Temporal super resalution needs to accumulate data from multiple frames to work. Essentially, each frame renders only a subset of pixels, but crucially each fra

Temporal super resalution needs to accumulate data from multiple frames to work. Essentially, each frame renders only a subset of pixels, but crucially each frame renders a different subset, so you can combine information over a few frames to compute what should be at each pixel. There're some complications to account for things moving around the scene, but that's the basic idea. So there's no way the technique or similar techniques can be used to upscale a single photo in isolation. However, conceptually it's similar to capturing a long exposure image of dark scene, like the night sky, to get a low-noise, brighter photo. Temporal super resolution accumulates information from rendered pixels over time, while a long exposure photo accumulates information from captured photons over time.