Yes. The default ffmpeg build enables everything, and most distros follow suit. Security conscious web services generally disable a lot of them, but there is no official list on which are considered more secure than others, so every site tends to have its own unique mix.
Which is completely wrong by the way, JPEG-XL quantizes its coefficients after the DCT transform like every other lossy codec. Most codecs have at least some amount of range expansion in their DCT as well, so the values quantized might be greater bit depth than the input data.
I do not understand the connection between the patent concerns in the article and open-source 3D printing. In particular, the patent issues seem to be the case for all non-Chinese 3D printer companies, whether open source or not. I am not sure how sharing your designs makes this worse (I suppose with the original drawings it's a bit easier to write a patent in bad faith - but certainly not necessary). Something like a defensive patent grant might make a lot of sense (see Opus, AV1 etc) but that's also independent of whether the implementation is open source or not.
The AR coefficients described in the paper are what allow basic modeling of the scale of the noise.
> In this case, L = 0 corresponds to the case of modeling Gaussian noise whereas higher values of L may correspond to film grain with larger size of grains.
Almost none of the games pictured are actually "doujin" games - they are commercial publishers.
Also, the reason we don't remember PC-98 is because it was never sold in the US (except for the very unpopular APC-III). It was the most popular computer on Japan from late 80s to early 90s and is well remembered there. Being the most popular PC, there is a huge amount of software for it, including huge amounts of office and productivity software, many genres of games, and plenty of Western ports.
You don't need to store two whole independent images. The high quality image can predict from the low quality image, and the low quality image can be a lower resolution, too. It is less efficient than storing one image, but more efficient than storing two independent images.
Digital video tape formats (e.g. DV, HDV) are an example. Other containers that operate in this mode are TS and Ogg (and optionally, MKV). Any sort of live streaming format generally is, too.
Those were all SPI-alike, or at least run in their SPI mode, including the ones linked. (I also used a Nokia 6100 LCD back in the day, and it was SPI, though with a wider interface option).
This is not a "mirrorless camera sensor", at least how it's meant to be interpreted. While technically mirrorless like all webcams, the sensor is under a quarter of the area of the smallest Sony mirrorless intechangeable-lens cameras.
Interestingly, the smooth bokeh has become a bit popular and is available with Canon "defocus smoothing" lenses (among other older examples). Rather than varying the aperture size over time, these just have a ND filter with the aperture window function coated on (and also a normal iris - the effect works best at the largest aperture setting).