3D shape acquisition technology of object with largedepth based on integral imaging

In order to meet the demand for 3D shape acquisition of large-depth objects in modern industry and solve the problem of small depth in conventional structured light 3D shape measurement, a new 3D shape acquisition technology of object with large depth based on integral imaging is proposed by the array multi-viewpoint acquisition technique. According to integral imaging principle, the relationship between corresponding image points and object points is analyzed, then relationships between max depth and integrated imaging optical acquisition system parameters are obtained. On this basis, an integral imaging 3D shape acquisition system is built with scanning cameras and motorized platform. Furthermore, 3D shapes of large-depth object, constituted by 2 objects relatively independent with depth of 600 mm to 3 600 mm, are captured by the proposed system.Optical experiment results show that this proposed integral imaging large-depth-object 3D shape acquisition technology can capture 3D shape of 3D object with depth up to 3 600 mm at one time, which can offer technical support for 3D shape acquisition of objects with large depth.