计算机科学 ›› 2026, Vol. 53 ›› Issue (6A): 250600228-8.doi: 10.11896/jsjkx.250600228
单程程1, 梅春1, 李未亭1, 郭原源2, 钱伟行2, 熊智3
SHAN Chengcheng1, MEI Chun1, LI Weiting1, GUO Yuanyuan2, QIAN Weixing2, XIONG Zhi3
摘要: 航空遥感目标检测技术所获取的高精度基准图语义信息,可有效提升景象匹配导航系统的感知维度。由于遥感图像尺度大、目标密度高且标注成本昂贵,限制了高性能检测模型的训练与应用。针对景象匹配场景的语义目标检测中面临的源域与目标域数据分布差异及目标域标注数据不足的问题,提出了一种高效的主动学习方法来优化目标域样本的选择。该方法利用源域已标注数据和目标域未标注数据,通过主动学习策略从目标域中选取具有高信息量的样本进行人工标注,从而弥补目标域数据标注不足带来的影响。文中设计了3种主动学习评分函数——一致性评分、判别器评分和余弦差异评分,分别从检测框预测不一致性、领域归属概率以及特征差异角度等方面来评估目标域样本的标注价值。同时,还构建了一套针对目标检测任务的评估框架,考虑每张图像的整体标注效果并量化每个检测框的标注成本。实验证明,该最佳方法能够在目标域上将主动学习的目标检测性能提高约3.29%,同时将目标域所需的标注边界框数量减少约17.6%。所提方法在标注资源有限的条件下,有效提升了目标检测性能与领域迁移能力,能够应对源域与目标域之间因分布差异导致的模型性能下降问题,为遥感场景中的跨域目标检测提供了新的解决思路,为构建高精度的语义基准图提供了可靠的数据支持,进而提升了景象匹配导航的精度和可靠性。
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