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High Speed Electronic Recreation of Shredded Documents Disclosure Number: IPCOM000015927D
Original Publication Date: 2002-May-15
Included in the Prior Art Database: 2003-Jun-21

Publishing Venue



This invention will generate an electronic recreation of a shredded document and then give instructions for the physical recreation of the same document. For the purpose of this disclosure, individual pieces of a shredded documents will be called chads. This invention entails the building a database containing the physical characteristics of each chad from a shredded document. Physical characteristics to be collected include (but are not limited to) thickness, texture, weave, strand orientation, shape, color, weight, and most important the Red/Blue/Green or black and white high resolution pixel data. Then, various computer algorithms will analyze the physical characteristics of each chad as stored in the database and reassemble the digitized images back into their original orientation, thereby creating an electronic copy of the original document. In the case of a text document, the shredding action will slice directly through individual characters, leaving a portion of the character on one chad and a portion of the same character on an adjacent chad. Using the concept of "one chad starts where the adjacent chad left off", computer algorithms can search the database for perfect matches of edge pixel transitions. The evaluation of a single chad will result in the addition of the four adjacent chads (top, bottom, left and right). This recreation process will build out in all directions until no unique edge information is available (for example, along a white edge). As chads are placed together they will begin to form characters. As characters are placed together they will begin to form words, and then sentences, and then paragraphs. Language heuristics will play an important role in document recreation. Chad analysis will be used to recreate blocks of the original document(s), and then language heuristics will be employed to arrange these blocks based on grammatical and contextual rules. The result will be an electronic recreation of the shredded document(s).