Take a series of noisy images, whether from photons, dust, compression, or all. What is that detail, obscured, for which we'd see something of truth? Take the median of their pixels and something of their detail is revealed.
30 images, magick convert <sources> -evaluate-sequence median <destination>, cropped 2x upscale
The noisy example is the first in the sequence. The sequence further suffers from slight camera and object movement, which contributes a fuzziness while mitigating aligned compression artifacts.
Her lashes and the hair of her brow are preserved, the line of her lips, a blemish above her left brow and the blue blood vessel running down.
Her finger tips are in perfect repose.
A delicate pattern carries through the bedsheet.
Small hairs cling to her hccUcdclpcg O leg, the pattern of the bedsheet resolves even through blood and shadow.