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arXiv 2408.14765cs.CV

CrossViewDiff:一种用于卫星到街景合成的跨视角扩散模型

CrossViewDiff: A Cross-View Diffusion Model for Satellite-to-Street View Synthesis

Sun Yat-Sen University(中山大学);Shanghai Artificial Intelligence Laboratory(上海人工智能实验室);Sensetime Research(商汤科技研究院)

Weijia Li, Jun He, Junyan Ye, Huaping Zhong, Zhimeng Zheng, Zilong Huang, Dahua Lin, Conghui He

AI总结:

本文提出CrossViewDiff跨视角扩散模型,通过卫星场景结构估计与跨视角纹理映射模块构建控制,结合增强的跨视角注意力去噪过程,在标准与GPT评估指标上超越现有方法,生成更逼真的街景全景图。

摘要:

卫星到街景合成旨在根据对应的卫星视角图像生成逼真的街景图像。尽管稳定扩散模型在多种图像生成应用中展现出卓越性能,但它们依赖相似视角的输入来控制生成的结构或纹理,这限制了其在具有挑战性的跨视角合成任务中的应用。在本研究中,我们提出了CrossViewDiff,一种用于卫星到街景合成的跨视角扩散模型。为了解决跨视角间存在的巨大差异所带来的挑战,我们设计了卫星场景结构估计和跨视角纹理映射模块,以构建街景图像合成的结构和纹理控制。我们进一步设计了跨视角控制引导的去噪过程,通过增强的跨视角注意力模块整合上述控制。为了对合成结果进行更全面的评估,我们额外设计了一种基于GPT的评分方法,作为标准评估指标的补充。我们还探讨了不同数据源(例如文本、地图、建筑物高度和多时相卫星图像)对该任务的影响。在三个公开跨视角数据集上的结果表明,CrossViewDiff在标准评估指标和基于GPT的评估指标上均优于当前最先进的方法,能够生成具有更逼真结构和纹理的高质量街景全景图,覆盖乡村、郊区和城市场景。本工作的代码和模型将发布于 https://opendatalab.github.io/CrossViewDiff/。

英文摘要:

Satellite-to-street view synthesis aims at generating a realistic street-view image from its corresponding satellite-view image. Although stable diffusion models have exhibit remarkable performance in a variety of image generation applications, their reliance on similar-view inputs to control the generated structure or texture restricts their application to the challenging cross-view synthesis task. In this work, we propose CrossViewDiff, a cross-view diffusion model for satellite-to-street view synthesis. To address the challenges posed by the large discrepancy across views, we design the satellite scene structure estimation and cross-view texture mapping modules to construct the structural and textural controls for street-view image synthesis. We further design a cross-view control guided denoising process that incorporates the above controls via an enhanced cross-view attention module. To achieve a more comprehensive evaluation of the synthesis results, we additionally design a GPT-based scoring method as a supplement to standard evaluation metrics. We also explore the effect of different data sources (e.g., text, maps, building heights, and multi-temporal satellite imagery) on this task. Results on three public cross-view datasets show that CrossViewDiff outperforms current state-of-the-art on both standard and GPT-based evaluation metrics, generating high-quality street-view panoramas with more realistic structures and textures across rural, suburban, and urban scenes. The code and models of this work will be released at https://opendatalab.github.io/CrossViewDiff/.

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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