| dc.description.abstract | The purpose of this research is to develop the ＂automated high dynamic range 3D point cloud measurement technology＂ for measuring the workpiece to be measured, and establishing 3D point cloud data, and finally evaluate the results through the German VDI standard, and observe that the automatic high dynamic range is added. Modeling effectiveness of scope techniques. Since the 3D point cloud technology is converted from 2D image information to 3D point cloud information, there are special requirements on image quality and it is easily affected by the environment and light sources. This research solves the overexposure problem through the proposed automated high dynamic range technology (HDR) and eliminates human factors, combined with structured light and stereo vision technology (SV), can reconstruct Three-dimensional point cloud data of the object to be measured.
The principle of HDR is to use image synthesis methods with different exposure times and apply this to the captured images. Since the use of HDR requires multiple exposure time parameters, and the choice of exposure time parameters is particularly important. Therefore, this research adds an automated method to calculate the required exposure time through a program, and completely eliminates manual control factors. . This research solves the problem of undetectable measurement due to overexposure and eliminates human operation factors. Aiming at the result of using automated high dynamic range technology, the German standard VDI 2634 is evaluated through the German standard VDI 2634 to observe the modeling effect after solving the problem. In the evaluation experiment, a total of three sets of experiments are performed, and each set of experiments will be measured five times. In the case of a working distance of 400 mm, a focal length of 16 mm, a depth of field of 150 mm, and a field of view of 360 mm × 260 mm, the XYZ axis resolution can reach 0.1 mm, and the accuracy can reach -0.15 mm ~ 0.1 mm. Up to 0.08 mm. | en_US |