1. The document discusses various methods for detecting fires in videos. It reviews approaches that analyze properties of fire like color, shape, movement, and spatio-temporal features.
2. A commonly used method is a multiexpert system that uses color, shape, and movement evaluation, but it does not identify smoke which can provide early detection.
3. Integrating smoke analysis could allow for earlier fire identification. The study refers to different fire detection methods and prefers combining smoke detection for more timely fire identification.