This paper presents a shot boundary detection algorithm using morphological opening with structuring elements consistent to the acute level of a shot. By this way, the difficulty on indistinctness of gradual transitions is solved. The algorithm is applied to soccer video and the resulting shots are further classified as long, medium, or close-up/others shots. The classification algorithm is based on grass pixel ratio which is calculated with motion and color features without the need of pre-training or updating. Both shot detection and classification algorithms are tested on various types of videos and soccer video with excellent results.
Far East Journal of Experimental and Theoretical Artificial Intelligence 3(2), pp.81-100