Amazing DxO ONE SuperRAW noise reduction: How it works, and how to roll your own version

One of the most interesting features of DxO’s new camera (#dxoone) is the new SuperRAW image format it supports. SuperRAW is a compound image format, with each image file containing four RAW images taken in quick succession. When the ONE is set to capture images in SuperRAW, the four individual RAW images are shot and stored in a single, proprietary, image file (with a .DXO extension). When processed by DxO’s own OpticsPro or FilmPack software, spatial and temporal noise reduction are applied to the four images, with the resulting output image having lower noise – and better overall image quality -- than any of the four individual captures.