OSM, GoogleEarth, CityTopia
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CityDreamer4D研究中使用的数据集包括OSM、GoogleEarth和CityTopia。OSM数据集由OpenStreetMap提供,涵盖全球80个城市的语义地图和高度场,覆盖面积超过6000平方公里,主要用于生成真实世界的城市布局。GoogleEarth数据集通过Google Earth Studio采集,包含24000张纽约市的无人机视角图像,并附带3D语义和实例标注。CityTopia数据集是一个高质量合成数据集,基于Unreal Engine 5生成,包含37500张街景和无人机视角图像,提供精确的2D和3D语义及实例标注。这些数据集共同支持4D城市生成任务,旨在解决城市生成中的动态与静态场景分离问题,应用于城市模拟、实例编辑和城市风格化等领域。
The datasets utilized in the CityDreamer4D study consist of OSM, GoogleEarth, and CityTopia. The OSM dataset is sourced from OpenStreetMap, covering semantic maps and elevation fields of 80 global cities with a total coverage area exceeding 6,000 square kilometers, and it is primarily employed to generate realistic real-world urban layouts. The GoogleEarth dataset is collected via Google Earth Studio, containing 24,000 drone-view images of New York City, along with 3D semantic and instance annotations. The CityTopia dataset is a high-quality synthetic dataset generated using Unreal Engine 5, encompassing 37,500 street-view and drone-view images, and providing precise 2D and 3D semantic and instance annotations. Collectively, these datasets support 4D urban generation tasks, aiming to address the challenge of separating dynamic and static scenes during urban generation, and have applications in fields such as urban simulation, instance editing, and urban stylization.

- 1CityDreamer4D: Compositional Generative Model of Unbounded 4D Cities南洋理工大学 · 2025年



