Terraform

Terrafrom QGIS plugin contains implementation of 11 popular topographic correction algorithms. Besides it the plugin provides an ability to evaluate the results of the correction algorithms by several methods: correlation between luminance and image digital numbers, rose-diagrams analysis and multi-criteria statistical analysis. Also, the plugin is capable of ranking topographic correction algorithms according to their applicability to a particular image using multi-criteria score based on the statistical metrics. Terraform plugin has processing provider, so you can easily combine the algorithm described above with other processing algorithms.

Implemented topographic correction methods

1. Cosine-T
2. Cosine-C
3. C-correction
4. SCS
5. SCS + C
6. Minnaert
7. Minnaert-SCS
8. PBM
9. VECA
10. Teillet regression
11. Pixel-based C correction