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Welcome to the Forensic Multimedia Analysis blog (formerly the Forensic Photoshop blog). With the latest developments in the analysis of m...

Monday, August 19, 2019

Welcome

Welcome to the Forensic Multimedia Analysis blog (formerly the Forensic Photoshop blog).

With the latest developments in the analysis of multimedia (video, audio, images, and metadata), we move the discussion beyond a single piece of software to include (in no particular order) processing and analysis fundamentals, court cases, upcoming training offerings, product reviews, current research, standards and practices, industry events and trends, and much more.

Digital / multimedia forensic analysis covers the domains of:

  • Authentication
  • Photogrammetry
  • Photographic Comparison
  • Photographic Content Analysis

Clarification, enhancement, and restoration are processes that can occur within the domains, but aren't domains in and of themselves.

We use the term digital / multimedia forensic analysis, as opposed to forensic video analysis or forensic audio analysis as we acknowledge that modern multimedia evidence potentially contains audio, images, video, as well as metadata. Thus, we need to be able to process and analyze everything that's found in the evidence files that we receive.

It's also important to define "forensic science." For this, I'll refer to "A Framework to Harmonize Forensic Science Practices and Digital/Multimedia Evidence." OSAC Task Group on Digital/Multimedia Science. 2017 (link): "Forensic science is the systematic and coherent study of traces to address questions of authentication, identification, classification, reconstruction, and evaluation for a legal context."

What is a trace? "A trace is any modification, subsequently observable, resulting from an event." You walk within the view of a CCTV system, you leave a trace of your presence within that system. You send a text, you leave a trace on your phone.

Within this framework, and wherever possible, we'll frame our discussion around standards and science. Validity, reliability, and reproducibility will be our goals ... not to present something unique and proprietary that only we can do here, but to illustrate the science behind the tools and techniques so that you can do it too.

I hope you enjoy your time here.

Jim Hoerricks, PhD AVFA
Las Vegas, NV USA
(about me) (contact me)

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