Resolving Gas Bubbles Ascending in Liquid Metal from Low-SNR Neutron Radiography Images

We demonstrate a new image processing methodology for resolving gas bubbles travelling through liquid metal from dynamic neutron radiography images with intrinsically low signal-to-noise ratio. Image pre-processing, denoising and bubble segmentation are described in detail, practical recommendations. Experimental validation is presented - stationary moving reference bodies neutron-transparent cavities radiographed imaging conditions similar to the cases metal. The methods applied our experimental data previous recent campaigns, performance of proposed this paper compared against previously developed methods. Significant improvements observed as well capacity reliably extract physically meaningful information measurements performed under highly adverse conditions. showcased solution separate elements thereof readily extendable beyond present application, have been made open-source.