Multi-view Drone-based Geo-localization via Style and Spatial Alignment
This work addresses geo-localization for drone and satellite systems, offering an incremental improvement by focusing on spatial and style alignment to enhance matching accuracy.
The paper tackles multi-view drone-based geo-localization by matching drone and satellite images with GPS tags, proposing orientation-based spatial alignment and style alignment to address viewpoint and style variances, achieving superior performance on a large-scale benchmark dataset.
In this paper, we focus on the task of multi-view multi-source geo-localization, which serves as an important auxiliary method of GPS positioning by matching drone-view image and satellite-view image with pre-annotated GPS tag. To solve this problem, most existing methods adopt metric loss with an weighted classification block to force the generation of common feature space shared by different view points and view sources. However, these methods fail to pay sufficient attention to spatial information (especially viewpoint variances). To address this drawback, we propose an elegant orientation-based method to align the patterns and introduce a new branch to extract aligned partial feature. Moreover, we provide a style alignment strategy to reduce the variance in image style and enhance the feature unification. To demonstrate the performance of the proposed approach, we conduct extensive experiments on the large-scale benchmark dataset. The experimental results confirm the superiority of the proposed approach compared to state-of-the-art alternatives.