Skip to Main content Skip to Navigation
Conference papers

How noise propagates from camera sensor to displacement and strain maps obtained with the grid method

Michel Grediac 1 Frédéric Sur 2
2 MAGRIT - Visual Augmentation of Complex Environments
Inria Nancy - Grand Est, LORIA - ALGO - Department of Algorithms, Computation, Image and Geometry
Abstract : It is shown that the effect of sensor noise in displacement and strain maps obtained with the grid method can be accurately predicted. Analytical expressions linking resolution and spatial resolution in these maps on the one hand, and standard deviation of sensor noise on the other hand are first given. These expressions are then experimentally evidenced. It is shown that a grid image preprocessing step must be performed to reach this goal in order to account for heteroscedasticity of sensor noise and micro-vibrations that corrupt grid images.
Complete list of metadata

https://hal.inria.fr/hal-01022373
Contributor : Frédéric Sur <>
Submitted on : Thursday, July 10, 2014 - 12:18:46 PM
Last modification on : Tuesday, May 18, 2021 - 3:44:10 PM

Identifiers

  • HAL Id : hal-01022373, version 1

Citation

Michel Grediac, Frédéric Sur. How noise propagates from camera sensor to displacement and strain maps obtained with the grid method. ICEM16 - 16th International Conference on Experimental Mechanics, Jul 2014, Cambridge, United Kingdom. ⟨hal-01022373⟩

Share

Metrics

Record views

377