Mass Measurement Method of Bulk Materials Based on Reverse Engineering

This paper proposes a reverse engineering-based method for mass measurement of bulk materials with an irregular shape. Through repeated measurements, the multi-view point cloud data of a material stack surface can be obtained and the 3D surface model can be reconstructed after point cloud data registration. The volume of the stack can be calculated through image acquisition, data analysis and 3D reconstruction. After measuring the density of a material stack sample, the mass can be calculated through a combination of volume and density. An experiment using a rice stack shows that the measuring error of the system is lower than one percent. It is suitable for the mass measurement of grain stacks and other material stacks as well.