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arXiv 2411.08930cs.CVcs.GR
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基于扩散模型的结构模式扩展

Structured Pattern Expansion with Diffusion Models

Sapienza University of Rome(罗马大学);Independent Researcher(独立研究者);University of Modena and Reggio Emilia(摩德纳和雷吉奥艾米利亚大学)

Marzia Riso, Giuseppe Vecchio, Fabio Pellacini

AI总结:

本文提出一种基于扩散模型的结构模式扩展方法,通过微调和噪声滚动技术提升模式生成质量,实现对用户输入的直接控制。

摘要:

最近扩散模型的进步显著提高了材料、纹理和3D形状的合成能力。通过文本或图像对这些模型进行条件控制,用户可以引导生成过程,从而减少创建数字资产所需的时间。在本文中,我们针对结构化、静态模式的合成问题,探讨了扩散模型通常不够可靠且可控性差的现状。我们的方法利用专门针对模式领域优化的扩散模型生成能力,使用户能够通过将部分手绘模式扩展为更大设计来直接控制合成过程,同时保持输入的结构和细节。为了提升模式质量,我们使用低秩适应(LoRA)对图像预训练的扩散模型进行微调,应用噪声滚动技术以确保可铺装性,并利用基于补丁的方法来促进大规模资产的生成。我们通过一系列全面的实验展示了方法的有效性,证明其在生成多样且一致的模式方面优于现有模型,且能直接响应用户输入。

英文摘要:

Recent advances in diffusion models have significantly improved the synthesis of materials, textures, and 3D shapes. By conditioning these models via text or images, users can guide the generation, reducing the time required to create digital assets. In this paper, we address the synthesis of structured, stationary patterns, where diffusion models are generally less reliable and, more importantly, less controllable. Our approach leverages the generative capabilities of diffusion models specifically adapted for the pattern domain. It enables users to exercise direct control over the synthesis by expanding a partially hand-drawn pattern into a larger design while preserving the structure and details of the input. To enhance pattern quality, we fine-tune an image-pretrained diffusion model on structured patterns using Low-Rank Adaptation (LoRA), apply a noise rolling technique to ensure tileability, and utilize a patch-based approach to facilitate the generation of large-scale assets. We demonstrate the effectiveness of our method through a comprehensive set of experiments, showing that it outperforms existing models in generating diverse, consistent patterns that respond directly to user input.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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