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Marc Pollefeys

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#artificial intelligence Preprint Oct 2026

SpaceFlow: Locally Controllable 3D Generation

Current 3D generation methods lack explicit local control: geometric adherence is often defined by a global control strength, and appearance cannot be specified locally. We present SpaceFlow, a training-free pipeline for locally controllable 3D generation from text descriptions and a collection of geometric primitives....

Neil De La Fuente, Joan Lafuente, Mukhammadali Sayfiddinov et al. · 0 citations
Preprint Sep 2026

SplashSplat: Reconstructing Splashing Liquids from Real-World Multi-View Videos

This work introduces a benchmark of 20 real scenes, from coherent streams to violent splashes, captured by seven synchronized, calibrated 4K cameras at 60 fps, with manually refined per-view liquid and container masks and fixed evaluation splits, and presents SplashSplat, built on a single principle: impose physical st...

Pei-Yu Liu, Ding-Xi Zhang, Federico Tombari et al. · 0 citations
#computer vision Preprint Sep 2026

Imagine3D-LLM: Teaching MLLMs to Imagine 3D Scenes Before Answering

Reasoning about the 3D world from multi-view images remains a fundamental challenge for Multimodal Large Language Models (MLLMs). While modern MLLMs handle single-image inputs effectively, they struggle to integrate evidence across viewpoints into a coherent 3D understanding. A growing body of work attempts to close th...

Jaewoo Jung, Hyeonseo Yu, Honggyu An et al. · 0 citations
Preprint Aug 2026

EgoTrack3D: A Modular Framework for Egocentric 3D Object Tracking

This work introduces EgoTrack3D, a modular framework that reconstructs and maintains a dynamic 3D scene representation directly from egocentric RGB video, and replaces dense depth maps with sparse 3D bounding box estimation and integrate interaction-guided dynamic association, enabling EgoTrack3D to maintain accurate s...

Jan Kulik, Bjarni Dagur Thor Karason, Yung-Hsu Yang et al. · 0 citations
#artificial intelligence Preprint Sep 2026

ForceTwin: Physics-informed Digital Twins for Robotic Manipulation from Instrumented Human Interaction

ForceTwin is a system for identifying physics-informed digital twins of articulated objects from instrumented human interaction that achieves 87% goal completion across nine object-embodiment pairs, compared with 60% using VLM-prior and 57% using kinematics-only twins.

Tim Engelbracht, René Zurbrügg, Mayank Mittal et al. · 0 citations
Preprint Aug 2026

Map-Det3D: Metric Feed-Forward 3D Reconstruction Prior for Multi-view 3D Object Detection from Streaming Inputs

Map-Det3D is an online multi-view 3D object detection model that brings detection directly into a 3D space reconstructed from RGB, suggesting that training reconstruction priors for detection is a practical route to stable metric 3D detection from monocular video.

Yung-Hsu Yang, Luigi Piccinelli, S. R. Bulò et al. · 1 citation

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