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Method for recovering English document shredded by paper shredder

A recovery method, shredder technology, applied in image data processing, instruments, calculations, etc., can solve the problems of less research and low efficiency in the recovery of broken English documents, and achieve the effect of less manpower and time cost

Inactive Publication Date: 2014-04-02
HOHAI UNIV
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Problems solved by technology

However, traditionally, splicing and restoration work needs 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, and computers have the ability to quickly process massive data, while There is still very little research on the recovery of broken English documents by computer algorithms, especially the recovery of broken paper that has been cut longitudinally and cross-cut. Therefore, there is an urgent need for a method that can effectively restore broken English documents

Method used

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  • Method for recovering English document shredded by paper shredder

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Embodiment Construction

[0016] The technical solutions of the present invention will be described in detail below, but the protection scope of the present invention is not limited to the embodiments.

[0017] The present invention is a recovery method for shredder-broken English documents based on the edge information of the broken paper and the geometric features of the broken characters. Firstly, the broken English document is converted into a digital image, and then the image is pre-processed on a computer. Extract the broken documents, and then pick out the broken pieces of paper in the same row according to the positioning line of each piece of paper and sort them column-wise within the row, and finally assemble the images of each row into a whole piece of paper.

[0018] With the help of four-line three-frame paper, it can be found that the distribution of 52 different uppercase and lowercase English letters is the most in the middle grid, while the distribution in the lower grid is the least, o...

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Abstract

The invention discloses a method for recovering an English document shredded by a paper shredder. The method specifically comprises three steps of image digitization, image preprocessing and shred splicing, wherein the image preprocessing comprises binarization processing of boundary points through the variation trend of gray. According to the method, the entire English document can be spliced within a short time, so that the labor is reduced, and the working efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of image processing and information recovery, in particular to a method for recovering English documents broken by a shredder based on edge information of broken paper pieces and geometric features of broken characters. Background technique [0002] Paper shredders have become an important part of daily office work. Many enterprises, scientific research institutions and the military will use paper shredders to destroy important documents and materials out of confidentiality. In real life, in many cases, it is necessary to Recover broken documents. However, traditionally, splicing and restoration work needs 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, and computers have the ability to quickly process massive data, while There is still very little research on the recovery o...

Claims

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Application Information

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IPC IPC(8): G06T5/50G06T7/00
Inventor 沈亚雄雷浩杨捷
Owner HOHAI UNIV
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