How accurately can a photo estimate grams of food?

Controlled test

Weigh food first, then photograph. The AI never sees the weights.

Quick test

Photograph a normal meal, then weigh it to check.

Structured experiments

Portion series

Same food at 50, 100, 150 g… Can AI tell quantities apart?

Repeatability

Same plate, photographed several times. Is the AI stable?

Camera conditions

Top-down vs 45°, known plate, reference card, two photos.

Reference object

With vs without a measured card next to the food.