Biography

Having completed my First degree and Master's degree here at University of Surrey, I decided to continue my studies and embark upon a Ph.D. in Digital Image Forensics.  I began my Ph.D. studies in January 2009 with a view to complete by June 2012.

I am supervised by Prof. Anthony T. S. Ho, and co-supervised by Dr. Bogdan Vrusias.  My industrial supervisor is Mr. Alan Woodward, Charteris Plc.

My research is funded by an EPSRC/CASE award, in collaboration with Charteris Plc.

Research Interests

My primary research interests are broadly covered by 'Multimedia Security'.  Of particular interest are the fields of Digital Image Forensics, Steganology, and Digital Watermarking.

My Ph.D. focuses on the identification of tools for determining the origin of digital images, referred to in Image Forensic circles as "Camera Identification".  I have reviewed the use of Statistical Process Control for analysing variations in successive images captured from a number of different devices.  This work has demonstrated that each device operates differently, according to the specifications that were incorporated by the manufacturer.  Conversely, when we review multiple devices of the same make and model, the variations are more subtle, indicating that these devices behave in a similar fashion.

My current work is focused upon accurately classifying High Dynamic Range (HDR) images that are becoming ubiquitous in the digital camera marketplace.  By identifying intrinsic anomalies that result from HDR processing, it has been possible to accurately classify multiple HDR and LDR images taken from a single device (Apple iPhone 4).  My aim is to now extend this model to identify the source application that was used to create an HDR image.  This will involve studying the behaviour of 6 Apps from the iPhone App Store, as well as the native camera application.

Publications

• P. J. Bateman, A. T. S. Ho, and A. Woodward, "Image forensics of digital cameras by analysing image variations using statistical process control", in Proceedings of the 7^th International Conference on Information, Communications and Signal Processing, Macau, China, 2009.
• P. J. Bateman, A. T. S. Ho, and A. Woodward, "Accurate Detection of Out-of-Control Variations From Digital Camera Devices", ISCAS 2010, pp. 3056-3059, Paris, France, 2010.
• X. Zhao, P. J. Bateman, and A. T. S. Ho, "Image Authentication Using Active Watermarking and Passive Forensics Techniques", Multimedia Analysis, Processing and Communications, vol. 346(2011), pp. 139-183, 2011.
• P. J. Bateman, A. T. S. Ho, and J. Briffa, "Image Forensics of High Dynamic Range Imaging", International Workshop on Digital Forensics and Watermarking, Atlantic City, NJ, 2011.