arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2407.08061cs.CV

地理特定视图生成——从卫星视图推断几何上下文感知的高分辨率地面视图

Geospecific View Generation -- Geometry-Context Aware High-resolution Ground View Inference from Satellite Views

The Ohio State University(俄亥俄州立大学)

Ningli Xu, Rongjun Qin

AI总结:

针对卫星与地面视图差异大的问题,提出地理特定视图生成流水线,结合建筑物优化与地理特定先验,仅用卫星图像生成分辨率提升十倍以上的高保真地理特定地面视图。

摘要:

在城市场景中从卫星图像预测真实的地面视图是一项具有挑战性的任务,因为卫星图像与地面视图图像之间存在显著的视图差异。我们提出了一种新颖的流水线来应对这一挑战,通过生成地理特定视图,最大程度地契合多视图卫星图像中的弱几何结构与纹理信息。与现有方法从俯视卫星图像的部分语义或几何等线索生成图像不同,我们的方法利用卫星图像中的全面信息,直接预测对应地理位置的地面视图图像,生成的地面级图像分辨率提升了十倍甚至更多。我们采用了一种新颖的建筑物优化方法,以减少卫星数据在地面层面的几何失真,这为使用扩散网络进行视图合成确保了准确的条件。此外,我们提出了一种新颖的地理特定先验,它引导扩散模型的分布学习,使其更贴近与预测图像地理位置更接近的图像样本。我们证明,我们的流水线是首个仅基于卫星图像就能生成接近真实且具有地理特定性的地面视图的方法。

英文摘要:

Predicting realistic ground views from satellite imagery in urban scenes is a challenging task due to the significant view gaps between satellite and ground-view images. We propose a novel pipeline to tackle this challenge, by generating geospecifc views that maximally respect the weak geometry and texture from multi-view satellite images. Different from existing approaches that hallucinate images from cues such as partial semantics or geometry from overhead satellite images, our method directly predicts ground-view images at geolocation by using a comprehensive set of information from the satellite image, resulting in ground-level images with a resolution boost at a factor of ten or more. We leverage a novel building refinement method to reduce geometric distortions in satellite data at ground level, which ensures the creation of accurate conditions for view synthesis using diffusion networks. Moreover, we proposed a novel geospecific prior, which prompts distribution learning of diffusion models to respect image samples that are closer to the geolocation of the predicted images. We demonstrate our pipeline is the first to generate close-to-real and geospecific ground views merely based on satellite images.

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。

↑