The technology to capture, create, and use three-dimensional (3D) models has become increasingly accessible in recent years. With increasing numbers of use cases for 3D models and collections of rapidly increasing size, better methods to analyze the content of 3D models are required. While previously proposed 3D model collections for research purposes exist, these often contain only untextured geometry and are typically designed for a specific application, which limits their use in quantitative evaluations of modern 3D model analysis methods. In this paper, we introduce the Sketchfab 3D Creative Commons Collection (S3D3C), a new 3D model research collection consisting of 40,802 creative commons licensed models downloaded from the 3D model platform Sketchfab. By including popular freely available models with a wide variety of technical properties, such as textures, materials, and animations, we enable its use in the evaluation of state-of-the-art geometry-based and view-based 3D model analysis and retrieval techniques.

翻译：近年来，三维模型的采集、创建与使用技术已日益普及。随着三维模型应用场景的不断扩展以及数据集规模的快速增长，亟需更有效的方法来分析三维模型的内容。尽管此前已存在为研究目的提出的三维模型数据集，但这些数据集通常仅包含无纹理的几何模型，且多针对特定应用场景设计，这限制了其在现代三维模型分析方法的量化评估中的应用。本文介绍了Sketchfab三维创作共用数据集（S3D3C），这是一个包含40,802个从三维模型平台Sketchfab下载的创作共用许可模型的新型研究数据集。通过纳入具有纹理、材质、动画等多种技术特性的热门免费模型，本数据集能够支持基于几何与基于视图的先进三维模型分析与检索技术的评估。