Project Topic : Image Differentiation Name : Bo Li Supervisor: Dr. Jimmy Li

Why this project is worth doing?  Digital forgeries are hard to distinguish from authentic ones  Easy to be created  May have important impact on society  Example: a photo taken during 2013 Iraq war

What others have done in this area?  Many ways can be used, such as  Examine the use of lens footprints left on the images  Using Camera Response Normality and Consistency  Etc.

The approach I intend to take  Detect digital image forgeries using CFA demosaicking method  “Colour Filter Array"  Photosensors have no wavelength specicity  So filter RGB onto array of photosensors  e.g. Bayer filter

Potential Methods  Identifying the statistical changes  Designing techniques for estimating these changes  According to different types of tampering Re-sampled Images Manipulated Color Filter Array (CFA) Interpolated Images. Double JPEG Compression Duplicated Image Regions Inconsistent Noise Patterns

Time arrangement Gantt chart for project time schedule

Software involved in this project  Main software used  Visualize the ideas in my project

Conclusion  Image differentiation  Help detect fake images when human inspection fails  Very fun and worth doing project  Logically following 5 different tempering image types