Research · Teaching · Development연구 · 교육 · 개발研究 · 教育 · 開発研究 · 教学 · 开发

Tiong-Sik Ng황충식ン・ティオング・シーク黄忠植

Biometrics, computer vision, and cryptography researcher. 생체인식, 컴퓨터 비전 및 암호학 연구자. 生体認証、コンピュータビジョン、暗号学の研究者。 生物识别、计算机视觉与密码学研究者。

Assistant Professor (Cybersecurity) · Xiamen University Malaysia 조교수 (사이버보안) · 샤먼대학교 말레이시아캠퍼스 助教 (サイバー保護) · 厦門大学マレーシア校 助理教授 (网络安全) · 厦门大学马来西亚分校

Curriculum Vitae
Flexible BiometricsTemplate ProtectionMultimodal LearningProvable Security

About소개紹介关于

Research across recognition, vision, and security. 인식, 비전 및 보안을 아우르는 연구. 認識・ビジョン・セキュリティを横断する研究。 跨越识别、视觉与安全的研究。

Last updated최종 업데이트最終更新最后更新 · —

I am an Assistant Professor at Xiamen University Malaysia. My work lies at the intersection of biometrics, computer vision, and cryptography, with a focus on flexible and privacy-aware biometric recognition. I am particularly interested in systems that remain reliable under practical conditions such as occlusion, modality mismatch, low image quality, and real-world deployment constraints. 저는 샤먼대학교 말레이시아캠퍼스의 조교수입니다. 생체인식, 컴퓨터 비전 및 암호학의 접점에서 연구하며, 유연하고 프라이버시를 고려한 생체인식에 중점을 두고 있습니다. 특히 가림, 모달리티 불일치, 낮은 영상 품질 및 실제 배포 제약과 같은 현실적인 조건에서도 안정적으로 동작하는 시스템에 관심이 있습니다. 厦門大学マレーシア校の助教として、生体認証、コンピュータビジョン、暗号学の接点に取り組んでいます。柔軟性とプライバシーを考慮した生体認証を中心に、遮蔽、モダリティ不一致、低画質、実環境での展開制約といった条件下でも安定して機能するシステムに関心があります。 我是厦门大学马来西亚分校的助理教授,研究位于生物识别、计算机视觉与密码学的交叉领域,重点关注灵活且注重隐私的生物识别方法。我尤其关注在遮挡、模态不匹配、低图像质量以及实际部署限制等条件下仍能保持可靠性的系统。

I received my Doctorate in Engineering from Yonsei University, where my doctoral research focused on conditional periocular-face biometrics for flexible deployment. My broader interests include representation learning, biometric template protection, multimodal learning, and provable security. Alongside research, I teach and supervise undergraduate and postgraduate students in computing and cybersecurity-related areas. 연세대학교에서 공학 박사 학위를 받았으며, 박사 연구에서는 유연한 배포를 위한 조건부 눈 주위-얼굴 생체인식에 중점을 두었습니다. 보다 넓은 관심 분야는 표현 학습, 생체 템플릿 보호, 멀티모달 학습 및 증명 가능한 보안을 포함합니다. 연구와 함께 컴퓨팅 및 사이버보안 관련 분야에서 학부 및 대학원 학생을 가르치고 지도하고 있습니다. 延世大学校で工学博士号を取得し、博士研究では柔軟な展開を目的とした条件付き眼周囲・顔生体認証に取り組みました。より広い関心には、表現学習、生体テンプレート保護、マルチモーダル学習、証明可能安全性が含まれます。研究と並行して、コンピューティングおよびサイバーセキュリティ関連分野で学部・大学院教育と研究指導を行っています。 我在延世大学获得工学博士学位,博士研究聚焦于面向灵活部署的条件性眼周-人脸生物识别。更广泛的研究兴趣包括表征学习、生物模板保护、多模态学习与可证明安全性。同时,我也负责计算与网络安全相关领域的本科与研究生教学及研究指导。

Research연구研究研究

Four connected areas서로 연결된 네 가지 영역つながる四つの領域四个相互关联的方向

The same themes shown in the research overview, distilled for the web.연구 개요의 핵심 주제를 웹에 맞게 간결하게 정리했습니다.研究概要のテーマをウェブ向けに簡潔に整理しています。将研究概览中的主题提炼为适合网页浏览的形式。

01

Flexible Biometrics

Recognition under modality mismatch, occlusion, low resolution, and deployment constraints.

Conditional biometricsCross-modal matchingLow-resolution recognition
02

Biometric Privacy & Template Protection

Protected representations, privacy-preserving recognition, and cancellable biometric templates.

