3D modeling of small industrial parts based on the structured illumination

As the developing of the computer-science and the photogrammetry, the skills and theories are used to all kinds of the industrial application. Because of the troubles and the difficulties, this paper proposes a new method for 3D measuring the small industrial parts on the principle of close range photogrammetry. According to the measurement of the control ground, the objective industrial parts are relative to be small. When the projectors and the cameras are respectively on calibration first, the projectors and cameras structure is very similar or same with binocular vision systems based on the theory of 3-D reconstructing. These 3-D spacious featured point coordinates could be calculated by the famous theory of space forward intersections. Applying the whole adjustment methods, the 3-D coordinates of the space points which are projected on the whole smooth surfaces of these objective small industry parts could be computed accurately and entirely. Its precision of 3-D coordinates is reached to ±0.1mm and it can be satisfied with the request of the practical applications and the close-range photogrammetry. As little effects by the space factors or the time factors, this 3-D model of their small industry parts should be practical and flexible. This 3-D model method of the small industry parts provided on this thesis is proved effective and correct on the basis of paper´s experimental data.