GPU-Accelerated DIC with Discontinuity Enrichment
Argos2D embeds Heaviside-enriched shape functions directly into the correlation, capturing cracks, twins and slip bands.
Strain field magnitude computed on the multi-modal dataset of J.C. Stinville, J.M. Hestroffer, M.A. Charpagne, A.T. Polonsky, M.P. Echlin, C.J. Torbet, V. Valle, K.E. Nygren, M.P. Miller, O. Klaas, A. Loghin, I.J. Beyerlein, T.M. Pollock, Scientific Data 9 (2022) 460.
Heaviside-Enriched Displacement Fields
Standard DIC assumes continuous displacement inside each subset, which smears out discontinuities across several pixels. Argos adds a Heaviside step function to the correlation model, allowing a sharp jump to be identified within each subset.
The subset shape function is augmented with a jump vector and a Heaviside function:
Used in Science Developed by V. Valle and co-workers at Institut PPRIME, Université de Poitiers. Method F. Bourdin et al., Measurements of plastic localization by heaviside-digital image correlation, Acta Materialia 157 (2018) 307–325. DOI Used in J.C. Stinville et al., On the origins of fatigue strength in crystalline metallic materials, Science 377 (2022) 1065–1071. DOI
Interactive Visualization
A full GUI to set up correlations and explore the results.
Dataset from A. Rouwane, D. Texier, J.-N. Périé, J.-E. Dufour, J.C. Stinville et al., Optics and Laser Technology, Vol. 177, 2024. Courtesy of Damien Texier.
Fracture & Discontinuity Analysis
Dedicated post-processing for cracks, twins and slip bands.
The fracture tab exposes the full enrichment output: crack opening displacement (intensity and direction), crack angle α, opening direction β, and a crystallographic decomposition into screw (longitudinal) and edge (transverse) components relative to the crack front.
Dataset from A. Rouwane, D. Texier, J.-N. Périé, J.-E. Dufour, J.C. Stinville et al., Optics and Laser Technology, Vol. 177, 2024. Courtesy of Damien Texier.
Strain Post-Processing
Customizable derivative kernels and built-in criteria.
Compute the full strain tensor (εxx, εyy, εxy) from displacement fields using separable gradient operators.
- Separable gradient kernels — Sobel, Scharr, centered finite differences, or custom
- Custom expressions — built-in math parser for user-defined strain criteria
Dataset from A. Rouwane, D. Texier, J.-N. Périé, J.-E. Dufour, J.C. Stinville et al., Optics and Laser Technology, Vol. 177, 2024. Courtesy of Damien Texier.
Mosaic Stitching & Batch Mode
Large-area analysis from tiled acquisitions.
Assemble multi-tile acquisitions into a seamless mosaic before running DIC.
- Automated grid layout — row/column organization with configurable overlap, handles missing tiles
- Batch mode — process each tile pair independently without stitching, for high-throughput analysis
Dataset from A. Rouwane, D. Texier, J.-N. Périé, J.-E. Dufour, J.C. Stinville et al., Optics and Laser Technology, Vol. 177, 2024. Courtesy of Damien Texier.
Under the Hood
Core engine specifications
Get Argos2D
The full correlation engine: displacement, strain and every correlation parameter.
Download free portable versionEverything in the free edition, plus Heaviside enrichment, the fracture tab and mosaic stitching.
Request a licenseAlready have a key? Unzip the free edition and open Help → About Argos2D → Activate full edition. Argos2D validates your key online, then downloads and installs the full edition.
| Feature | Free | Full |
|---|---|---|
| Correlation engine CUDA-native, multi-GPU, hierarchical and FFT pixel search | included | included |
| Displacement fields Sub-pixel IC-GN, bilinear / bicubic / B-spline interpolation | included | included |
| Strain post-processing Full tensor, selectable gradient kernels, custom strain criteria | included | included |
| Complete parameter set Subset, spacing, search area, NLC filter, ROI and mask, GPU selection | included | included |
| Image series and field export Reference plus any number of deformed images; every field exported to TIFF | included | included |
| Heaviside enrichment Discontinuity captured inside the subset; twinning mode | not included | included |
| Fracture tab Crack opening and direction, crack angle, screw / edge decomposition | not included | included |
| Mosaic stitching Multi-tile assembly, global position optimisation, batch mode | not included | included |
| In-app update notifications Downloading an update requires a license key | not included | included |
System requirements
- Windows 10/11 (64-bit)
- NVIDIA GPU (minimum: Turing generation, e.g. GTX 16xx / RTX 20xx)
Questions, quotes, academic pricing: contact@argos-correlation.com