2005/11/14 by François Hild, Stéphane Roux, Hild, François +1
Computer Science · Engineering · #Classical Physics (physics.class-ph) #FOS: Physical sciences #Image Processing Techniques and Applications #Image and Object Detection Techniques #Optical measurement and interference techniques
paper · doi:10.48550/arxiv.physics/0511122
openalex publication_date 2005/11/14 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The current development of digital image correlation, whose displacement uncertainty is well below the pixel value, enables one to better characterise the behaviour of materials and the response of structures to external loads. A general presentation of the extraction of displacement fields from the knowledge of pictures taken at different instants of an experiment is given. Different strategies can be followed to achieve a sub-pixel uncertainty. From these measurements, new identification procedures are devised making use of full-field measures. A priori or a posteriori routes can be followed. They are illustrated on the analysis of a Brazilian test.