjacent to a boundary (34) intermediate one and an other of the subsets (32), independently processing the image data of the one and the other of the subsets (32) individually comprising comparing the image data for respective ones of the pixels (40) with a plurality of thresholds corresponding to respective ones of the pixels (40), and modulating the thresholds of the pixels (40) of the overlapping region (42) using a common modulation pattern for both the processing of the one and the other subsets (32). Some embodiments relate to halftone processing using error diffusion.

    摘要翻译： 描述图像数据处理方法，硬成像设备（10）和处理器可用介质。 根据一个实施例，图像数据处理方法包括访问图像的图像数据并且包括定义多个像素（40）的子集（32）的多个像素（40），其限定重叠区域（42），其包括 位于与一个和另一个子集（32）之间的边界（34）相邻的像素（40）的图像数据，独立地处理子集（32）中的一个和另一个的图像数据，包括比较图像数据 对于具有对应于像素（40）中的各个的多个阈值的像素（40）中的各个像素（40），并且使用公共调制图案来调制重叠区域（42）的像素（40）的阈值， 处理一个和另一个子集（32）。 一些实施例涉及使用误差扩散的半色调处理。

    Image data processing methods, hard imaging devices, and processor usable media
    8.
    发明公开
    Image data processing methods, hard imaging devices, and processor usable media 审中-公开
    一种用于处理图像数据时，图像打印设备和介质prozessorbenutzbare方法

    公开(公告)号：EP1555803A3

    公开(公告)日：2006-03-01

    申请号：EP05250147.5

    申请日：2005-01-13

    申请人： Hewlett-Packard Development Company, L.P. ,  Purdue Research Foundation

    发明人： He,Zhen, 9426 SW Maplewood Drive, ,  Chang, Ti Chiun ,  Bouman, Charles A. ,  Allebach, Jan P.

    IPC分类号： H04N1/405

    CPC分类号： H04N1/40037 ,  H04N1/4052

    摘要： Image data processing methods, hard imaging devices (10), and processor usable media are described. According to one embodiment, an image data processing method includes accessing image data of an image and comprising a plurality of pixels (40), defining a plurality of subsets (32) of the pixels (40), defining an overlapping region (42) comprising image data of pixels (40) located adjacent to a boundary (34) intermediate one and an other of the subsets (32), independently processing the image data of the one and the other of the subsets (32) individually comprising comparing the image data for respective ones of the pixels (40) with a plurality of thresholds corresponding to respective ones of the pixels (40), and modulating the thresholds of the pixels (40) of the overlapping region (42) using a common modulation pattern for both the processing of the one and the other subsets (32). Some embodiments relate to halftone processing using error diffusion.