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The Deshredder: A visual analytic approach to reconstructing shredded documents

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3 Author(s)
Butler, P. ; Dept. of Comput. Sci., Virginia Tech, Blacksburg, VA, USA ; Chakraborty, P. ; Ramakrishan, N.

Reconstruction of shredded documents remains a significant challenge. Creating a better document reconstruction system enables not just recovery of information accidentally lost but also understanding our limitations against adversaries' attempts to gain access to information. Existing approaches to reconstructing shredded documents adopt either a predominantly manual (e.g., crowd-sourcing) or a near automatic approach. We describe Deshredder, a visual analytic approach that scales well and effectively incorporates user input to direct the reconstruction process. Deshredder represents shredded pieces as time series and uses nearest neighbor matching techniques that enable matching both the contours of shredded pieces as well as the content of shreds themselves. More importantly, Deshred-der's interface support visual analytics through user interaction with similarity matrices as well as higher level assembly through more complex stitching functions. We identify a functional task taxonomy leading to design considerations for constructing deshredding solutions, and describe how Deshredder applies to problems from the DARPA Shredder Challenge through expert evaluations.

Published in:

Visual Analytics Science and Technology (VAST), 2012 IEEE Conference on

Date of Conference:

14-19 Oct. 2012

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