This is open source.
J. F. Sánchez García, P. Bibiloni, and A. Oliver Tomàs, “Automatic Crowd Counting on the Beaches of the Balearic Islands Using Convolutional Neural Networks,” Frontiers in Artificial Intelligence and Applications. IOS Press, Sept. 22, 2025. doi: 10.3233/faia250604.
Based on the Final Degree Project of Juan Francisco Sánchez García “Monitoreo automático de la ocupación de las playas de las Islas Baleares”, defended at Universitat de les Illes Balears in the 2023-24 academic year.