Multi-camera based full-field 3D displacement measurement using digital image correlation

摘要

In this work, a multi speckle matching method for full-field 3D measurement using multi-camera is proposed. The rotation matrix and translation matrix of different camera coordinate were calculated using multi speckle matching method. The measurement points of all cameras were converted to a same coordinate system and the 3D shape is construct. The full-field displacement is obtained by subtracting the coordinates before and after translation. The measurement of aluminum plate using multi-camera system is conducted. The results show that the converting error of displacement field is less than 0.1mm.