Template protectionProtected embeddingsCancellable biometrics
03

Multimodal Learning & Computer Vision

Representation learning across modalities, domains, models, and challenging visual conditions.

Representation learningCross-model recognitionQuality & alignment
04

Cryptography & Provable Security

Digital signatures, authentication, reductions, and cryptographic security in practical systems.

Digital signaturesTight reductionsAuthentication

Selected Publications

Selected publications in biometric recognition, computer vision, privacy-preserving biometrics, and cryptographic security.

[Journal] Tiong, L. C. O., Sigmund, D., Ng, T. S. & Teoh, A. B. J.
From unimodal to flexible: A survey of generalized biometric systems.
Information Fusion, vol.133, pp. 104267, 2026.
[Book Chapter] Krivokuća Hahn, V., Valenti, M., Talreja, V., Nasrabadi, N., Ng, T. S. & Teoh, A. B. J.
Using Neural Networks to Learn Biometric Template Protection.
Handbook of Biometric Template Protection, pp. 171–201, 2025.
[Journal] Kim, J., Ng, T. S., Kim, T. & Teoh, A. B. J.
Cross-Model Face Recognition via Guided Alignment Mutual Decoupled Distillation.
IEEE Signal Processing Letters, vol.33, pp. 466–470, 2025.
[Journal] Gao C., Yang Z., Ng, T. S., Zhu M. & Teoh, A. B. J.
Bridging the Divide Between Left and Right Palmprints for Cross-Chirality Verification.
IEEE Internet of Things Journal, vol.12, no.15, pp. 32046–32057, 2025.
[Journal] Ng, T. S., Kim, J., & Teoh, A. B. J.
Flexible Secure Biometrics: A Protected Modality-Invariant Face-Periocular Recognition System.
IEEE Transactions on Information Forensics and Security, vol. 20, pp. 4610–4621, 2025.
[Journal] Ng, T. S., & Teoh, A. B. J.
Attention-aware ensemble learning for face-periocular cross-modality matching.
Applied Soft Computing, vol. 175, pp. 113044, 2024.
[Conference] Tan, S.Y., Ng, T. S., & Heng, S.H.
Efficient Fork-Free BLS Multi-signature Scheme with Incremental Signing.
International Conference on Provable Security (ProvSec), pp. 250–268, 2024.
[Journal] Ng, T. S., Chai, J. C. L., Low, C. Y., & Teoh, A. B. J.
Self-Attentive Contrastive Learning for Conditioned Periocular and Face Biometrics.
IEEE Transactions on Information Forensics and Security, vol. 19, pp. 3251–3264, 2024.
[Journal] Ng, T. S., Low, C. Y., Chai, J. C. L., & Teoh, A. B. J.
On the Representation Learning of Conditional Biometrics for Flexible Deployment.
IEEE Access, vol. 11, pp. 82338–82350, 2023.
[Conference] Chai, J. C. L., Ng, T. S., Low, C. Y., Park, J., & Teoh, A. B. J.
Recognizability embedding enhancement for very low-resolution face recognition and quality estimation.
IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR), pp. 9957–9967, 2023.
[Conference] Ng, T. S., Low, C. Y., Chai, J. C. L., & Teoh, A. B. J.
Conditional Multimodal Biometrics Embedding Learning For Periocular and Face in the Wild.
International Conference on Pattern Recognition (ICPR), pp. 812–818, 2022.
[Conference] Ng, T. S., & Teoh, A. B. J.
Fuzzy MP - A Fuzzy Digital Signature Scheme with Biometrics.
International Conference on Mobile Networks and Management (EAI-MONAMI), pp. 299–315, 2022.
[Conference] Ng, T. S., Tan, S. Y., & Chin, J. J.
Improving Signature Schemes With Tight Security Reductions.
International Conference on Information Security Practice and Experience (ISPEC), pp. 273–292, 2019.
[Conference] Ng, T. S., Tan, S. Y., & Chin, J. J.
A Variant of BLS Signature Scheme with Tight Security Reduction.
International Conference on Mobile Networks and Management (EAI-MONAMI), pp. 150–163, 2017.
[Conference] Ng, T. S., Tan, S. Y., & Chin, J. J.
A Variant of Schnorr Signature Scheme with Tight Security Reduction.
International Conference on Information and Communication Technology Convergence (ICTC), pp. 411–415, 2017.

Projects

Selected research and development projects in biometrics, cryptography, AI systems, and secure applications.

NRF Project (S. Korea): Multimodal Biometrics Conditioning and Data-driven Template Hashing (Member - Ph.D. Researcher)

Researched deep learning-based face and periocular biometric recognition for flexible deployment under occlusion and cross-modality settings. Developed conditional embedding and biometric template protection methods for privacy-preserving recognition.

