论文标题

HDD-NET:与互动学习的混合检测器描述符

HDD-Net: Hybrid Detector Descriptor with Mutual Interactive Learning

论文作者

Barroso-Laguna, Axel, Verdie, Yannick, Busam, Benjamin, Mikolajczyk, Krystian

论文摘要

由于诸如SLAM,3D重建或AR应用等领域的进步,局部特征提取仍然是一个活跃的研究领域。这些应用程序的成功取决于功能检测器和描述符的性能。虽然大多数方法的检测器描述符相互作用是基于单个网络检测和描述符中统一的,但我们提出了一种独立处理两者的方法,并专注于学习过程中的相互作用,而不是参数共享。我们将经典的硬矿三联损失作为新的检测器优化项,以根据描述符图来完善候选位置。我们提出了一个密集的描述符,该描述符使用多尺度方法以及手工制作和学习的功能的混合组合,以通过设计获得旋转和尺度稳定性。我们在不同的基准测试中广泛评估了我们的方法,并在HPATCHES和3D重建质量的图像匹配方面显示了对最新技术的改进,同时保持在相机本地化任务上。

Local feature extraction remains an active research area due to the advances in fields such as SLAM, 3D reconstructions, or AR applications. The success in these applications relies on the performance of the feature detector and descriptor. While the detector-descriptor interaction of most methods is based on unifying in single network detections and descriptors, we propose a method that treats both extractions independently and focuses on their interaction in the learning process rather than by parameter sharing. We formulate the classical hard-mining triplet loss as a new detector optimisation term to refine candidate positions based on the descriptor map. We propose a dense descriptor that uses a multi-scale approach and a hybrid combination of hand-crafted and learned features to obtain rotation and scale robustness by design. We evaluate our method extensively on different benchmarks and show improvements over the state of the art in terms of image matching on HPatches and 3D reconstruction quality while keeping on par on camera localisation tasks.

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