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I've always assumed those scenes in TV shows where they pull up blurry photos / video and "enhance" them 10-fold was just hollywood. Can this actually be done

by cj 7y ago

I've always assumed those scenes in TV shows where they pull up blurry photos / video and "enhance" them 10-fold was just hollywood. Can this actually be done to any degree of usefulness?

s_kilk 7y ago
Correct, if the information simply isn't present no amount of trickery will conjure it up.
- himinlomax 7y ago
  While you are correct for a still image, there is more information in a movie. That could potentially be exploited similar to the way a long exposure can cancel noise. This normally requires a static subject, but some AI technique may be able to normalize the position of the objects so that they are amenable to be averaged.
- bordercases 7y ago
  Or the degree to which entropy gets reduced still isn't sufficient to åfford admissible amounts of certainty on its own.
- SiempreViernes 7y ago
  Well, these days there is plenty of trickery that will conjure up plausible details to put in place of the information that isn't there. It won't be true information though.
  - bordercases 7y ago
    Sometimes enriching possibilities is good enough to break out of an investigative minima but other restrictions prevent you from recapitulating that evidence in your line of thinking. That's why parallel construction is helpful.
jaclaz 7y ago
Not as much as you see on TV, of course, particularly the "zoom in" that you see there, but there are specific enhancers that sometimes do what appear like "miracles". If you want to test one, for "motion blur" (let's say the licence of a car driving away), get this (last freeware version): https://github.com/Y-Vladimir/SmartDeblur/downloads https://github.com/Y-Vladimir/SmartDeblur/downloads And test it on the images here (actual test images from a reknowned Commercial vendor of a suite that is also for videos): https://articles.forensicfocus.com/2014/10/08/can-you-get-that-license-plate/ https://articles.forensicfocus.com/2014/10/08/can-you-get-th...

by cj 7y ago

I've always assumed those scenes in TV shows where they pull up blurry photos / video and "enhance" them 10-fold was just hollywood. Can this actually be done to any degree of usefulness?

s_kilk 7y ago

Correct, if the information simply isn't present no amount of trickery will conjure it up.

himinlomax 7y ago
While you are correct for a still image, there is more information in a movie. That could potentially be exploited similar to the way a long exposure can cancel noise. This normally requires a static subject, but some AI technique may be able to normalize the position of the objects so that they are amenable to be averaged.
bordercases 7y ago
Or the degree to which entropy gets reduced still isn't sufficient to åfford admissible amounts of certainty on its own.
SiempreViernes 7y ago
Well, these days there is plenty of trickery that will conjure up plausible details to put in place of the information that isn't there. It won't be true information though.
- bordercases 7y ago
  Sometimes enriching possibilities is good enough to break out of an investigative minima but other restrictions prevent you from recapitulating that evidence in your line of thinking. That's why parallel construction is helpful.

jaclaz 7y ago

Not as much as you see on TV, of course, particularly the "zoom in" that you see there, but there are specific enhancers that sometimes do what appear like "miracles". If you want to test one, for "motion blur" (let's say the licence of a car driving away), get this (last freeware version): https://github.com/Y-Vladimir/SmartDeblur/downloads https://github.com/Y-Vladimir/SmartDeblur/downloads And test it on the images here (actual test images from a reknowned Commercial vendor of a suite that is also for videos): https://articles.forensicfocus.com/2014/10/08/can-you-get-that-license-plate/ https://articles.forensicfocus.com/2014/10/08/can-you-get-th...