What is 3D/2D Articulated Model

This chapter presents a survey of methods used for tracking in video sequence. We mainly focus this survey on tracking persons. We introduce three main approaches. First, we present the graph based tracking approach where the sequence of tracked objects are embodied in a graph structure. Then we introduce the features (extracted from the images) based tracking and matching with a model. We survey the main primitives and emphasize the approaches based on 2D and 3D body model. We present the particular case of tracking in a network of cameras with the particle filtering method. Finally, As a generalization, we focus on the single vs. stereo approaches.