Fig. 14From: Robust head pose estimation based on key frames for human-machine interactionResults of ICU sequences using (blue) Fanelli, (red) Li’s simple approach, (green) Li’s proposal including of nose detection heuristic, and (purple) our descriptor-based method without and with optimization (cyan). The first row shows the mean angular error, and the second the missed detection. For clarity, each graphic only shows two sequencesBack to article page