• 0 Posts
  • 105 Comments
Joined 2 years ago
cake
Cake day: July 22nd, 2023

help-circle

  • Note: not a professional, I’ve just helped a few people with renovations.

    In Europe, usually brick, concrete, or in newer homes interior walls use “fast build bricks”, which are larger and lighter. In not sure, but pretty confident that these are largely gypsum.

    Sometimes larger rooms are partitioned with plates made of cardboard and gypsum - I suspect these are very similar to your drywall. But these are not part of the permanent structure, and new owners will often change or remove them (but honestly they sometimes remove brick walls too, which is fine as long as it’s not a structural wall).

    In my own house, one wall (between kitchen and dining room) is entirely wood. All the rest is brick, finished with plaster. This house was built in the early 80s.


















  • “And while Spectral JPEG XL dramatically reduces file sizes, its lossy approach may pose drawbacks for some scientific applications.”

    This is the part that confuses me. First of all, many applications that need spectral data need it to be as accurate as possible. Lossy compression in that might not be acceptable.

    More interestingly (and I’ll read the actual paper for this): which data will be more compressed? Simply put, JPEG achieves its best compression by keeping the brightness but discarding colour. Which dimension in which spectral space do the researchers think can be more compressed than others? In this case there is no human visual system to base the decision on.