Yan Xu Chuantao Li Zhenqiang Zhang Liting Geng Yue Liu Chunxiao Wang Zhigang Zhao Jialiang Lv Geo-DETR: Geographical Map Detection Based on Multi-stage Gradient Feature Fusion. 215-226 2025 KSEM (3) https://doi.org/10.1007/978-981-95-3055-7_17 conf/ksem/2025-3 db/conf/ksem/ksem2025-3.html#XuLZGLWZL25 streams/conf/ksem