Quantitative Schlieren imaging based on fringe projectionPavel Psota, Marek Stašík, Jan Kredba, Vít Lédl, Darina Jašíková, Michal Kotek and Václav KopeckýEPJ Web Conf., 264 (2022) 01034DOI: https://doi.org/10.1051/epjconf/202226401034