Calibration of the 3D Digital Camera "FinePix REAL 3D W1"

The 3D digital camera FinePix REAL 3D W1, which was designed to take a pair of stereo images for stereo viewing, was released by FUJIFILM Cooperation in August 2009. The aim of our study is to evaluate camera calibration methods for measuring dimensions of an object on a sub-meter scale by using a pair of stereo images acquired by the camera without any controls. Three camera calibration methods were evaluated by estimation errors of length of line segments measured without any controls. The experiment results indicate that the best calibration method for the camera would be the method that ordinary camera calibration is first executed for each imaging unit in order to estimate its image distortion model, and then alignment between two imaging units is estimated by using two sets of the exterior orientation parameters of both imaging units obtained in the ordinary camera calibration executed previously.