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    Digital document processing for image enhancement
    1.
    发明公开
    Digital document processing for image enhancement 有权
    对图像增强模板数字处理

    公开(公告)号：EP1392047A3

    公开(公告)日：2007-05-16

    申请号：EP03255194.7

    申请日：2003-08-21

    申请人： SAMSUNG ELECTRONICS CO., LTD.

    发明人： Yi, Jong-hyon

    IPC分类号： H04N1/40

    CPC分类号： G06K9/00456 ,  G06T5/004 ,  H04N1/40062

    摘要： A digital image quality enhancing method that enhances a quality of a document image comprising pixels with a predetermined resolution and obtained by scanning a script comprising a combination of a background, a text, and an image. The method includes: updating history information according to a pixel type of a concerned pixel using previous history information of the concerned pixel; determining a block feature type of the concerned pixel using the pixel type and the updated history information of the concerned pixel; determining a type of an area to which the concerned pixel belongs based on a second type of a second area to which a first neighbouring pixel in a left direction of the concerned pixel belongs, a third type of a third area to which a second neighbouring pixel in a line above the concerned pixel belongs, the pixel type of the concerned pixel, and the determined block feature type; and performing different image quality enhancing processes based on the determined area type.

    Apparatus and method of matching symbols in a text image coding and decoding system
    2.
    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。

    Digital document processing for image enhancement
    9.
    发明公开
    Digital document processing for image enhancement 有权
    Digitale Verarbeitung von Vorlagen zur Bildverbesserung

    公开(公告)号：EP1392047A2

    公开(公告)日：2004-02-25

    申请号：EP03255194.7

    申请日：2003-08-21

    申请人： SAMSUNG ELECTRONICS CO., LTD.

    发明人： Yi, Jong-hyon

    IPC分类号： H04N1/40

    CPC分类号： G06K9/00456 ,  G06T5/004 ,  H04N1/40062

    摘要： A digital image quality enhancing method that enhances a quality of a document image comprising pixels with a predetermined resolution and obtained by scanning a script comprising a combination of a background, a text, and an image. The method includes: updating history information according to a pixel type of a concerned pixel using previous history information of the concerned pixel; determining a block feature type of the concerned pixel using the pixel type and the updated history information of the concerned pixel; determining a type of an area to which the concerned pixel belongs based on a second type of a second area to which a first neighbouring pixel in a left direction of the concerned pixel belongs, a third type of a third area to which a second neighbouring pixel in a line above the concerned pixel belongs, the pixel type of the concerned pixel, and the determined block feature type; and performing different image quality enhancing processes based on the determined area type.

    摘要翻译： 一种数字图像质量增强方法，其增强包括具有预定分辨率的像素并且通过扫描包括背景，文本和图像的组合的脚本而获得的文档图像的质量。 该方法包括：使用相关像素的先前历史信息根据相关像素的像素类型更新历史信息; 使用相关像素的像素类型和更新的历史信息来确定相关像素的块特征类型; 基于相关像素的左方向上的第一相邻像素所属的第二类型的第二类型来确定相关像素所属的区域的类型，第三类型的第三相邻像素的第三区域 在相关像素所属的一行中，相关像素的像素类型和确定的块特征类型; 以及基于确定的区域类型执行不同的图像质量增强处理。