Recently I have been reading a lot of papers about Computer Vison, more specifically trackers. There are various criteria taken into consideration to evaluate the robustness of a tracker; like how well it can handle illumination variation, occlusion, fast motion etc. I understand pretty much all of the parameters except the two mentioned in the title. Could some explain me the each of them, and their differences? Thank you.
In-Plane Rotation - the target rotates in the image plane. Out-of-Plane Rotation - the target rotates out of the image plane.1
[1]Y. Wu, J. Lim, and M.-H. Yang, “Online object tracking: A benchmark,” in CVPR, 2013