However, the development of commercial shredded document reconstruction software 48 casts doubts on the bene. Up to 70 percent of a documents content can be recovered. First of all, the visual content of the strips is automatically extracted and represented by a number of numerical features. Shredded document reconstruction software now exists 0 comments north andover, ma january 23, 2015 identity thieves now have a new tool at their disposal. A grouping of the strips belonging to a same page is thus realized by means of a clustering operator, to ease the. The fbi is piecing together shredded documents found in. Reconstruction of shredded document based on image feature matching. To reconstruct the document, a human user clicks on an individual piece that has been ingested into the software, then selects which side of the piece to check for a match. Well it looks like software can now restore shredded documents.
The objective of shredded document reconstruction is to sort the unorganized shred images and recover the correct order in the original document. A desktop software application that will put all of the pieces back together in a fraction of the time it would take to do manually. North andover, ma january 23, 2015 identity thieves now have a new tool at their disposal. Shredded document reconstruction software now exists 0 comments. Reconstruction of shredded document using image mosaicing. If you purchase the software, there are no restrictions on who can purchase this software, then you can take any shredded document, scanit, and the software will reassemble it for you in a fraction of the time of someone doing it by hand. File shredder programs are software tools that permanently delete files on your computer. Then, a document reconstruction software creates an id number and distinguishes characteristics of each shred taking things like size, color, and font into consideration. Jul 17, 2003 technology to reconstruct documents that have been conventionally shredded is finding niche in espionage and other industries. The first type is a shred that tends to be long, slender strips the full length of the document being shredded. Shredded document reconstruction software now exists. These days theres a darn bit of software to help you do it.
One or more shredhub stations are placed throughout your workspaces, so sensitive. Reconstruction of shredded documents remains a signi. There are numerous levels of paper shredding level 1 12 mm strips or 11 x 40mm particles level 2 6 mm strips or 8 x 40mm particles level 3 2 mm strips or 4 x 30mm particles confidential level 4 2 x 15 mm particles commercially. Placer results on black and white document images it can be observed that there is an absence of variance in the distance values. Jul 31, 2009 not all shredded documents can be put back together. Sign up cvpr19 singleimage piecewise planar 3d reconstruction via associative embedding. Jul 18, 2008 these days theres a darn bit of software to help you do it. The pages are scanned, and software analyzes the pieces for possible matches. Currently, this process is much too slow and too laborintensive, partic.
The iranians did things the hard way, but computers make reassembling shredded documents a lot easier. Reconstruction of the shredded document is very similar to solving jigsaw puzzle 3. Strip shredded document reconstruction using optical character recognition. The fbi is piecing together shredded documents found in its raid of michael cohens home. Imagebased techniques for shredded document reconstruction. Dec 06, 2011 to reconstruct the document, a human user clicks on an individual piece that has been ingested into the software, then selects which side of the piece to check for a match. The problem is different from solving jigsaw puzzles since curved boundaries and color information are not available. For optimal performance split unshredder on 2 monitors. Reconstructing a document from fragments may be considered an unusual but highly specialized case of puzzle reconstruction 4, 5. Unshreddernew shredded document reconstruction software this new working tool was developed by experienced private investigators to reconstruct shredded documents in the most comfortable and clean way. The earliest study on shredded document recovery was reported in 2004. As you may or may not know, deleting a file just hides it from the operating system.
Unshredder is a simple program that unleashes the power of a desktop computer to reduce the time consumed by investigators reconstructing shredded documentary evidence. The ability to reconstruct shredded documents will potentially yield information that may save lives or offer critical information about an adversarys plans. It sounds insane, but darpa recently laid down a challenge to computer scientists. In this mapping, each fragment, where and, is assigned to one position in the twodimensional euclidean space, such that the virtual fragments are represented by the.
Photo stitching is similar to shredded document reconstruction in that many smaller pieces are combined to make a larger image4. Jun 04, 2008 unshreddernew shredded document reconstruction software. Currently, this process is much too slow and too laborintensive, particularly if the documents are handwritten. Paper shredders arent secure privacy tips consumer. This has been an area of study since the mid60s 5, although the focus has generally been on using the shape of the pieces to reconstruct the puzzle 6, which would be less useful when reconstructing shredded documents. They claim it can handle stripshred, crossshred and torn pages and describe it as a a menu driven windows application that automates the reassembly of. Previous research and analysis on the reconstruction of crosscut shredded text document rccstd are mainly based on the likelihood and the traditional heuristic algorithm. Unshreddernew shredded document reconstruction software. Usually, the pieces of different pages have been mixed. Reconstruction of shredded paper documents by feature matching. Indesign fx is a collection of selfcontained effects projects designed to be completed in ten minutes or less. The possibility and ease of reconstruction depends on the size of the shredsthe smaller and more numerous the pieces, the harder it is to reconstruct a document. The reconstruction of crosscut shredded text documents rccstd problem is defined as an injective map, where the set of the fragments belongs to one singleside printed document and is the number of gridshaped images.
Jul 30, 2015 24 mar 2012 ap television berlin february 2012 1. This paper proposes an imagebased technique for shredded document reconstruction. Feb 18, 2016 reconstruction of shredded document is particularly predominant to import expertise which has broad software in forensic science, artwork conservation, spying, military and archaeology. Shredhubs onsite document destruction preserves the privacy of any sensitive information that needs to be destroyed, such as financial reports, human resource files, or client data.
Unshredder shredded document reconstruction system the. Pdf shredded document reconstruction using mpeg7 standard. Unshredder software for shredded documents reconstruction. Comparative study on reconstruction of shredded documents. There are clear parallels between shredded document reconstruction and automatic jigsaw puzzle solving though. Darpas almostimpossible challenge to reconstruct shredded. Although intended for law enforcement officials investigating crimes such as.
