Problems of Forensic Sciences 2017 Vol. 111 (CXI) 31-44
EXAMINATION OF DIGITALLY MANIPULATED DOCUMENTS USING MATLAB 7.10.0 AND ADOBE PHOTOSHOP 7.0
Komal SAINI, Shabnam Preet KAUR
Department of Forensic Science, Punjabi University, Patiala, India
Streszczenie
The availability of powerful digital image processing programs, such as Photoshop, has made the creation of digital forgeries from one or multiple images relatively easy. Digital documents are worked on in order to pass them off as originals with the intention of causing harm to a particular person or the public at large, or to serve as an accessory to support or deny a given claim. The present research focuses on the use of image processing tools for the examination of digitally manipulated documents. Both professional and non-professional individuals were asked to alter digitized samples to the best of their abilities and these were then analyzed using MATLAB 7.10.0 and Adobe Photoshop 7.0 software. The analysis of digital images using image processing software reveals numerous features that are useful in detecting alterations and confirming the authenticity of documents. This study demonstrates the successful detection of alterations made to digital documents by employing a defined set of tools from the above mentioned image processing techniques.
Słowa kluczowe
Digital images; White collar crime; Image processing; Digitally manipulated documents; Questioned document examination.