GS-Checker: Tampering Localization for 3D Gaussian Splatting

TL;DR

GS-Checker is a novel method that localizes tampered regions in 3D Gaussian Splatting models by integrating tampering attributes, contrastive mechanisms, and cyclic optimization without needing expensive labels.

Contribution

It introduces a new tampering localization approach for 3D Gaussian Splatting that leverages attribute integration, contrastive comparison, and cyclic refinement, avoiding costly supervision.

Findings

Effective tampering localization demonstrated on 3D Gaussian Splatting models.

Outperforms existing methods in accuracy and efficiency.

Does not require expensive 3D labels for training.

Abstract

Recent advances in editing technologies for 3D Gaussian Splatting (3DGS) have made it simple to manipulate 3D scenes. However, these technologies raise concerns about potential malicious manipulation of 3D content. To avoid such malicious applications, localizing tampered regions becomes crucial. In this paper, we propose GS-Checker, a novel method for locating tampered areas in 3DGS models. Our approach integrates a 3D tampering attribute into the 3D Gaussian parameters to indicate whether the Gaussian has been tampered. Additionally, we design a 3D contrastive mechanism by comparing the similarity of key attributes between 3D Gaussians to seek tampering cues at 3D level. Furthermore, we introduce a cyclic optimization strategy to refine the 3D tampering attribute, enabling more accurate tampering localization. Notably, our approach does not require expensive 3D labels for supervision. Extensive experimental results demonstrate the effectiveness of our proposed method to locate the tampered 3DGS area.