Xiongjun Guan

I am a fourth year Ph.D student in i-VisionGroup in the Department of Automation at Tsinghua University, advised by Prof. Jianjiang Feng and Prof. Jie Zhou .
In 2021, I received my B.S. degree from the Department of Automation and a minor from Academy of Arts and Design , Tsinghua University.

I have a broad interest in computer vision, pattern recognition and human computer interaction. At present, my research mainly focus on fingerprint recoginition and human computer interaction.

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Research

* indicates equal contribution

▼ Preprints

We introduce a partial fingerprint pose estimation framework that leverages the collaborative potential of Dual-modal guidance from Ridge patches And Capacitive images to Optimize the feature extraction, fusion and representation. Several simple but effective strategies and mechanisms are introduced, including knowledge transfer, MoE, and decoupled probability distribution, to enhance the network's capacity for information mining and interaction.

In this work, we propose a fixed-length dense descriptor of fingerprints, and introduce FLARE—a fingerprint matching framework that integrates the Fixed-Length dense descriptor with pose-based Alignment and Robust Enhancement. This fixed-length representation employs a three-dimensional dense descriptor to effectively capture spatial relationships among fingerprint ridge structures, enabling robust and locally discriminative representations.

In this paper, we estimate the 2D finger pose using a multimodal network and map it to a standardized UV space, followed by nearly lossless mapping to 3D space using simple polynomial functions. We further highlight the applicability and appeal of finger pose in enhancing interactive experiences, and develop several prototypes to demonstrate the potential for interaction.

▼ Publications

A novel framework for joint partial fingerprint identity verification and pose alignment of partial fingerprint pairs is proposed, which utilizes a multi-task CNN-Transformer hybrid network and a pre-training task on enhancement.

Latent fingerprint matching is a daunting task, primarily due to the poor quality of latent fingerprints. In this study, we propose a deep-learning based dense minutia descriptor (DMD) for latent fingerprint matching.

We propose a Phase-aggregated Dual-branch Registration Network to combine the strengths of traditional fingerprint dense registration methods and deep learning.

We proposed an end-to-end network to directly estimate a dense distortion field instead of its low dimensional representation, from a single fingerprint.

We proposed an end-to-end network to directly estimate a dense distortion field from a single fingerprint instead of its low dimensional representation.

We proposed a visualization and pose-specific unfolding method for 3D fingerprints, which can improve the compatibility between 3D and 2D fingerprints in recognition.