3D Reconstruction of Rotating Objects Based on Line Structured-Light Scanning

In order to achieve the 3D reconstruction of objects, a rotation scanning method based on line structured-light is proposed. Firstly, the line laser is installed together with the camera's optical axis in a certain angle, the measured object is fixed on the rotating motion module, the camera is used to photograph the light stripe which is on the surface of the object under the different rotating phase, and the image processing and method extracting the center of light in a circular kernel is used. The light-spots are restored to the 3D point cloud according to the laser plane parameters and the camera's internal and external parameters calibrated before. According to the rotational phase recorded, 3D point cloud is reconstructed around the rotating shaft for 3D relative position. The paper designs a simple device for 3D reconstruction of sphere based on line structured-light scanning, and the accuracy of 3D point cloud recovery algorithm is tested.