stage

docs/cwl-workflow/stage-in-out.md

@@ -22,4 +22,37 @@ From the OGC Best Practice for Earth Observation Application Package:
 This translates to:
 
 * Workflow steps that have an output of type `Directory` produce a STAC catalog
-* Plug a **stage-out step** for all workflow outputs of type Directory
+* Plug a **stage-out step** for all workflow outputs of type Directory
+
+### Applying the stage-in/out to the water bodies
+
+The concepts above mapped to the Water Body Detection application are depicted below.
+
+``` mermaid
+graph TB
+subgraph stage-in
+  A[STAC Item] -- STAC Item URL --> AA[Stage-in]
+  AA[Stage-in] -- catalog.json/item.json/assets blue, red,  nir ... --> AB[(local storage)]
+end
+subgraph Process STAC item
+  AB[(storage)] -- Staged STAC Catalog --> B
+  AB[(storage)] -- Staged STAC Catalog --> C
+  AB[(storage)] -- Staged STAC Catalog --> F
+subgraph scatter on bands
+  B["crop(green)"];
+  C["crop(nir)"];
+end
+  B["crop(green)"] -- crop_green.tif --> D[Normalized difference];
+  C["crop(nir)"] -- crop_green.tif --> D[Normalized difference];
+  D -- norm_diff.tif --> E[Otsu threshold]
+end
+  E -- otsu.tif --> F[Create STAC Catalog]
+  F -- "catalog.json/item.json/asset otsu.tif" --> G[(storage)]
+
+subgraph stage-out
+
+  G -- "catalog.json/item.json/asset otsu.tif" --> BB[Stage-out] 
+  BB --> H[(Remote 
+  storage)]
+end
+```