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Paper-shredder broken-document restoration method based on English character characteristics

A technology for fragmenting documents and text features, applied in image data processing, instruments, computing, etc., can solve problems such as low efficiency of English document splicing

Active Publication Date: 2014-08-20
HOHAI UNIV
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Problems solved by technology

[0003] Aiming at the problem of low English document splicing efficiency in the existing broken paper splicing method, the present invention proposes a shredder broken document restoration method based on English character features

Method used

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  • Paper-shredder broken-document restoration method based on English character characteristics
  • Paper-shredder broken-document restoration method based on English character characteristics
  • Paper-shredder broken-document restoration method based on English character characteristics

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Embodiment Construction

[0044] Below in conjunction with accompanying drawing, the technical scheme of invention is described in detail:

[0045]The paper shredder shredded document restoration method based on the English character feature proposed by the present invention is according to figure 1 The flow chart shown is realized, using the scanner to scan 38 pieces of paper document fragments, and the output is as follows figure 2 The electronic image of each piece of shredded paper is shown, use matlab software to import each piece of shredded paper,

[0046] according to image 3 The conversion process shown in the figure generates a grayscale matrix A corresponding to each shredded paper k (k=1,2...38), for gray matrix A k (k=1,2...38) combined with formula (1) to perform binarization processing to obtain a binary matrix B k (k=1,2...38), combined with formula (2) to generate a binary sequence Q k (k=1,2...38);

[0047] Such as Figure 4 As shown (the slash part is the space occupied by t...

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Abstract

The invention discloses a paper-shredder broken-document restoration method based on English character characteristics and belongs to the technical field of image processing. The document restoration method includes four steps of image digitalization, image preprocessing, image clustering and image splicing. The image preprocessing refers to applying matlab software to feed each piece of broken paper so as to generate a gray-level matrix corresponding to each piece of broken paper, and carrying out binarization processing on the gray-level matrixes so as to generate a binary sequence. The image clustering step refers to rendering of the binary sequence according to the English character characteristics and clustering original images according to the rendering result. The image splicing step refers to carrying out longitudinal splicing on the original image according to the clustering result based on a minimum cumulative edge distance principle and the carrying out transverse splicing on the splicing result. The paper-shredder broken-document restoration method based on the English character characteristics solves a restoration problem of English documents which are broken by a paper shredder and fills blanks of the prior art and at the same time, through clustering, the splicing efficiency is improved significantly.

Description

technical field [0001] The invention relates to a shredder shredded document recovery method based on English character features, and belongs to the technical field of document recovery in image processing. Background technique [0002] The splicing of broken documents has important applications in the fields of judicial evidence restoration, historical document restoration, and military intelligence acquisition. Traditionally, splicing and restoration work has to be done manually, with high accuracy, but low efficiency, especially when the number of fragments is huge, it is difficult for manual splicing to complete the task in a short time. With the development of computer technology, people are trying to develop automatic splicing technology for shredded paper to improve the efficiency of splicing and restoration. An excellent method should be able to splice the same type of shredded paper without manual intervention. It obtains relevant information through scanning and i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/50G06T3/40
Inventor 冯钧陈焕霖杨艳林陈丽君唐志贤许潇朱忠华盛震宇
Owner HOHAI UNIV
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