Large-scale three-dimensional measurement based on LED marker tracking

This paper presents a three-dimensional (3-D) measurement method of large-scale objects by integrating a 3-D scanner and a stereo tracker. To measure a large-scale object, some high-brightness light-emitting diode (LED) lights are rigidly connected to the 3-D scanner. During measurement, the stereo tracker remains stationary, and the 3-D scanner is moved to measure partial sections of a large object. Meanwhile, the LED lights are tracked by the stereo tracker to compute the poses of the 3-D scanner for aligning partial sections. The performance and effectiveness are evaluated by experiments.