Realization Of 3D Measurement System Based On Light Field Technology

In recent years,light field imaging technology with its first camera after focusing,variable depth of field,variable viewpoints and other new imaging features,has caused widespread concern by the academic community.Compared with the traditional camera imaging technology can only record two-dimensional information,and the shortcomings of the lack of information on the depth of the object perception,the light field imaging technology records the direction of light transmission by its light field information,it contains the object of the three-dimensional information.So,three-dimensional measurements can be made using light field techniques.In this paper,a new three-dimensional measurement method of light field is proposed,which combines the advantages of light field technology and active light source.This method overcomes the shortcomings of the current imaging field pixel,greatly reduces the complexity of image processing,The construction of the information collection system is reconstructed to the three-dimensional depth of the target object.The main contents include:(1)Build image data acquisition system,the light field imaging system and active light source combined to collect and record the depth of the measured panel light field information;(2)Calibration of the parameters of the optical field imaging system,access to light field imaging system model parameters;(3)Processing the acquired light field data to obtain the synthesized picture and the re-focus picture with different focal length;(4)Preprocess the image,and extract the center of the sampling point of the active light by the Hough change of binarization,edge detection and image dots.(5)According to the variance distribution curve of the window pixels in the center of the sampling bright spot,the image distance of the bright spot is solved,the depth is solved by combining the Gaussian imaging formula,and finally the depth information is reconstructed in the three-dimensional coordinate system.The experimental results show the feasibility and effectiveness of the proposed method.