Tou Jing YiChen Chuan Toh2024-12-262024-12-2620129783642284922978364228493910.1007/978-3-642-28493-9_54https://dspace-cris.utar.edu.my/handle/123456789/8358Optical Flow-Based Bird Tracking and Counting for Congregating Flocksbook-chapter