Update README.md

README.md

@@ -133,8 +133,10 @@ and recall with a mAP50 of 0.992.
 | tissue           | 482         | 978       | 0.999     | 0.994  | 0.995 | 0.909    |
 
 ### Visual Examples of Classes
+![Class Examples](class_collage.png)
 
-add later
+the grid above shows representative examples from the training dataset, organized 
+alphabetically by class (left to right, top to bottom), with the final three images showing multi-item detection examples.
 
 ### Key Visualizations