Malaysian Digital Signature Algorithm Proposal: TNC Signature Scheme (MySEAL)

Co-developed the TNC Signature Scheme, a Malaysian digital signature algorithm proposal compatible with Schnorr signatures. Contributed to formal security proofs and C/Libgcrypt implementation under discrete logarithm and elliptic curve settings.

Slides for Technical Report

FRGS Project (Malaysia): Tight Security Reduction Techniques for Cryptography Primitives (Member - M. Sc. Researcher)

Investigated tight security reduction techniques for digital signature schemes and cryptographic primitives. Applied formal reduction-based analysis to improve provable security guarantees under standard model assumptions.

ITEX Exhibition 2016: An Online Digital Medical Certificate System Using Identity-Based Signature (Member - Undergraduate Project)

Implemented a secure digital medical certificate prototype using identity-based signatures, ECC-based encryption, QR code generation, and server-side verification. The system was demonstrated at ITEX 2016 and received a Gold Award.

Teaching & supervision교육 및 지도教育・指導教学与指导

Teaching, mentoring, and research supervision교육, 멘토링 및 연구 지도教育・メンタリング・研究指導教学、指导与研究督导

Courses and supervision areas across computing, biometrics, computer vision, and cybersecurity.컴퓨팅, 생체인식, 컴퓨터 비전 및 사이버보안 분야의 교육과 연구 지도를 담당합니다.コンピューティング、生体認証、コンピュータビジョン、サイバーセキュリティ分野の教育・研究指導を行っています。涵盖计算、生物识别、计算机视觉与网络安全领域的教学和研究指导。

Teaching교육教育教学

Undergraduate computing and cybersecurity courses.컴퓨팅 및 사이버보안 학부 과목.コンピューティングとサイバーセキュリティの学部科目。计算与网络安全本科课程。

BiometricsCryptanalysisComputer ArchitectureFundamentals in Academic Research

Supervision연구 지도研究指導研究指导

Undergraduate and postgraduate research, final-year projects, and internships.학부·대학원 연구, 졸업 프로젝트 및 인턴십 지도.学部・大学院研究、卒業研究、インターンシップの指導。本科与研究生研究、毕业设计及实习指导。

Biometric recognitionComputer visionMultimodal domain alignmentSecure biometricsCybersecurityApplied machine learningData science & explainable AI

Employment Experience

Academic, research, and industry roles across artificial intelligence, cybersecurity, software systems, and applied research.

Xiamen University Malaysia logo

Xiamen University Malaysia

Assistant Professor

  • Teach undergraduate courses in computing and cybersecurity, including biometrics, cryptanalysis, computer architecture, and related technical modules.
  • Supervise undergraduate research projects, final-year projects, and internship students in AI, computer vision, cybersecurity, and software development topics.
  • Contribute to academic administration, assessment preparation, curriculum support, student mentoring, and research grant development.
  • INSUNET FC logo, parent company of Placa Inc.

    주식회사 플라카 (Placa Inc.)

    Subsidiary of INSUNET FC

    AI and Software Technology Development Engineer

  • Architected and deployed an Amazon Connect + Lex V2 (ko_KR) automated call system integrating Lambda, S3, DynamoDB, and CloudWatch, enabling real-time utterance capture, AI-powered response handling, and natural conversational flows for Korean-speaking users.
  • Built and adapted TTS pipelines using FishSpeech, OpenVoice, ElevenLabs, XTTS, and VALL-E for Korean voice generation.
  • Fine-tuned an insurance-domain Korean chatbot with intent classification, retrieval-augmented generation, and evaluation tooling.
  • Configured FreeSWITCH and SIP-based telephony workflows for RTC bridging, internal routing, and hybrid call automation.
  • Hitachi eBworx logo

    Hitachi Hokenso Sdn. Bhd.

    Application Engineer

  • Maintained and deployed enterprise-grade backend systems using the Java Spring Framework and Oracle WebLogic Server.
  • Designed SQL stored procedures and generated operational reports via Jasper Framework.
  • Applied version control and collaborative development using Git for backend modules.
  • Multimedia University logo

    Multimedia University

    Research Assistant

  • Conducted academic research on digital signature schemes and provable security, with a focus on tight reduction techniques.
  • Assisted in formalizing authentication protocols suitable for privacy-preserving or safety-critical systems, contributing to publication-oriented cryptographic analysis.
  • NetEon logo

    NetEon Sdn. Bhd.

