arXiv:2602.15493cs.CV2026-02

轻量级端到端模型,直接从指纹图提取细节特征,精度和效率均领先。

LEADER: Lightweight End-to-End Attention-Gated Dual Autoencoder for Robust Minutiae Extraction

  • 采用双自编码器+注意力门控结构,实现端到端推理
  • 在NIST SD27上F1分数比专用隐性指纹提取器高34%
  • 仅0.9M参数,推理速度优于主流商业软件

指纹识别中的细节特征提取正逐步转向深度学习。然而,真正实现端到端、无需分步预处理与后处理的方法仍较少。本文提出LEADER(轻量级端到端注意力门控双自编码器),直接将原始指纹图像映射为包含位置、方向和类型的细节特征描述符。该架构结合非极大值抑制与角度解码,仅用0.9M参数即可完成完整端到端推理。其创新的“城堡-护城河-城墙”真值编码方式与双自编码器结构通过注意力门控机制互联。实验表明,LEADER在平纹指纹上达到顶尖准确率,并在跨域泛化上表现优异,于NIST SD27数据集上相较专用隐性指纹提取器提升34% F1分数。样本级分析显示平均排名为2.07,47%样本排名第一,超过次优方法一倍以上。模型内部表征与分割掩码、方向场、频率图和骨架等领域特征一致。GPU推理仅需15ms,CPU需322ms,计算效率超越领先商业软件。源码与预训练权重已公开,便于复现。

原文摘要 · Abstract (English)

Minutiae extraction, a fundamental stage in fingerprint recognition, is increasingly shifting toward deep learning. However, truly end-to-end methods that eliminate separate preprocessing and postprocessing steps remain scarce. This paper introduces LEADER (Lightweight End-to-end Attention-gated Dual autoencodER), a neural network that maps raw fingerprint images to minutiae descriptors, including location, direction, and type. The proposed architecture integrates non-maximum suppression and angular decoding to enable complete end-to-end inference using only 0.9M parameters. It employs a novel "Castle-Moat-Rampart" ground-truth encoding and a dual-autoencoder structure, interconnected through an attention-gating mechanism. Experimental evaluations demonstrate state-of-the-art accuracy on plain fingerprints and robust cross-domain generalization to latent impressions. Specifically, LEADER attains a 34% higher F1-score on the NIST SD27 dataset compared to specialized latent minutiae extractors. Sample-level analysis on this challenging benchmark reveals an average rank of 2.07 among all compared methods, with LEADER securing the first-place position in 47% of the samples-more than doubling the frequency of the second-best extractor. The internal representations learned by the model align with established fingerprint domain features, such as segmentation masks, orientation fields, frequency maps, and skeletons. Inference requires 15ms on GPU and 322ms on CPU, outperforming leading commercial software in computational efficiency. The source code and pre-trained weights are publicly released to facilitate reproducibility.

指纹识别端到端轻量模型细节提取

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