readme: add example surrogate-modeling results figures

.gitattributes

@@ -18,3 +18,5 @@
 *.png binary
 *.jpg binary
 *.jpeg binary
+docs/images/transolver_hohlraum.png filter=lfs diff=lfs merge=lfs -text
+docs/images/transolver_lattice.png filter=lfs diff=lfs merge=lfs -text

README.md

@@ -99,6 +99,22 @@ After extraction you'll have `mesh/lattice/<name>.pmsh/` and
 `mesh/hohlraum/<name>.pmsh/` directories, each loadable with PhysicsNeMo's
 `Mesh` API alongside the matching `<name>.attrs.json` sidecar.
 
+## Example surrogate-modeling results
+
+The figures below are produced by the
+[PhysicsNeMo radiation-transport example](https://github.com/NVIDIA/physicsnemo/tree/main/examples/nuclear_engineering/radiation_transport)
+on one held-out test sample per benchmark. Each panel shows the
+ground-truth final-time scalar flux, the Transolver prediction, and the
+absolute error, sharing the same color scale within a row.
+
+![Lattice: target, prediction, absolute error of final-time flux](docs/images/transolver_lattice.png)
+
+![Hohlraum: target, prediction, absolute error of final-time flux](docs/images/transolver_hohlraum.png)
+
+See the example's `README.md` for the training recipe, inference
+commands, and the QoI / per-region metrics that accompany these
+predictions.
+
 ## Dataset Owner(s):
 NVIDIA Corporation