Does anyone know which algorithm they use for super resolution in the camera app? I know they're using RAISR [0] for zoom in the previous version, seems like th

Does anyone know which algorithm they use for super resolution in the camera app? I know they're using RAISR [0] for zoom in the previous version, seems like they have a new method now with multi image super resolution. I doubt it's anywhere near as good as a second camera with a different lens, so I don't understand why they won't include a second camera in the back like every other modern phone. [0] https://arxiv.org/abs/1606.01299 https://arxiv.org/abs/1606.01299