The two winners will be invited to describe their solutions during the 21st International Conference on Image Analysis and Processing (ICIAP 2021). Authors of top performers, innovative and promising solutions will be invited to submit a scientific paper describing their solution to a special issue in a top-ranked international journal. For this aim, late submissions will be accepted, as the data and the competition website will be kept available after the challenge deadline. The aim is to make the competition a standardised common experimental protocol, providing researchers with a large number of samples collected in a well-known environment, with a set of scores for competitors’ approaches already available.