| Summary: | 碩士 === 國立中央大學 === 光電科學研究所 === 99 === This paper describes a three-dimensional scanning system. It can scan the objects three-dimensional shape in a short time, and then through the build system, the object data can compose the original three-dimensional objects. This three-dimensional scanning system is composed by one or more sets linear diode laser light and video capture devices. The linear laser light is analysed by calculating the centroid in this experiment, the object will be a multi-point interpretation, then to built the original object. We conducted a series of experiments broadly, to assess performance and scanning speed of the three-dimensional scanning system.
Experimental design into two groups: error correction and compared to resolution. Error correction, since distance will change during the observation, the image will deform by nonlinear relationship. It will distort on observation, so it need to be corrected. Compared to resolution, different resolutions will result in different scanning speed, and the resolution would affect the graphical accuracy too, so it need make a choice. Low-resolution, it will capture lesser points, so the time of operation is short; high-resolution, it will capture more points, it will need long time to operate.
In the experiment, only from one direction to scan, so we only scan one side of the object. If it scans spherical objects, the object will distort because the retrieve information is lack. If it changes the use of multiple lasers, it can scan from different directions at one time, the distortions can significantly decrease.
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