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DreamGaussian: Generative Gaussian Splatting for Efficient 3D Content Creation (2309.16653v2)

Published 28 Sep 2023 in cs.CV

Abstract: Recent advances in 3D content creation mostly leverage optimization-based 3D generation via score distillation sampling (SDS). Though promising results have been exhibited, these methods often suffer from slow per-sample optimization, limiting their practical usage. In this paper, we propose DreamGaussian, a novel 3D content generation framework that achieves both efficiency and quality simultaneously. Our key insight is to design a generative 3D Gaussian Splatting model with companioned mesh extraction and texture refinement in UV space. In contrast to the occupancy pruning used in Neural Radiance Fields, we demonstrate that the progressive densification of 3D Gaussians converges significantly faster for 3D generative tasks. To further enhance the texture quality and facilitate downstream applications, we introduce an efficient algorithm to convert 3D Gaussians into textured meshes and apply a fine-tuning stage to refine the details. Extensive experiments demonstrate the superior efficiency and competitive generation quality of our proposed approach. Notably, DreamGaussian produces high-quality textured meshes in just 2 minutes from a single-view image, achieving approximately 10 times acceleration compared to existing methods.

PDF HTML Abstract

An Analysis of DreamGaussian: Generative Gaussian Splatting for Efficient 3D Content Creation

Recent advancements in 3D content creation have witnessed a significant shift towards optimization-based 3D generation methods, particularly leveraging score distillation sampling (SDS). Despite delivering promising results, these methods are often hindered by slow per-sample optimization times, thus constraining their practical applications. The paper "DreamGaussian: Generative Gaussian Splatting for Efficient 3D Content Creation" introduces a novel framework aimed at addressing these efficiency issues without compromising quality.

Summary of Contributions

The core contribution of the paper is the introduction of DreamGaussian, a generative 3D content creation framework. The framework's primary innovation lies in employing a 3D Gaussian Splatting model coupled with mesh extraction and UV space texture refinement to enhance efficiency and quality in 3D content generation. The paper critiques the traditional occupancy pruning methods used in Neural Radiance Fields (NeRF) and highlights how the progressive densification of 3D Gaussians offers faster convergence in generative scenarios.

One of the significant achievements of DreamGaussian is its capability to produce high-quality textured meshes from a single-view image in approximately 2 minutes, representing a tenfold speed increase compared to existing methods. This efficiency is facilitated through several key design choices:

  1. 3D Gaussian Splatting: By using 3D Gaussian splatting, the framework simplifies the optimization process. This approach reduces the time and computational resources typically required by volumetric rendering with NeRF.
  2. Mesh Extraction and Refinement: The framework introduces an efficient algorithm for converting 3D Gaussians into textured meshes, accompanied by a UV-space refinement stage. This fine-tuning stage significantly enhances texture detail and prepares the asset for downstream applications.

These contributions indicate a pivotal shift in the strategy for 3D generative modeling, alleviating the constraints faced by previous methods.

Implications and Future Directions

The implications of this framework are multifaceted, affecting both practical applications and theoretical understanding within the field. Practically, the reduction in optimization time and computational overhead opens new avenues for deploying 3D content generation in real-world applications, such as gaming and virtual reality, where rapid asset creation is valuable.

Theoretically, the adoption of Gaussian splatting as an alternative to traditional occupancy-based methods could inspire further research into optimizing 3D representations for generative tasks. This shift could lead to a reevaluation of how spatial information is modeled and reconstructed, possibly reducing the reliance on extensive 3D datasets that are currently a bottleneck due to their resource-intensive nature.

Speculation on future developments in AI could include leveraging this framework for more complex 3D environments and real-time applications. Additionally, integrating DreamGaussian with other emerging AI technologies, such as reinforcement learning and real-time 3D rendering engines, could further broaden its application scope.

Conclusion

DreamGaussian represents a notable advancement in the field of 3D content creation, providing a highly efficient solution for generating 3D assets with competitive quality. By moving towards a Gaussian-based framework, the paper opens pathways for further research into efficient and scalable 3D generation techniques. This work suggests a promising future for optimization-based methods in unlocking rapid and high-quality 3D content generation for broader industry applications.

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Authors (5)
  1. Jiaxiang Tang (23 papers)
  2. Jiawei Ren (33 papers)
  3. Hang Zhou (166 papers)
  4. Ziwei Liu (368 papers)
  5. Gang Zeng (40 papers)
Citations (443)
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