DreamReward: Text-to-3D Generation with Human Preference
Authors: name: Junliang Ye, name: Fangfu Liu, name: Qixiu Li, name: Zhengyi Wang, name: Yikai Wang, name: Xinzhou Wang, name: Yueqi Duan, name: Jun Zhu

3D content creation from text prompts has shown remarkable success recently.
However, current text-to-3D methods often generate 3D results that do not align
well with human preferences. In this paper, we present a comprehensive
framework, coined DreamReward, to learn and improve text-to-3D models from
human preference feedback. To begin with, we collect 25k expert comparisons
based on a systematic annotation pipeline including rating and ranking. Then,
we build Reward3D -- the first general-purpose text-to-3D human preference
reward model to effectively encode human preferences. Building upon the 3D
reward model, we finally perform theoretical analysis and present the Reward3D
Feedback Learning (DreamFL), a direct tuning algorithm to optimize the
multi-view diffusion models with a redefined scorer. Grounded by theoretical
proof and extensive experiment comparisons, our DreamReward successfully
generates high-fidelity and 3D consistent results with significant boosts in
prompt alignment with human intention. Our results demonstrate the great
potential for learning from human feedback to improve text-to-3D models.