Print file identification method based on print font library analysis

A technology for printing files and fonts, applied in character and pattern recognition, computer parts, instruments, etc., can solve the problems of affecting the recognition speed of the recognizer and increasing the amount of calculation

Active Publication Date: 2014-05-21
XIDIAN UNIV
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Problems solved by technology

However, the feature dimension is up to 256 dimensions, which will seriously affe

Method used

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  • Print file identification method based on print font library analysis
  • Print file identification method based on print font library analysis
  • Print file identification method based on print font library analysis

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Experimental program
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Embodiment

[0041] The structural block diagram of printer intelligent identification in this embodiment is as follows: figure 1 As shown, the main steps include: extracting the features of Chinese character images of different models of sample printers, and through the learning process, training the samples into feature value libraries corresponding to the same Chinese characters of different models of printers used by the system, that is, stroke features and simplified HU moment features Value, that is, to obtain the statistical information of the total number of pixels and the number of intersection points of the Chinese character image, and then match it with the characteristic Chinese character library in turn to complete the rough classification of the Chinese character library, and the result will be used as the matching object for the next step of recognition; then, on the basis of the previous step , use the HU moment feature value to characterize the Chinese character in a deeper...

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Abstract

The invention relates to a print file identification method based on print font library analysis and belongs to the technical field of print file identification. The method mainly comprises the steps of extracting the characteristics of Chinese character images of various types of sample printers, through a learning process, training samples into a characteristic value library corresponding to the same Chinese character of various types of printers used by a system, and matching the characteristic value library with characteristic Chinese character libraries sequentially to complete rough classification of the Chinese character libraries; based on the step above, characterizing Chinese characters more deeply through HU-moment characteristic values until the characterized characteristic information can uniquely identify the Chinese characters in the images. The computer identification method for identifying character images of different types of the printers through commonly-used character libraries is clear in theory, simple in process, convenient to operate, rapid and accurate and is an effective and workable method. The method integrates various technologies and useful information to improve the identification accuracy and provides an automatic computer print file identification system for public security and physical evidence identification departments.

Description

technical field [0001] The invention relates to a print file identification method based on print font library analysis, and belongs to the technical field of print file identification. Background technique [0002] With the popularization of office automation, printers are widely used in daily life and work. Moreover, printed documents are the most important form of written records. No matter in criminal proceedings, civil or administrative proceedings, the number of printed documents for inspection has increased sharply. identification) and formation time test. Among them, how to use computer application technology to quickly determine the type of printer will provide important clues for the investigation of the case, but such methods have not been reported so far, and even research materials in this area are also very scarce. [0003] Since the working principles of various printers and the font library used for printing are not the same, there should be differences in ...

Claims

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Application Information

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IPC IPC(8): G06K9/20
Inventor 姚勇王韦桦张东方郭红艳
Owner XIDIAN UNIV
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