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    • 8. 发明申请
    • Information Extraction Apparatus, Information Extraction Method, Information-Extraction Computer Program Product, And Storage Medium
    • 信息提取设备,信息提取方法,信息提取计算机程序产品和存储介质
    • US20100296109A1
    • 2010-11-25
    • US12779245
    • 2010-05-13
    • Masaki Ishii
    • Masaki Ishii
    • G06K1/00
    • H04N1/32224H04N1/32208
    • A reading control unit obtains image data pertaining to a printed material, in which information is embedded by printing multiple types of patterns in a matrix. A line-segment-sequence calculating unit calculates multiple substantially-vertical-line-segment sequences, each obtained by connecting substantially-vertically arranged patterns in the image data with a polygonal line, and calculates multiple substantially-horizontal-line-segment sequences, each obtained by connecting substantially-horizontally arranged patterns in the image data with a polygonal line. A search unit searches for a substantially-vertical lane segment and a substantially-horizontal line segment intersecting with each other for each combination of one of the substantially-vertical-line-segment sequences and one of the substantially-horizontal-line-segment sequences. An intersection-point calculating unit calculates an intersection point between the thus-found substantially-vertical line segment and the substantially-horizontal line segment as a position of a pattern. An extracting unit extracts the information embedded in the printed material by identifying types of patterns at calculated positions.
    • 读取控制单元通过以矩阵形式打印多种类型的图案来获得关于印刷材料的图像数据,其中嵌入有信息。 线段序列计算单元计算多个基本垂直线段序列,每个序列是通过用折线连接图像数据中的基本垂直布置的图案而获得的,并且计算多个基本上水平的线段序列,每个 通过将图像数据中的大致水平排列的图案与折线连接而获得。 搜索单元针对基本上垂直线段序列中的一个和基本上水平线段序列中的一个的每个组合搜索相对于彼此相交的基本上垂直的线段和基本上水平的线段。 交点计算单元计算这样找到的基本上垂直的线段和基本上水平的线段之间的交点作为图案的位置。 提取单元通过识别在计算的位置处的图案的类型来提取嵌入在打印材料中的信息。
    • 9. 发明授权
    • Extracting embedded information from a document
    • 从文档中提取嵌入信息
    • US07668336B2
    • 2010-02-23
    • US11359486
    • 2006-02-23
    • Masaki Ishii
    • Masaki Ishii
    • H04K1/00
    • G06T1/0021G06T2201/0051H04N1/32144H04N1/32352
    • An apparatus, method, system, computer program and product, each capable of extracting embedded information from a document. The method includes inputting the document having the embedded information, wherein the embedded information is arranged in an embedded area of the document so as to form a grid pattern, obtaining a horizontal regression line representing a horizontal line of the embedded area and a vertical regression line representing a vertical line of the embedded area, moving the horizontal regression line and the vertical regression line across the embedded area to respectively obtain a plurality of horizontal parallel lines and a plurality of vertical parallel lines, detecting a location of the embedded information based on intersection points formed by the plurality of horizontal parallel lines and the plurality of vertical parallel lines, extracting the embedded information from the location detected by the detecting step, and outputting the embedded information to an output device.
    • 一种装置,方法,系统,计算机程序和产品,每个能够从文档中提取嵌入信息。 该方法包括输入具有嵌入信息的文档,其中嵌入信息被布置在文档的嵌入区域中以形成网格图案,获得表示嵌入区域的水平线的水平回归线和垂直回归线 代表嵌入区域的垂直线,移动横跨嵌入区域的水平回归线和垂直回归线以分别获得多条水平平行线和多条垂直平行线,基于交点检测嵌入信息的位置 由多个水平平行线和多条垂直平行线形成的点,从由检测步骤检测的位置提取嵌入信息,并将该嵌入信息输出到输出装置。