Update README.md

README.md

@@ -136,7 +136,32 @@ and recall with a mAP50 of 0.992.
 ![Class Examples](class_collage.png)
 
 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.
+alphabetically by class (left to right, top to bottom, following the order
+shown in the per-class breakdown), with the final three images showing multi-item/class detection examples.
+Because each class was reduced into a single category, each class has multiple different examples
+and varies from one another.
+
+
+| Position       | Class             | Features                                                   |
+| -------------- | ----------------- | ---------------------------------------------------------- |
+| Row 1, Col 1   | alcohol           | Glass bottles, aluminum cans/beer bottles                  |
+| Row 1, Col 2   | candy             | Small packaging, often cylindrical or box-shaped           |
+| Row 1, Col 3   | canned\_food      | Cylindrical canned foods                                   |
+| Row 1, Col 4   | chocolate         | Flat packaging, things like Snickers bars                  |
+| Row 2, Col 1   | dessert           | Cup, boxed, flat packaging. Varies widely.                 |
+| Row 2, Col 2   | dried\_food       | Flat sealed bags, often with food photography on packaging |
+| Row 2, Col 3   | dried\_fruit      | Flat sealed bags, clear bags, colored packaging            |
+| Row 2, Col 4   | drink             | Plastic bottles such as sodas, aluminum cans               |
+| Row 3, Col 1   | gum               | Small box or pouch packaging                               |
+| Row 3, Col 2   | instant\_drink    | Varies widely, small cylinders, boxes, sealed packs        |
+| Row 3, Col 3   | instant\_noodles  | Like instant ramen packs or cup-noodle packs               |
+| Row 3, Col 4   | milk              | Small milk cartons, slim box packaging, bottled packs      |
+| Row 4, Col 1   | personal\_hygiene | Items like toothbrushes, mouth wash, toothpaste            |
+| Row 4, Col 2   | puffed\_food      | Inflated bags such as Cheetos, other chip bags             |
+| Row 4, Col 3   | seasoner          | Items varies from soy sauce to small seasoning packets     |
+| Row 4, Col 4   | stationery        | Items such as notebooks, paper, pencils, etc.              |
+| Row 5, Col 1   | tissue            | Small rectangular box packaging with soft branding         |
+| Row 5, Col 2-4 | multi-class       | Multiple items detected simultaneously in a single scene   |
 
 ### Key Visualizations