Development of 3D laser scanner for measuring uniform and dense 3D shapes of static objects in dynamic environment.

The authors aim at the development of a 3D laser scanner that can measure uniform and dense 3D shape of static objects in dynamic environment. The 3D scanner was composed of a 2D Laser Range Finder (LRF) and Pan-Tilt base. 3D shape is measured by rotating 2D LRF that is tilted around the two axes. The laser point trajectory shows cross scan. Use of cross scan achieved the wide view angular and the uniform 3D scan. The proposed 3D scanner can adjust the measurement area and the density of 3D point clouds by changing the angle and angular velocity of the pan-tilt mechanism. The 3D scanner can decrease 3D measurement time. In addition, this 3D scanner measures same area twice during one 3D scan. Comparing these two measurement distances, the moving object can be detected.