arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2409.06129cs.CVcs.GRcs.LG

DECOLLAGE:通过可控、局部化且学习型的几何增强实现3D细节化

DECOLLAGE: 3D Detailization by Controllable, Localized, and Learned Geometry Enhancement

Simon Fraser University(西蒙菲莎大学);Adobe Research(奥多比研究院);University of Montreal(蒙特利尔大学);Amazon(亚马逊公司)

Qimin Chen, Zhiqin Chen, Vladimir G. Kim, Noam Aigerman, Hao Zhang, Siddhartha Chaudhuri

AI总结:

本文提出DECOLLAGE,通过掩码感知Pyramid GAN与结构损失实现用户可控、局部化的3D几何细节化,可保留粗结构并生成更连贯的高分辨率风格细节。

摘要:

我们提出一种3D建模方法,使终端用户能够利用机器学习来精修或细化3D形状,从而扩展AI辅助3D内容创作的能力。给定一个粗糙体素形状(例如通过简单的盒体拉伸工具或生成式建模产生的形状),用户可以直接在粗糙形状的不同区域上“绘制”来自输入示例形状的、代表引人注目的几何细节的期望目标风格。随后,这些区域被上采样为符合所绘制风格的高分辨率几何。为实现这种可控且局部化的3D细节化,我们在Pyramid GAN的基础上使其具备掩码感知能力。我们设计了新的结构损失和先验,以确保即使所绘制的风格借鉴自不同来源(例如不同的语义部件,甚至不同的形状类别),我们的方法也能同时保留期望的粗糙结构和细粒度特征。通过大量实验,我们表明局部化细节的能力支持了新型交互式创作工作流和应用。实验进一步证明,与基于全局细节化的先前技术相比,我们的方法能够生成保持结构的高分辨率风格化几何,并具有更连贯的形状细节和风格过渡。

英文摘要:

We present a 3D modeling method which enables end-users to refine or detailize 3D shapes using machine learning, expanding the capabilities of AI-assisted 3D content creation. Given a coarse voxel shape (e.g., one produced with a simple box extrusion tool or via generative modeling), a user can directly "paint" desired target styles representing compelling geometric details, from input exemplar shapes, over different regions of the coarse shape. These regions are then up-sampled into high-resolution geometries which adhere with the painted styles. To achieve such controllable and localized 3D detailization, we build on top of a Pyramid GAN by making it masking-aware. We devise novel structural losses and priors to ensure that our method preserves both desired coarse structures and fine-grained features even if the painted styles are borrowed from diverse sources, e.g., different semantic parts and even different shape categories. Through extensive experiments, we show that our ability to localize details enables novel interactive creative workflows and applications. Our experiments further demonstrate that in comparison to prior techniques built on global detailization, our method generates structure-preserving, high-resolution stylized geometries with more coherent shape details and style transitions.

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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