Physically Guided Visual Mass Estimation from a Single RGB Image

Fuente: arXiv
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Autori principali: Lee, Sungjae, Jeong, Junhan, Hong, Yeonjoo, Kim, Kwang In
Natura: Preprint
Pubblicazione: 2026
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author Lee, Sungjae
Jeong, Junhan
Hong, Yeonjoo
Kim, Kwang In
author_facet Lee, Sungjae
Jeong, Junhan
Hong, Yeonjoo
Kim, Kwang In
contents Estimating object mass from visual input is challenging because mass depends jointly on geometric volume and material-dependent density, neither of which is directly observable from RGB appearance. Consequently, mass prediction from pixels is ill-posed and therefore benefits from physically meaningful representations to constrain the space of plausible solutions. We propose a physically structured framework for single-image mass estimation that addresses this ambiguity by aligning visual cues with the physical factors governing mass. From a single RGB image, we recover object-centric three-dimensional geometry via monocular depth estimation to inform volume and extract coarse material semantics using a vision-language model to guide density-related reasoning. These geometry, semantic, and appearance representations are fused through an instance-adaptive gating mechanism, and two physically guided latent factors (volume- and density-related) are predicted through separate regression heads under mass-only supervision. Experiments on image2mass and ABO-500 show that the proposed method consistently outperforms state-of-the-art methods.
format Preprint
id arxiv_https___arxiv_org_abs_2601_20303
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Physically Guided Visual Mass Estimation from a Single RGB Image
Lee, Sungjae
Jeong, Junhan
Hong, Yeonjoo
Kim, Kwang In
Computer Vision and Pattern Recognition
Artificial Intelligence
Estimating object mass from visual input is challenging because mass depends jointly on geometric volume and material-dependent density, neither of which is directly observable from RGB appearance. Consequently, mass prediction from pixels is ill-posed and therefore benefits from physically meaningful representations to constrain the space of plausible solutions. We propose a physically structured framework for single-image mass estimation that addresses this ambiguity by aligning visual cues with the physical factors governing mass. From a single RGB image, we recover object-centric three-dimensional geometry via monocular depth estimation to inform volume and extract coarse material semantics using a vision-language model to guide density-related reasoning. These geometry, semantic, and appearance representations are fused through an instance-adaptive gating mechanism, and two physically guided latent factors (volume- and density-related) are predicted through separate regression heads under mass-only supervision. Experiments on image2mass and ABO-500 show that the proposed method consistently outperforms state-of-the-art methods.
title Physically Guided Visual Mass Estimation from a Single RGB Image
topic Computer Vision and Pattern Recognition
Artificial Intelligence
url https://arxiv.org/abs/2601.20303