3D DIC deformation measurement system

technique:　Stereo Digital Image Correlation (SDIC)

Introduction

Stereo Digital Image Correlation (SDIC) is a non-contact optical measurement technique used to analyze deformation and strain in materials. It employs a pair of cameras to capture images of an object's surface from different angles. By correlating the images, it determines displacement and deformation fields with high accuracy. SDIC finds applications in various fields like mechanical engineering, civil engineering, and biomechanics, offering valuable insights into material behavior under different conditions. Its non-invasive nature and precise measurements make it a valuable tool for research and quality control in industries.

The example can measure the displacement of speckle pattern on rubber surface

HOW TO USE:

STEP0: module installation

• cv2
• numpy

STEP1: capture checkerboard images (10 more)

• Ternminal cd Stereo-digital-image-correlation-main\Stereo Vision python3 STEP1_GenerateCBImage.py

left camera:　　

　　

right camera:　　

　　

STEP2: camera calibration

STEP3: check image correaltion results (optional)

STEP4: measure the displacement of the surface on rubber