How Computer Vision Classifies Meals
Modern AI calorie trackers like Cal AI utilize convolutional neural networks and spatial depth estimation to:
- Segment the Plate: Differentiate individual food components (e.g., grilled salmon, brown rice, steamed asparagus).
- Estimate Volumetric Density: Approximate weight in grams based on bounding geometry and plate perspective.
- Query Nutrition Indexes: Match items against verified USDA FoodData Central entries to output instant calories, protein, carbs, and fats.
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Scientific References & Clinical Studies
- Image-based dietary assessment: A review using computer vision — Nutrients, 2020