Wednesday, 23 November 2011

Multimedia Forensics 2

The digital forensics scope of services has expended to include digital multimedia analysis over the past few years. The cases involving multimedia analysis is increasing. Some of the analysis is tedious. There was an exemplary paper done Bijhold et al. [1] in reviewing the research works in forensic audio and visual evidence. The review had determined a total number of six expertise fields for this type of evidence.

They are as follows.
· Audio analysis.
  Example of this field includes audio enhancement where some of the noise can be removed using 
  dedicated filters.
· Speaker identification.
  The analysis involves voice comparison and one of the notable products in the market is BATVOX.
· Video analysis.
  The video is break into frames for image enhancement. Some videos may need an analysis first to
  improve the visual using special filters and techniques.
· Facial identification.
  From the video and image enhancement, facial comparison can be analyzed and compared for 
  identification. Quintiliano et al. [2] introduced new algorithms called eigeneyes, eigenmouth and
· Photogrammetry and 3D modeling.
· Forensics linguistic.

[1] J.Bijhold, A.Ruifrok, M.Jessen, Z.Geradts, S.Ehrhardt, and I.Alberink. “Forensic audio and visual evidence 2004-2007: A Review,” in 15th INTERPOL Forensic Science Symposium, Lyon, France, October 2007.
[2] P.Quintiliano and A.Rosa. “Face Recognition Applied to Computer Forensics.” The International Journal of FORENSIC COMPUTER SCIENCE, vol. 1, pp. 19-27, 2006.

It is quite interesting to know that our multimedia forensics capabilities in providing services are on par with the rest of the world.