Skip to content

Nutrition

Reference Object Portion Scaling

Reference object portion scaling places a known-size item in frame so models scale plate area—helpful for travel logging without a food scale.

Reference object portion scaling uses a known-size item—standard fork, credit card, drink can—in the frame so models estimate absolute plate area instead of guessing from crop zoom. Works best on flat plates, poorly on deep bowls.

Optional habit for travel logging without scales.

Common questions

  • What reference objects work best?

    Standard forks, playing cards, or soda cans—items with stable dimensions. Avoid hands alone; finger spread varies too much between people.

Related guide

Desk Worker Lunch Prep Guide: Protein, Portions, and Fifteen-Minute Sunday Setup →

Related terms

Put Reference Object Portion Scaling into practice

Ohga connects nutrition, fitness, focus, and habits with an AI copilot that learns your patterns. Join the waitlist for early access.

← Back to terms