Raul Berari, Andrei Tauteanu, Dimitri Fichou, Paul Brie, Mihai Dogariu, Liviu-Daniel Stefan, Mihai Gabriel Constantin, Bogdan Ionescu. Overview of the 2021 ImageCLEFdrawnUI Task: Detection and Recognition of Hand Drawn and Digital Website UIs. In Guglielmo Faggioli, Nicola Ferro 0001, Alexis Joly, Maria Maistro, Florina Piroi, editors, Proceedings of the Working Notes of CLEF 2021 - Conference and Labs of the Evaluation Forum, Bucharest, Romania, September 21st - to - 24th, 2021. Volume 2936 of CEUR Workshop Proceedings, pages 1121-1132, CEUR-WS.org, 2021. [doi]