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Building a Database of DQT Information to Identify a Source of the SmartPhone JPEG Image File
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 Title & Authors
Building a Database of DQT Information to Identify a Source of the SmartPhone JPEG Image File
Kim, MinSik; Jung, Doowon; Lee, Sang-jin;
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 Abstract
As taking pictures by using smartphones has become more common in society, there are many incidents which are unexpected manipulation of images and leak of confidential information. Because of those incidents, demands that identify forgery/alteration of image file and proves of the original copy is constantly increasing. In general, smartphone saves image file as JPEG form and it has DQT which determines a compression rate of image in a header part of image. There is also DQT in Thumbnail image which inside of JPEG. In previous research, it identified a smartphone which take image by only using DQT, However, the research has low accuracy to identify the devices. There are two main purposes in this research. First, this research will analogize a smartphone and an application that takes a picture, edits and save an image file by testing not only about a DQT information but also a information of Thumbnail image. Second, the research will build a database of DQT and Thumbnail information in JPEG file to find more accurate image file`s origin.
 Keywords
JPEG;DQT;Thumbnail;SmartPhone;Image;
 Language
Korean
 Cited by
1.
Mobile forensic reference set (MFReS) and mobile forensic investigation for android devices, The Journal of Supercomputing, 2017, 1573-0484  crossref(new windwow)
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