Research on point-cloud collection and 3D model reconstruction

Point-cloud collection is used to collect 3D surface features from the object. 3D reconstruction can form a visual 3D model based on point- cloud. They are the important parts of 3D surface measurement. 3D surface measurement can effectively help enterprises shorten the design cycle, improve product quality, save labor costs, and improve the competitiveness of enterprises. Optical image measurement is a branch of 3D surface measurement. Because optical image measurement has the advantages of non-contact, high speed, high degree of automation and good flexibility, it has been researched and applied widely. Image processing and calibration technology are often used in optical image measurement. Image processing can extract valuable information from images, and calibration technology is necessary for mathematical model. Multi-line structured light has been widely used in the measurement.