the.com/scaling algorithm
the math that decides how many pixels stretch into your fullscreen mistake.
means a method for resizing an image or dataset by calculating new pixel or data values from the original, trading off speed, sharpness, and fidelity.
from rooted in signal processing and interpolation theory, formalized as computer graphics needed to resize bitmaps without redrawing them from scratch in the 1970s-80s.
nearest neighborfastest, blockiest, just copies the closest pixel
bicubicuses 16 neighboring pixels per point, smoother edges
lanczosnamed after mathematician cornelius lanczos, sharpens while resizing
ai upscalingnow predicts missing detail instead of just guessing
for instance
photoshop bicubic — default resize method since photoshop 3, 1994
nvidia dlss — uses ai scaling to fake 4k from lower renders, 2018
waifu2x — neural network upscaler built in 2015 for anime art
youtube thumbnails — nearest neighbor artifacts visible on tiny preview images