[game_preservation] Compressed Sensing and game preservation

[István Fábián]

Not really, you will cause artefacts - if it's a sample, bad sound; if graphics, graphics glitches; if code, random behaviour or crashes. If compressed data (which became popular from mid-late 80s) any kind of random behaviour.

You can't restore data that was never meant to be working altered.

Data and code used by software is normally sensitive to changes - you can however try and restore tiny bits of data or code if you have the expertise of:
1, recording system used
2, target platform
3, willing to reverse-engineer the code/data if needed

It does require a serious amount of domain knowledge and a lot of time - it's not even remotely as simple as enhancing audio or video. 
Finding another copy is much more economic.
  ----- Original Message ----- 
  From: Devin Monnens 
  To: IGDA Game Preservation SIG 
  Sent: Sunday, February 21, 2010 10:18 PM
  Subject: [game_preservation] Compressed Sensing and game preservation


  Wired's latest issue ran an article on compressed sensing, or CS, which uses an l1 minimization algorithm to clean up and restore images. The article suggests that CS could be used for restoring music as well (right now, it's used in MRI's). I was curious if anyone thought this might be applicable to data restoration of games or if the data is too random to produce a 'sparse image'. I mean, I can see it for restoring LP and cassette recordings, but not sure about recovering code...

  -- 
  Devin Monnens
  www.deserthat.com

  The sleep of Reason produces monsters.



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