利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

10 条记录 (耗时 0.02 秒)

    Page segmentation with tilt compensation
    1.
    发明授权
    Page segmentation with tilt compensation 失效
    页面分割与倾斜补偿

    公开(公告)号：US5285504A

    公开(公告)日：1994-02-08

    申请号：US767029

    申请日：1991-09-27

    申请人： Theodosios Pavlidis ,  Jiangying Zhou

    发明人： Theodosios Pavlidis ,  Jiangying Zhou

    IPC分类号： G06K9/32 ,  G06K9/34

    CPC分类号： G06K9/3283 ,  G06K2209/01

    摘要： A method and an apparatus which scans and recognizes a page having columns of text or pictorial images. The scanned page is partitioned into blocks of scanlines and the column gap between the columns are identified by a projection profile process. With this technique the page can be severely tilted while under scan and still be properly recognized.

    摘要翻译： 扫描并识别具有文本或图形图像列的页面的方法和装置。 扫描的页面被划分为扫描线块，并且列之间的列间隙由投影轮廓处理标识。 使用这种技术，页面在扫描时可能会严重倾斜，仍然可以正确识别。

    Analog waveform decoder using peak locations
    3.
    发明授权
    Analog waveform decoder using peak locations 失效
    模拟波形解码器使用峰值位置

    公开(公告)号：US5504318A

    公开(公告)日：1996-04-02

    申请号：US192889

    申请日：1994-02-07

    申请人： Eugene B. Joseph ,  Theodosios Pavlidis

    发明人： Eugene B. Joseph ,  Theodosios Pavlidis

    IPC分类号： G06K7/14 ,  G06K7/10

    CPC分类号： G06K7/1486 ,  G06K7/14

    摘要： A method for decoding an analog waveform corresponding to a symbol comprises detecting the extrema locations of the waveform, and creating a feature vector from these extrema locations. The feature vector is compared to stored reference arrays corresponding to each symbol from an alphabet of possible symbols using statistical pattern recognition techniques to decode the waveform. The invention also features an analog waveform decoder that has reference storage for holding reference arrays, and a processor that creates and decodes a feature vector for the analog waveform.

    摘要翻译： 用于解码对应于符号的模拟波形的方法包括检测波形的极值位置，以及从这些极值位置创建特征向量。 使用统计模式识别技术将特征向量与来自可能符号的字母表的每个符号对应的存储的参考数组进行比较以对波形进行解码。 本发明还具有具有用于保持参考阵列的参考存储器的模拟波形解码器，以及用于产生和解码用于模拟波形的特征向量的处理器。

    Decoding bar code symbols by determining the best alignment of partial scans
    4.
    发明授权
    Decoding bar code symbols by determining the best alignment of partial scans 失效
    通过确定部分扫描的最佳对齐来解码条形码符号

    公开(公告)号：US5278398A

    公开(公告)日：1994-01-11

    申请号：US783412

    申请日：1991-10-28

    申请人： Theodosios Pavlidis ,  Joseph Cai

    发明人： Theodosios Pavlidis ,  Joseph Cai

    IPC分类号： G06K7/10 ,  G06K7/016 ,  G06K7/14

    CPC分类号： G06K7/1491 ,  G06K7/0166 ,  G06K7/14

    摘要： A method for decoding bar code symbols in which a bar code reader and associated components scan a bar code symbol, produce a representation of the symbol, and attempt to decode that representation in order to produce a character message. The method consists of the steps of storing a first representation of the bar code symbol corresponding to a first scan path through a first portion of said symbol smaller than the entire symbol, and storing a second representation of the bar code symbol corresponding to a second scan path through the symbol. The method then processes said representations in the event a successful decode has not taken place by utilizing the signal from a first scan with the signal from a subsequent scan to determine the best alignment at which successive scans can be concatenated to form a combined signal. The process is repeated with different subsequent scans until successful decoding of the combined signal.

    摘要翻译： 一种用于解码条形码符号的方法，其中条形码读取器和相关联的部件扫描条形码符号，产生符号的表示，并尝试对该表示进行解码以产生字符消息。 该方法包括以下步骤：将与第一扫描路径相对应的条形码符号的第一表示存储在小于整个符号的所述符号的第一部分上，并且存储对应于第二扫描的条形码符号的第二表示 通过符号的路径。 该方法然后在通过利用来自第一次扫描的信号与来自后续扫描的信号来确定连续扫描可以级联以形成组合信号的最佳对准的情况下未发生成功的解码的情况下处理所述表示。 以不同的后续扫描重复该过程，直到组合信号的成功解码。

    Decoding bar codes from multiple scans using element replacement
    6.
    发明授权
    Decoding bar codes from multiple scans using element replacement 失效
    使用元素替换解码来自多次扫描的条形码

    公开(公告)号：US5262626A

    公开(公告)日：1993-11-16

    申请号：US421269

    申请日：1989-12-06

    申请人： David P. Goren ,  Theodosios Pavlidis ,  Glenn Spitz

    发明人： David P. Goren ,  Theodosios Pavlidis ,  Glenn Spitz

    IPC分类号： G06K19/06 ,  G06K7/016 ,  G06K7/10 ,  G06K7/14

    CPC分类号： G06K7/1491 ,  G06K7/0166 ,  G06K7/14

    摘要： A method for reading bar code symbols which enables legitimate characters recognized by the code in use to be derived from a plurality of scans corresponding to illegitimate characters not recognized by the code in use is disclosed. The method includes the steps of storing representations of the bar code symbol which cannot be decoded to produce legitimate character(s). One of the representations is improved, or corrected, using another representation, and an attempt is made at decoding the corrected representation to produce a legitimate character. If the decoding attempt is not successful, further corrections are made in order to provide a representation which may be decoded to produce a legitimate character.

