| Computer vision is a wide range of interdisciplinary disciplines involving image processing,computer,pattern recognition,optics,electronics,and artificial intelligence.Three-dimensional scanning technology as an important branch of computer vision is currently widely used in objects such as three-dimensional measurement.Now common three-dimensional reconstruction technique is based on structured light scanning technology,which requires the use of harmful and expensive laser as a structured light.There are also three-dimensional scanning techniques using a plurality of three-dimensional scanning with the hardware platform to build.It bases on the parallax method and performs a three-dimensional scan of the object.This scanning method requires multiple cameras to obtain parallax,the cost is relatively high.According to the principle of plane mirror imaging,multiple plane mirrors can be used for constructing a disparity map of the camera at different angles,getting multi-angle disparity graphs.Three-dimensional analysis can be carried out in principle.A three-dimensional acquisition system of single-camera based on four-plane mirror has been presented.Research on application of 3D scanning technique in image acquisition,camera calibration,matching algorithm and 3D reconstruction problem.The main research is as follows:First,the imaging path of the system is analyzed and designed,and the relationship between the spatial resolution and the image resolution is analyzed from the imaging schematic.Showing the use of different mirror image acquisition results.Second,an improved stereo matching algorithm,using the vector angle and variable weight,effective solution to the problem of fuzzy matching color image.And compare the SAD algorithm,NSAD algorithm,SSD algorithm,NSSD algorithms,this improved algorithm is superior to the results of these four common algorithm.Finally,the three-dimensional scanning system based on single-camera quadrilateral mirror is used to realize the accurate modeling of the object and reproduces the surface texture and spatial coordinates of the object.Based on the important steps such as image acquisition,single-camera calibration,stereo matching and three-dimensional reconstruction.The experimental results show that the technology is a feasible three-dimensional acquisition technology. |