The difference between shredded document and jigsaw puzzle is conveniently that the shredded document does now not have delicate contours. Technology to reconstruct documents that have been conventionally shredded is finding niche in espionage and other industries. Unshredder shredded document reconstruction system home. A solution to reconstruct crosscut shredded text documents. Pioneered shredded document reconstruction software to reconstruct strip and cross shredded documents electronically using proprietary techniques with microsoft technologies. This project looks at the challenges involved in the automatic reconstruction of strip vertically cut and cross both vertically and horizontally cut shredded documents. The reconstruction of destroyed paper documents is of more interest during the last years.
Fbi is reconstructing shredded documents obtained during. The difficulty additionally arises as a result of their shape. Mar 24, 2020 if you purchase the software, there are no restrictions on who can purchase this software, then you can take any shredded document, scanit, and the software will reassemble it for you in a fraction of the time of someone doing it by hand. Unsurprisingly its called unshredder and they label it the first commercial document reconstruction tool in the world. Software can now restore shredded documents hacked. Reconstructing shredded document is a time consuming job for criminal investigators. Taught by expert mike rankin, the series explores every aspect of indesigns graphic effects capabilities through realworld examples, all without relying on photoshop or illustrator. It isnt really gone until that same space is overwritten by something else. To overcome these tedious and laborious task technique in image processing that are image mosaicing is used. Jul 23, 2011 there are numerous levels of paper shredding level 1 12 mm strips or 11 x 40mm particles level 2 6 mm strips or 8 x 40mm particles level 3 2 mm strips or 4 x 30mm particles confidential level 4 2 x 15 mm particles commercially. The winning team has finished two days ahead of schedule. The convenience, efficiency, speed and proven results of using a dedicated application will slash the time taken to complete the job and as a direct consequence the costs to complete an investigation are minimized. How easy is it to recover a document that has been shredded.
After presenting a formal model for rsstd, we suggest two solution approaches. Ford said that success in document reconstruction ultimately depends on three primary factors. A research team in germany has developed a computersoftware system to piece together some 45 million pages of secret police files ripped into 600 million pieces. It does not matter if the paper is vertical shredded, cross shredded, or torn. How to select suppliers for your shredding truck business. The unshredding problem is of interest in the fields of forensics, investigative sciences, and archaeology. The pieces of torn documents are scanned on both sides, and the digital images are then analysed by a cluster of 16. Placer results on colorful images figure 11 shows the results of running the placer on black and white document images. 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.
Ocraided crosscut shredded document reconstruction student. This topic is relevant to the fields of forensics, investigative sciences, and archeology. Unshredder is the first commercial document reconstruction tool in the world. According to slate, a typical computer program will feed the shreds into a scanner. The generalized reconstruction problem remains formidable, and we do not consider that problem here. Based on the grouping result from shred coding and the similarity measure, document reconstruction problem is modeled as a weighted digraph directed graph. Fbi is reconstructing shredded documents obtained during cohen raid. Software to help reconstruct former secret police files youtube.
These programs combine many smaller photos into a large panorama. Based on the model from the above problem, we should propose an advanced algorithm to deal with this problem. By means of this algorithm, we modeled for the problem of splicing the shredded paper and solved it. Shred images for reconstruction are acquired by scanning the shredded document placed on a blue background, followed by object segmentation and length nor malization in the shredding direction. This paper introduced the algorithm of splicing the shredded paper based on the matching to texture feature. Photo stitching is a field of software, which is similar to document reconstruction. One recent initiative looking at the reconstruction problem was the 2011 darpa1. Splicing the shredded paper means the technology that, according the paper, which has been shredded to design a particular algorithm to splice and recover the original paper.
This type of shred tends to be easily reconstructed, especially with document reconstruction software. The possibility and ease of reconstruction depends on the size of the shredsthe smaller and more numerous the pieces, the harder it. Imaging for crime detection and prevention 2011 icdp 2011, 4th international conference on. Combining forces to reconstruct strip shredded text documents. For the first time in history, unshredder has made the reconstruction of shredded documents possible, feasible and fast. We propose a solution for the computeraided reconstruction of stripcut shredded documents. The possibility and ease of reconstruction depends on the size of the shredsthe smaller and more numerous the pieces, the harder it is to. On the one hand, rsstd can be reformulated as a standard traveling salesman problem and solved by wellknown algorithms such as the chained lin. Close of woman piecing together a document destroyed by the east german ministry for state security, commonly known as the stasi 2. Unshredder is the first shredded document reconstruction software crime authorities can license for inhouse use. Unshredder shredded document reconstruction system. May 30, 2018 fbi is reconstructing shredded documents obtained during cohen raid. When each of the two shredders is fed a blank sheet of paper, the resulting. Reconstruction of shredded document is particularly predominant to import expertise which has broad software in forensic science, artwork conservation, spying, military and archaeology.
Close of woman piecing together a document destroyed by the east german ministry for state security, commonly known as. Software to help reconstruct former secret police files. Not all shredded documents can be put back together. Reconstruction of shredded document based on image feature. Existing approaches to reconstructing shredded docu. Darpas almostimpossible challenge to reconstruct shredded documents. Pdf imagebased techniques for shredded document reconstruction. In this work, we focus on the reconstruction of strip shredded text documents rsstd which is of great interest in investigative sciences and forensics. The second type is smaller and has been smashed, ripped and torn. It then identifies potential neighboring paper shreds.
86 385 88 958 241 410 1012 1102 554 1459 1447 1495 957 1547 1169 1327 1351 353 1330 382 534 386 685 604 881 405 698 1196 1465 1008 755 808 86 379 1203 561 982 1387 1136 827 783 1438 1315 1389 684 379