Smart Retail Shelf Monitor

Design a computer vision system that monitors retail store shelves to track stock levels and detect misplaced items.

Scenario: A grocery chain installs cameras along each aisle to detect when shelves need restocking. The system should identify which products are low, flag misplaced items, and alert staff before customers notice empty shelves.

Your Task: Design the pipeline from shelf images to actionable stock alerts.

Your design should address:

1. Detecting and recognizing individual products on the shelf
2. Estimating stock levels (full, low, empty) for each product zone
3. Identifying misplaced products (wrong shelf location)
4. Generating real-time alerts for store associates

Consider: Visually similar products (e.g., cereal boxes), varying shelf layouts across stores, and changing inventory.