3 ms·

Damn you seem to know quite a bit about this. That's an interesting way to map the problem domain. You hit it on the nail from my perspective because the author

Damn you seem to know quite a bit about this. That's an interesting way to map the problem domain. You hit it on the nail from my perspective because the author of the linked library is known for his audio plugins (voxengo). So he's definitely coming at it from the perspective of bandwidth and frequencies. Interesting. Just curious if this makes you think of similar things that might be equally interesting to think about (share?) Thanks!

defrost 3y ago
The earliest pre 2000 JPG specification included compression based on FFT and Fourier theory - using long (infinite) additive waveforms to match image features and then knocking off least terms to compress with some sense of "least" loss. Using traditional FFT long waveforms introduced particular kinds of artifacts. The 2000 JPG spec included the use of localised cosine wavelets .. just like trad. FFT (kind of) but scaled from one at origin to zero at a local radius to suppress the echoing artifacts. The notion first (IIRC) appeared in the "infinitely scrollable" and "instantly loading" (at top level .. with infill as time passed) not-JPEG earth scale mapping images used by both LizardTech (DejaVu(?)) and ERMapper (ECW images) in the early 1990s. The "google map style" applications kind of died on the vine for a bit after a series of dragged out patent arguments then came back in modified form. https://en.wikipedia.org/wiki/LizardTech,_Inc._v._Earth_Resource_Mapping,_Inc https://en.wikipedia.org/wiki/LizardTech,_Inc._v._Earth_Reso....
pornel 3y ago
1995 classic about this: http://alvyray.com/Memos/CG/Microsoft/6_pixel.pdf http://alvyray.com/Memos/CG/Microsoft/6_pixel.pdf https://entropymine.com/imageworsener/bicubic/ https://entropymine.com/imageworsener/bicubic/