What's a new scientific concept or technological innovation that really makes you feel like we're living in the future? - eviltoast
  • Fallenwout@lemmy.world
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    1 year ago

    It is not that complicated, to make a simple example with strings: AAAABBBABABAB takes up 13 spaces, but write (compress) it like 4A3B3AB take up 6 spaces compressing it more than 50%.

    Now double it like AAAABBBABABABAAAABBBABABAB with 26 spaces and write it as 2(4A3B3AB) with 9 spaces it takes only 30% of the space.

    Compression algorithms just look for those repetitive spaces.

    Takes those letters and imagine them being colored pixels of a picture to compress a picture

    • quinkin@lemmy.world
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      1 year ago

      Once you get into audio, images and video it revolves a lot around converting temporal and/or positional data into the frequency domain rather than simple token replacement.

    • MrFunnyMoustache@lemmy.ml
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      1 year ago

      Wait, isn’t your first example goes from 13 spaces binary to a 6 spaces of base 12 (base 10 + the two values A or B).

      That would make the “compressed” result be 110111010111011101110011 which is larger than the original message when both are in binary…

        • MrFunnyMoustache@lemmy.ml
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          1 year ago

          Fair enough. The general idea is correct, I just found that example rather jarring… It is generally more difficult to compress an already small amount of data anyway.