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arXiv 2308.13245cs.CV

基于方形对称几何图的3D人脸形状非配对多域属性迁移

Unpaired Multi-domain Attribute Translation of 3D Facial Shapes with a Square and Symmetric Geometric Map

Institute of Computing Technology, Chinese Academy of Sciences(中国科学院计算技术研究所);University of Chinese Academy of Sciences(中国科学院大学);Soochow University(苏州大学)

Zhenfeng Fan, Zhiheng Zhang, Shuang Yang, Chongyang Zhong, Min Cao, Shihong Xia

AI总结:

针对3D人脸属性迁移的现有局限,提出结合方形对称几何图、非配对多域学习框架和分层判别器的3D人脸属性迁移方法,在高保真形状生成上优于现有技术,可支撑表情迁移等下游应用。

摘要:

尽管近年来面向图像的人脸属性迁移已取得显著进展,但面向形状的3D人脸属性迁移仍是一个未解决的问题,这主要受限于3D生成模型的匮乏以及3D人脸数据的低效利用。为缓解这些局限,我们提出了一个用于3D人脸属性迁移的学习框架。首先,我们定制了一种用于3D形状表示的新型几何图,并将其嵌入到端到端生成对抗网络中。该几何图在方形图像网格上对称地表示3D形状,同时在局部最小二乘意义下保留3D顶点的邻接关系,这使得模型能够有效学习不同属性数据的潜在表示。其次,我们采用了一个统一的非配对学习框架来实现多域属性迁移,它不仅能有效利用来自多个域的数据相关性,还能减轻对难以获取的配对数据的约束。最后,我们为判别器设计了分层架构,以确保生成结果的鲁棒性,避免出现全局和局部伪影。我们开展了大量实验,证明了所提框架在生成高保真度人脸形状方面优于现有最优方法。给定输入3D人脸形状,该框架能够合成具有不同属性的新形状,可应用于表情迁移、性别转换和年龄变化等下游任务。代码位于https://github.com/NaughtyZZ/3D_facial_shape_attribute_translation_ssgmap。

英文摘要:

While impressive progress has recently been made in image-oriented facial attribute translation, shape-oriented 3D facial attribute translation remains an unsolved issue. This is primarily limited by the lack of 3D generative models and ineffective usage of 3D facial data. We propose a learning framework for 3D facial attribute translation to relieve these limitations. Firstly, we customize a novel geometric map for 3D shape representation and embed it in an end-to-end generative adversarial network. The geometric map represents 3D shapes symmetrically on a square image grid, while preserving the neighboring relationship of 3D vertices in a local least-square sense. This enables effective learning for the latent representation of data with different attributes. Secondly, we employ a unified and unpaired learning framework for multi-domain attribute translation. It not only makes effective usage of data correlation from multiple domains, but also mitigates the constraint for hardly accessible paired data. Finally, we propose a hierarchical architecture for the discriminator to guarantee robust results against both global and local artifacts. We conduct extensive experiments to demonstrate the advantage of the proposed framework over the state-of-the-art in generating high-fidelity facial shapes. Given an input 3D facial shape, the proposed framework is able to synthesize novel shapes of different attributes, which covers some downstream applications, such as expression transfer, gender translation, and aging. Code at https://github.com/NaughtyZZ/3D_facial_shape_attribute_translation_ssgmap.

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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