将纸质地图转为可导航路线，支持徒步和观光使用。
RouteExtract: A Modular Pipeline for Extracting Routes from Paper Maps
- 结合地理配准与U-Net分割，提取地图中的可通行路径
- 在多种地图风格下成功恢复路网，生成可用的GPS路线
- 适合需要本地化路线数据的研究者与开发者
纸质地图在徒步和观光中仍被广泛使用，因其包含经筛选的步道和本地化标注，这些信息常缺失于谷歌地图等数字导航应用。我们提出一个模块化流程，从扫描地图中提取可通行路径，使其适用于基于GPS的导航。该方法融合地理配准、基于U-Net的二值分割、图结构构建及利用路由引擎的迭代优化。我们评估了端到端流程及各组件性能，结果表明该方法能稳健地从多样地图风格中恢复路网，并生成适用于实际场景的GPS路线。
原文摘要 · Abstract (English)
Paper maps remain widely used for hiking and sightseeing because they contain curated trails and locally relevant annotations that are often missing from digital navigation applications such as Google Maps. We propose a pipeline to extract navigable trails from scanned maps, enabling their use in GPS-based navigation. Our method combines georeferencing, U-Net-based binary segmentation, graph construction, and an iterative refinement procedure using a routing engine. We evaluate the full end-to-end pipeline as well as individual components, showing that the approach can robustly recover trail networks from diverse map styles and generate GPS routes suitable for practical use.
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