Generative Object Insertion in Gaussian Splatting with a Multi-View Diffusion Model

TL;DR

This paper introduces MVInpainter, a multi-view diffusion-based method for high-quality, view-consistent object insertion into 3D scenes represented by Gaussian Splatting, improving over existing single-view and SDS-based techniques.

Contribution

We propose a novel multi-view diffusion model with ControlNet conditioning for view-consistent inpainting and a mask-aware 3D reconstruction method for enhanced object insertion in 3D scenes.

Findings

Outperforms existing object insertion methods in quality and consistency

Produces diverse, harmonious, and view-consistent 3D scene modifications

Demonstrates superior results through extensive experiments

Abstract

Generating and inserting new objects into 3D content is a compelling approach for achieving versatile scene recreation. Existing methods, which rely on SDS optimization or single-view inpainting, often struggle to produce high-quality results. To address this, we propose a novel method for object insertion in 3D content represented by Gaussian Splatting. Our approach introduces a multi-view diffusion model, dubbed MVInpainter, which is built upon a pre-trained stable video diffusion model to facilitate view-consistent object inpainting. Within MVInpainter, we incorporate a ControlNet-based conditional injection module to enable controlled and more predictable multi-view generation. After generating the multi-view inpainted results, we further propose a mask-aware 3D reconstruction technique to refine Gaussian Splatting reconstruction from these sparse inpainted views. By leveraging these fabricate techniques, our approach yields diverse results, ensures view-consistent and harmonious insertions, and produces better object quality. Extensive experiments demonstrate that our approach outperforms existing methods.