    Method of decoding bar code symbols from partial scans
    7.
    发明授权
    Method of decoding bar code symbols from partial scans 失效
    从部分扫描中解码条形码符号的方法

    公开(公告)号：US5241164A

    公开(公告)日：1993-08-31

    申请号：US970654

    申请日：1992-10-30

    申请人： Theodosios Pavlidis ,  Joseph Cai ,  Frederick Schuessler ,  Jiali D. Chen

    发明人： Theodosios Pavlidis ,  Joseph Cai ,  Frederick Schuessler ,  Jiali D. Chen

    IPC分类号： G06K7/016 ,  G06K7/14

    CPC分类号： G06K7/1491 ,  G06K7/0166 ,  G06K7/14

    摘要： A method for decoding bar code symbols in which a bar code reader and associated components scan a bar code symbol produce a representation of the symbol, and attempt to decode that representation in order to produce a character message. The method consists of the steps of storing a first representation of the bar code symbol corresponding to a first scan path through a first portion of said symbol smaller than the entire symbol, and storing a second representation of the bar code symbol corresponding to a second scan path through the symbol. The method then processes these representations in the event a successful decode has not taken place by utilizing the signal from a first scan with the signal from a subsequent scan to determine whether the information from successive scans can be concatenated to form a combined signal. The process is repeated with different subsequent scans until successful decoding of the combined signal. Specifically, timing information associated with the flying beam spot as it scans the bar code symbol in successive scan paths is used to determine where the scans will be stitched together.

    摘要翻译： 用于解码条形码符号的方法，其中条形码读取器和相关联的部件扫描条形码符号产生符号的表示，并尝试对该表示进行解码以产生字符消息。 该方法包括以下步骤：将与第一扫描路径相对应的条形码符号的第一表示存储在小于整个符号的所述符号的第一部分上，并且存储对应于第二扫描的条形码符号的第二表示 通过符号的路径。 该方法然后在通过利用来自后续扫描的信号的第一次扫描的信号来确定来自连续扫描的信息是否可以级联以形成组合信号的情况下未发生成功解码的情况下处理这些表示。 以不同的后续扫描重复该过程，直到组合信号的成功解码。 具体地说，在扫描连续扫描路径中的条形码符号时，使用与飞行光点相关联的定时信息来确定扫描将在哪里缝合在一起。

    Analog waveform decoder utilizing histogram of edge sizes
    10.
    发明授权
    Analog waveform decoder utilizing histogram of edge sizes 失效
    利用边缘大小直方图的模拟波形解码器

    公开(公告)号：US5311001A

    公开(公告)日：1994-05-10

    申请号：US96579

    申请日：1993-07-23

    申请人： Eugene B. Joseph ,  Theodosios Pavlidis

    发明人： Eugene B. Joseph ,  Theodosios Pavlidis

    IPC分类号： G06K7/00 ,  G06K7/14 ,  G06K7/10

    CPC分类号： G06K7/1486 ,  G06K7/14

    摘要： A method for decoding information contained in an analog waveform representative of a bar code symbol comprising the steps of identifying a decodable portion of an analog waveform; processing said decodable portion to obtain a plurality of waveform descriptors; and performing a high and low density decoding process to one or more of said plurality of waveform descriptors for decoding information contained in either a high or low density symbol respectively, is disclosed. The high density decoder used for decoding high density symbols utilizes extrema extents, i.e., areas of the peaks and valleys of the analog waveform which directly correlate to the size of the bars/spaces of a high density bar code. After locating the seed point of the waveform, each extrema extent is generated and thresholded at each peak/valley location to decide its size. The high density decoder is adaptive in that the thresholding extent value is updated as the solution grows away from the seed point. The low density decoder used for decoding low density symbols utilizes the widths of the peaks/valleys for decoding purposes and utilizes a histogramming and backtracking technique for removing noise levels from the analog waveform. Backtracking allows another decode attempt to be made if one is unsuccessful.

    摘要翻译： 一种用于解码包含在代表条形码符号的模拟波形中的信息的方法，包括识别模拟波形的可解码部分的步骤; 处理所述可解码部分以获得多个波形描述符; 并且对所述多个波形描述符中的一个或多个分别对高密度或低密度符号中包含的信息进行解码的高和低密度解码处理。 用于解码高密度符号的高密度解码器利用极限范围，即模拟波形的峰谷的区域，其直接与高密度条形码的条/空间的大小相关。 在定位波形的种子点后，每个极值范围在每个峰谷位置产生阈值，以确定其大小。 高密度解码器是自适应的，因为当解决方案远离种子点时，阈值范围值被更新。 用于解码低密度符号的低密度解码器利用峰/谷的宽度进行解码，并利用直方图和回溯技术来消除模拟波形的噪声水平。 回溯允许进行另一个解码尝试，如果不成功。