Implementation Of 3D Laser Scanning And Printing Based On Delaunay Triangulation

• Main Authors: LIANG,JIN-WEI, 梁晋瑋
• Other Authors: Liu Shih-Mim
• Format: Others
• Language: zh-TW
• Published: 2019
• Online Access: http://ndltd.ncl.edu.tw/handle/7d3qn6

碩士 === 國立聯合大學 === 電機工程學系碩士班 === 107 === 3D laser scanning and 3D printers are a very prosperous industry in recent years. There are a lot of related products in daily life. Not only can you print a model created by a laser scanning, but you can also design your own model and print it out. This paper will focus on how to use laser light to cast on the object to be measured, and use the camera to capture the laser light. By the rotation of the stepper motor, the contour of each angle of the object can be captured and recorded in points, and finally formed a point cloud. Then, using the Delaunay triangulation method, each point in the point cloud is connected to form a complete mesh for modeling. Finally, the scanned model is converted into an STL file that the 3D printer can support, and the complete 3D scanning system from 3D scanning to 3D printing is completed. This paper uses Windows as the working platform, equipped with Python programming language and OpenCV library, to calculate the physical size of the object to be measured by the correlated functions. Then Delaunay triangulation is employed to establish the physical model of the object. Because the most common 3D printer printing model format on the market is the STL file, and the format of the STL file is a combination of a large number of triangles, therefore, the model created by the Delaunay triangulation can be directly converted into the STL file, and sent to a 3D printer for printing. Keyword：Laser scanning, 3D printer, Python, OpenCV, Delaunay triangulation,STL file