Image Size Variation Influence on Corrupted and Non-viewable BMP Image

International Research and Innovation Summit 2017

Azmi, Tengku Norsuhaila T.^1 ; Abdullah, Nurul Azma^1 ; Rahman, Nurul Hidayah Ab^1 ; Hamid, Isredza Rahmi A.^1 ; Wen, Chuah Chai^1

Information Security Interest Group (ISIG), Faculty of Computer Science and Information Technology, Universiti Tun Hussein Onn Malaysia, Johor, Malaysia^1

关键词: File sizes;    Image information;    Joint photographic experts group;    JPEG files;    JPEG image;    Size variation;    Speed up;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/226/1/012104/pdf
DOI  :  10.1088/1757-899X/226/1/012104

来源: IOP

【 摘 要 】

Image is one of the evidence component seek in digital forensics. Joint Photographic Experts Group (JPEG) format is most popular used in the Internet because JPEG files are very lossy and easy to compress that can speed up Internet transmitting processes. However, corrupted JPEG images are hard to recover due to the complexities of determining corruption point. Nowadays Bitmap (BMP) images are preferred in image processing compared to another formats because BMP image contain all the image information in a simple format. Therefore, in order to investigate the corruption point in JPEG, the file is required to be converted into BMP format. Nevertheless, there are many things that can influence the corrupting of BMP image such as the changes of image size that make the file non-viewable. In this paper, the experiment indicates that the size of BMP file influences the changes in the image itself through three conditions, deleting, replacing and insertion. From the experiment, we learnt by correcting the file size, it can able to produce a viewable file though partially. Then, it can be investigated further to identify the corruption point.