arxivcs.CVcs.AI2026-07-17
Geometry-Enhanced Portion Estimation for Multimodal LLMs
Image-based dietary assessment promises to replace costly, bias-prone manual recalls, but portion estimation remains a major blocker. Multimodal LLMs (MLLMs) recognize a wide range of foods zero-shot in uncontrolled photos, yet they are weak at portion estimation -- a gap we meas…