Smartphone-Based Single-Camera Stereo-Vision System

Abstract

Stereo-digital image correlation technique using two synchronized industrial-grade cameras is extensively used for full-field 3D shape, displacement and deformation measurements. However, its use in resource-limited institutions and field-settings is inhibited by the need for relatively expensive, bulky and complicated experimental set-ups. To mitigate this problem, we established a cost-effective and ultra-portable smartphone-based stereo-digital image correlation system, which only uses a ubiquitous smartphone and an optical attachment. This optical attachment is composed of four planar mirrors and a 3D-printed mirror support, and can split the incoming scene into two sub-images, simulating a stereovision system using two virtual smartphones.