Borbás, Péter, Troll, Ede (2026) Topology-Aware Neural Vectorization of Orienteering Maps: Contour Segmentation as a Demanding Test Case for Editable Reconstruction In: Proceedings of the 13th International Conference on Applied Informatics. Eger, Eszterházy Károly Catholic University Líceum Publisher. pp. 66-80.
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Absztrakt (kivonat)
We present a reproducible end-to-end pipeline for converting printed orienteering maps into editable vector layers. While the broader framework targets multiple ISOM symbol classes, this paper focuses on elevation contours as a particularly demanding test case because they are central to terrain interpretation, frequently occluded by overprinted symbols, and sensitive to topological degradation during raster-to-vector conversion. To assess practical usefulness rather than raster similarity alone, we combine overlap metrics (Dice, IoU, Boundary-F1) with topology- and structureaware measures, including Betti error, warping error, and graph-level error proxies. The experiments reveal a consistent raster–vector mismatch: models with nearly identical raster validation scores can produce materially different vector graphs after tracing. In particular, U-Net with a ResNet-18 encoder provided the best efficiency–quality trade-off despite near-tied raster scores with heavier variants, while topology-aware losses improved topologyrelated raster metrics without a comparably strong advantage in the postvectorization evaluation. These results show that editable map reconstruction must be evaluated end-to-end in the vector domain, since raster overlap alone is not a reliable proxy for downstream structural fidelity or subsequent editing effort.
| Mű típusa: | Könyvrészlet - Book section |
|---|---|
| Szerző: | Szerző neve Email MTMT azonosító ORCID azonosító Közreműködés Borbás, Péter NEM RÉSZLETEZETT NEM RÉSZLETEZETT NEM RÉSZLETEZETT Szerző Troll, Ede NEM RÉSZLETEZETT NEM RÉSZLETEZETT NEM RÉSZLETEZETT Szerző |
| Megjegyzés: | This research was supported by the EKÖP-25-I-1 scholarship program. |
| Kapcsolódó URL-ek: | |
| Kulcsszavak: | orienteering maps, map vectorization, contour extraction, U-Net, topology-aware evaluation, raster-to-vector conversion |
| Nyelv: | angol |
| DOI azonosító: | 10.17048/icai.2026.66 |
| Felhasználó: | Tibor Gál |
| Dátum: | 22 Szep 2026 06:50 |
| Utolsó módosítás: | 22 Szep 2026 06:50 |
| URI: | http://publikacio.uni-eszterhazy.hu/id/eprint/9436 |
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