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Sometimes, Pixels Matter

Discussion in 'Talking Pictures' started by Craig20264, May 18, 2020.

  1. Craig20264

    Craig20264 Well-Known Member

    Two photos of Pluto taken 25 years apart. (1994 and 2019)

    EightBitTony and daft_biker like this.
  2. PeteRob

    PeteRob Well-Known Member

    Nice example, I like that. Yes pixels matter. You can always reduce resolution but there is something magic in exploring ever more detail.
    EightBitTony likes this.
  3. Stephen Rundle

    Stephen Rundle In the Stop Bath

    Come on, one was Hubble and the other a FLY BY of the planet no comparison
    RogerMac likes this.
  4. EightBitTony

    EightBitTony Well-Known Member

    I'm reasonably confident Craig knows that.
  5. Stephen Rundle

    Stephen Rundle In the Stop Bath

    But then it isn't comparing like pixels have 0 to do with it

    Perhaps better would be

    "Look how times have changed"
  6. Craig20264

    Craig20264 Well-Known Member

    I'll message a moderator to see about getting the title changed. I apologise profusely to anyone I may have offended.
    Like innit.
    EightBitTony and dream_police like this.
  7. PeteRob

    PeteRob Well-Known Member

    Don’t worry about it. It might be apples vs pears but interesting nonetheless the difference time has made to our capability.
    RogerMac likes this.
  8. dream_police

    dream_police Well-Known Member

    I don't think Craig is that worried Pete. I think he may have been taking the mick about getting the title changed!
    EightBitTony and Craig20264 like this.
  9. geoff_piltz

    geoff_piltz Well-Known Member

    I've often wondered - How may pixels does it take to make a recognizable face, I mean sufficiently recognizable to identify the person? Does anyone know?

  10. Chester AP

    Chester AP Well-Known Member

    The comparison would me more meaningful if both shots were taken from the same place with the same lens, so that the difference was only down to the sensor resolution.

    At least the 'fly by' image is still beyond the wealth of all the 'pay and display' APOY entrants (I received my latest AP today).
  11. EightBitTony

    EightBitTony Well-Known Member

    In summary, the required pixel resolution is:

    1. Identification of a person that you know – 80 pixels/ft.
    2. Forensic identification of a person you don’t know – 160 pixels/ft.
    3. Best identification when there are poor conditions – 180 pixels/ft.


    Marketing blurb so take it at face value (hahahahahah see what I did there)
    Zou and spinno like this.
  12. PeteRob

    PeteRob Well-Known Member

    Amazing. I hadn’t realised that you could identify people by their feet alone.
    SqueamishOssifrage likes this.
  13. spinno

    spinno Well-Known Member

    Footprints/fingerprints, they'll get you...
  14. Andrew Flannigan

    Andrew Flannigan Well-Known Member

  15. Andrew Flannigan

    Andrew Flannigan Well-Known Member

    Ears too, allegedly... ;)

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