Reference paper:
Qiang Li, Robert Haschke, Helge Ritter, "Learning a Tool’s Homogeneous Transformation by Tactile-based Interaction", IEEE Humanoids2016, 15-17, Nov,2016, Cancun, Mexico
Qiang Li, Andre Ueckermann, Robert Haschke, and Helge Ritter, "Estimating an articulated tool's kinematics via visuo-tactile based robotic interactive manipulation", IEEE IROS2018