Figure 8

3D evaluation of landmark tracking using augmented AAMs. The evaluation was based on one quail dataset with known camera calibration. 3D landmark positions were obtained by triangulating 2D tracking results. In (a), the 3D Euclidean point-to-point errors between triangulated tracked and triangulated ground-truth landmarks are shown as Tukey boxplots grouped by landmark group. The quail has a body length of approximately 200 mm. Based on these results, a median error of 5 mm can be seen as a rough upper bound for future methods which perform pure 3D tracking. In (b), reprojected landmarks are shown for a visible light camera to visualize the accuracy.