A. Łuczak, S. Maćkowiak, “A method for processing wide angle images with barrel distortion and a surveillance system”, Patent office: USPTO, Status: granted, Application number: US 13964114, Filling date: 12.08.2013, Publication number: US 2014/0043477A1, Publication date: 13.02.2014, Patent number: US 9413927, Date of Patent: 9.08.2016,