@inproceedings{
wang2024hallod,
title={Hallo3D: Multi-Modal Hallucination Detection and Mitigation for Consistent 3D Content Generation},
author={Hongbo Wang and Jie Cao and Jin Liu and Xiaoqiang Zhou and Huaibo Huang and Ran He},
booktitle={The Thirty-eighth Annual Conference on Neural Information Processing Systems},
year={2024},
url={https://openreview.net/forum?id=pqi4vqBYXW}
}
Recent advancements in 3D content generation have been significant, primarily due to the visual priors provided by pretrained diffusion models. However, large 2D visual models exhibit spatial perception hallucinations, leading to multi-view inconsistency in 3D content generated through Score Distillation Sampling (SDS). This phenomenon, characterized by overfitting to specific views, is referred to as the "Janus Problem". In this work, we investigate the hallucination issues of pretrained models and find that large multimodal models without geometric constraints possess the capability to infer geometric structures, which can be utilized to mitigate multi-view inconsistency. Building on this, we propose a novel tuning-free method. We represent the multimodal inconsistency query information to detect specific hallucinations in 3D content, using this as an enhanced prompt to re-consist the 2D renderings of 3D and jointly optimize the structure and appearance across different views. Our approach does not require 3D training data and can be implemented plug-and-play within existing frameworks. Extensive experiments demonstrate that our method significantly improves the consistency of 3D content generation and specifically mitigates hallucinations caused by pretrained large models, achieving state-of-the-art performance compared to other optimization methods.
Hallo3D: Multi-Modal Hallucination Detection and Mitigation for Consistent 3D Content Generation
Hongbo Wang Jie Cao Jin Liu Xiaoqiang Zhou Huaibo Huang Ran He