Figure 3
From: Automatic identification of inertial sensor placement on human body segments during walking
Decision trees for left and right upper arm and upper leg identification (step 2). To identify left and right upper arms, from both upper arm sensors the correlation of the acceleration in z direction with the sternum sensor orientation about the x-axis was used (left). For the upper legs the orientation of the pelvis sensor was used (right). For these segments, all sensors were identified correctly (100% accuracy).