Modifying the images

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Manuel

• May 24, 2016 10:28

Is it worth bumping up the contrast on relatively flat surfaces?
Is it worth lowering down the exposure even if the image is correctly exposed? (ETTR)
Is it worth applying a sharpening algorithm?

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  Wishgranter

  • May 24, 2016 11:20

  Hi Manuel
  It depends purely on the project, sometimes it is advisable, sometimes not...

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  Manuel

  • May 24, 2016 11:32

  Which variables are involved in deciding if its advisable or not? :-)
  
  For example, I've just processed something relatively flat with the images ETTR (in focus and properly framed). Came out noisy.
  I modified the images bumping down the exposure, bumping up the contrast and results are far better. In agisoft images ideally would have to be ETTR, maybe in capturing reality this isnt the case?
  
  Best!

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  Wishgranter

  • May 24, 2016 22:23

  Hi Manuel
  Again, it is about experience - sometimes it can be used, sometimes it does not help too much. In principle of how photogrammetry works, it helps but you need to be cautious about not getting NOISE as a result...

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