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One thing I recommend people to do is study compression algorithms like Jpeg. I find the relationship between compression algos & cognitive science very inter

by max_ 2y ago

One thing I recommend people to do is study compression algorithms like Jpeg. I find the relationship between compression algos & cognitive science very interesting.

drunkspider 2y ago
What's the relationship between compression algorithms and cognitive science?
- max_ 2y ago
  There are many other resources. But this is an example https://archive.is/KShWY#9 https://archive.is/KShWY#9
- tedd4u 2y ago
  "Lossless" compression is based on information that can be discarded without negative consequences because it cannot be perceived by humans. The data is real and there, you just can't see it or hear it. If you can quantify what information humans can't perceive, you can discard it, leaving less data and possibly more amenable data for a subsequent lossless compression phase. MP3, JPEG, MPEG all benefit from this understanding of the human perceptual system.
  - omneity 2y ago
    You're talking about lossy compression. Specifically perceptual lossy compression[0]. Lossless compression is entirely reversible. Nothing is lost and nothing is discarded, perceived or not, like zip. 0: https://arxiv.org/abs/2106.02782 https://arxiv.org/abs/2106.02782
  - hnlmorg 2y ago
    You have it backwards there. You’re describing lossy compression. Lossless is formats like Flac and zip. Lossless compression basically stores the same data in more efficient (from a file size perspective) states rather than discarding stuff that isn’t perceived. The clue is in the name of the term: “lossy” means you lose data. “Lossless” means you don’t lose data. So if a zip file was lossy, you’d never be able to decompress it. Whereas you cannot restore data you’ve lost from an MP3.
- nayuki 2y ago
  Perhaps https://en.wikipedia.org/wiki/Human_visual_system_model https://en.wikipedia.org/wiki/Human_visual_system_model , https://en.wikipedia.org/wiki/Psychoacoustics https://en.wikipedia.org/wiki/Psychoacoustics
- VMG 2y ago
  information processing

by max_ 2y ago

One thing I recommend people to do is study compression algorithms like Jpeg. I find the relationship between compression algos & cognitive science very interesting.

drunkspider 2y ago

What's the relationship between compression algorithms and cognitive science?

max_ 2y ago
There are many other resources. But this is an example https://archive.is/KShWY#9 https://archive.is/KShWY#9
tedd4u 2y ago
"Lossless" compression is based on information that can be discarded without negative consequences because it cannot be perceived by humans. The data is real and there, you just can't see it or hear it. If you can quantify what information humans can't perceive, you can discard it, leaving less data and possibly more amenable data for a subsequent lossless compression phase. MP3, JPEG, MPEG all benefit from this understanding of the human perceptual system.
- omneity 2y ago
  You're talking about lossy compression. Specifically perceptual lossy compression[0]. Lossless compression is entirely reversible. Nothing is lost and nothing is discarded, perceived or not, like zip. 0: https://arxiv.org/abs/2106.02782 https://arxiv.org/abs/2106.02782
- hnlmorg 2y ago
  You have it backwards there. You’re describing lossy compression. Lossless is formats like Flac and zip. Lossless compression basically stores the same data in more efficient (from a file size perspective) states rather than discarding stuff that isn’t perceived. The clue is in the name of the term: “lossy” means you lose data. “Lossless” means you don’t lose data. So if a zip file was lossy, you’d never be able to decompress it. Whereas you cannot restore data you’ve lost from an MP3.
nayuki 2y ago
Perhaps https://en.wikipedia.org/wiki/Human_visual_system_model https://en.wikipedia.org/wiki/Human_visual_system_model , https://en.wikipedia.org/wiki/Psychoacoustics https://en.wikipedia.org/wiki/Psychoacoustics
VMG 2y ago
information processing