Optical flow and deep learning-based anomaly detection for hajj pilgrimage crowd monitoring. - Roman Bhuiyan; Junaidi Abdullah; Noramiza Hashim; Fahmid Al Farid; Wan Noorshahida Mohd Isa; Jia Uddin; Hezerul Abdul Karim; Sarina Mansor; Duraisamy Balaganesh; Md. Tanjil Sarker (Signal Image Video Process., 2025)