    Technical Assistant (Internship)

  • Learnt how to interface computer hardware for industrial purposes, such as soldering and adding components in circuit boards and also configuring radio antennas.
  • Education

    My academic training and research foundations in engineering, biometrics, and cryptographic security.

    Yonsei University logo

    Yonsei University

    Doctorate of Engineering

    2020 - 2025

    On the Realization of Conditional Periocular-Face Biometrics for Flexible Deployment

    Multimedia University logo

    Multimedia University

    Master of Science in Information Technology

    2016 - 2019

    Design of Tight Security Reduction for Signature Schemes

    Multimedia University logo

    Multimedia University

    Bachelor of Engineering (Hons.) Electronics Majoring in Computer

    2012 - 2016

    Secure Digital Medical Certificate System: Identity-Based Signatures

    Methods & tools방법론 및 도구手法・ツール方法与工具

    Methods, frameworks, and research practice연구 방법, 프레임워크 및 실무 도구研究手法・フレームワーク・実務ツール研究方法、框架与实践工具

    Methods 연구 방법 研究手法 研究方法

    Core techniques and research directions. 주요 연구 기법 및 연구 방향. 主要な研究手法および研究方向。 主要研究方法与研究方向。

    Deep Learning 딥러닝 深層学習 深度学习 Representation Learning 표현 학습 表現学習 表征学习 Multimodal Learning 멀티모달 학습 マルチモーダル学習 多模态学习 Biometric Template Protection 생체 템플릿 보호 生体テンプレート保護 生物特征模板保护 Cryptographic Provable Security 암호학적 증명 가능 보안 暗号学的証明可能安全性 密码学可证明安全性

    Frameworks & Computing 프레임워크 및 컴퓨팅 フレームワーク・コンピューティング 框架与计算工具

    Libraries, frameworks, development, and computing tools. 라이브러리, 프레임워크, 개발 및 컴퓨팅 도구. ライブラリ、フレームワーク、開発・コンピューティングツール。 程序库、框架、开发与计算工具。

    Python PyTorch TensorFlow OpenCV NumPy MATLAB Docker Android Java Java SE (Spring) .NET

    Models & Architectures 모델 및 아키텍처 モデル・アーキテクチャ 模型与架构

    Models and architectures used across research and development. 연구 및 개발에 활용한 모델과 아키텍처. 研究・開発で使用したモデルおよびアーキテクチャ。 研究与开发中使用的模型和架构。

    Convolutional Neural Networks 합성곱 신경망 畳み込みニューラルネットワーク 卷积神经网络 Vision Transformers 비전 트랜스포머 Vision Transformer 视觉 Transformer Hybrid CNN–Transformers 하이브리드 CNN–Transformer ハイブリッド CNN–Transformer 混合 CNN–Transformer CLIP Korean BERT 한국어 BERT 韓国語 BERT 韩语 BERT FishSpeech OpenVoice XTTS VALL-E

    Research & Development 연구 및 개발 研究・開発 研究与开发

    Experimentation, evaluation, and development. 실험, 평가 및 개발. 実験、評価、および開発。 实验、评估与开发。

    LaTeX Git Linux AWS Model Evaluation 모델 평가 モデル評価 模型评估 Prototyping 프로토타이핑 プロトタイピング 原型开发

    Languages 언어 言語 语言

    Languages used in academic and professional settings. 학술 및 전문 환경에서 사용하는 언어. 学術・専門環境で使用する言語。 学术与专业环境中使用的语言。

    English 영어 英語 英文 Mandarin Chinese 중국어 中国語 中文 Bahasa Melayu 말레이어 マレー語 马来文

    Professional Registration 전문 자격 등록 専門資格登録 专业资格注册

    Engineering professional registration. 공학 분야 전문 자격 등록. 工学分野の専門資格登録。 工程领域专业资格注册。

    Registered Graduate Engineer under Board of Engineers Malaysia (BEM) (GE158045A) 말레이시아 엔지니어협회(Board of Engineers Malaysia, BEM) 등록 Graduate Engineer (GE158045A) マレーシア技術者委員会(Board of Engineers Malaysia, BEM)登録 Graduate Engineer (GE158045A) 马来西亚工程师委员会(Board of Engineers Malaysia, BEM)注册 Graduate Engineer (GE158045A)

    Contact연락連絡联系

    Get in touch연락하기お問い合わせ联系我

    For academic, research, collaboration, or professional inquiries, feel free to send a message.학술, 연구, 협업 또는 전문적인 문의가 있으시면 편하게 메시지를 보내 주세요.学術、研究、共同研究、または専門的なご相談がありましたら、お気軽にご連絡ください。欢迎就学术、研究、合作或专业相关事项与我联系。