Research

My research focuses on developing reliable, end-to-end AI systems, from data collection and annotation through model development, evaluation, and deployment. The projects below summarize the broader research programs I have worked on, rather than repeating individual papers or method names already listed under Publications.

Showing all 6 research projects

Medical AI · Computational Pathology

Multimodal Analysis in Digital Pathology

Whole-slide images progressing through tissue tiles, tissue interpretation, and a report
Conceptual overview of the workflow
Jul 2024 to Present
Funder: National Institutes of Health (NIH), USA
Role: Postdoctoral Researcher

Developing end-to-end whole-slide image (WSI) and multimodal histopathology pipelines, with an emphasis on scalable image processing, trustworthy data quality, pathology foundation models, and reproducible downstream analysis.

Research objectives & contributions
  • Build workflows for WSI and tile-level tissue classification, tumor segmentation, and image-text analysis.
  • Design artifact filtering, tile extraction, and image-quality checks for consistent model inputs.
  • Use QuPath for tumor-region annotations and reference-label quality assurance.
  • Curate large-scale, tile-level histopathology datasets for benchmarking and reproducible evaluation.
  • Train and integrate image and multimodal foundation models for biomedical analysis and reporting.
  • In related clinical laboratory AI work, develop automated analysis of serum protein electrophoresis and immunofixation electrophoresis, including monoclonal peak quantification and abnormal-band detection.
Industrial Computer Vision

Abnormal Image Detection and Localization of Fabric Products

Fabric image inspection followed by anomaly detection and defect localization
Conceptual overview of the workflow
Sep 2022 to Feb 2024
Funder: National Research Foundation (NRF), South Korea
Role: Project Lead

Developed image-analysis methods to distinguish defective from non-defective fabric products and localize irregularities for automated quality-control inspection.

Research objectives & contributions
  • Apply spectral clustering to separate defect and non-defect image groups.
  • Use transfer learning with deep convolutional neural networks for defect detection and localization.
  • Develop repeatable vision-based workflows for industrial anomaly inspection.
Gesture Recognition · Human-Computer Interaction

Gesture Recognition and Interactive Systems

Gesture video progressing through landmark tracking, temporal modeling, and interactive output
Conceptual overview of the workflow
Feb 2022 to May 2023
Funder: School of Computer Science and Engineering, Kyungpook National University, South Korea
Role: Project Lead

Investigated real-time gesture understanding for Indian Sign Language and interactive applications through visual landmark tracking and temporal sequence learning.

Research objectives & contributions
  • Curate multi-label datasets for sign-language recognition and gesture-driven music interaction.
  • Extract timestamped face, hand, and pose landmark sequences using MediaPipe.
  • Train GRU-based models to learn the temporal dynamics of human gestures.
  • Map recognized gestures into language or musical representations for interactive output.
Efficient Object Detection

Lightweight Model for Disabled Parking Sign Detection

Small parking sign detection from input to multi-scale feature fusion and localization
Conceptual overview of the workflow
Jul 2021 to Dec 2021
Funder: Small and Medium Business Technology Information Promotion Agency, South Korea
Role: Project Developer and Lead

Developed a lightweight, feature-fusion-based object detector to improve small disabled-parking-sign localization while controlling model size and computational cost.

Research objectives & contributions
  • Enhance YOLOv5 for small-object detection through PANet and weighted BiFPN feature fusion.
  • Explore architectural simplifications to reduce parameters and floating-point operations.
  • Evaluate on 1,025 original sign images expanded through augmentation to approximately 15,000 samples.
Document AI · Sequence Modeling

Korean Handwritten Text Recognition

Historical handwritten documents progressing through text detection and transcription
Conceptual overview of the workflow
Dec 2021 to Feb 2022
Funder: Small and Medium Business Technology Information Promotion Agency, South Korea
Role: Project Lead

Built a document understanding pipeline for locating historical Korean handwritten text and converting detected regions into machine-readable transcription.

Research objectives & contributions
  • Prepare handwritten text annotations and bounding-box labels.
  • Detect text regions using CNN-based localization methods.
  • Transcribe handwritten sequences using bidirectional LSTM models.
Affective Computing · Intelligent Systems

Real-Time Emotion Recognition System

Webcam input progressing through face landmark analysis and emotion modeling
Conceptual overview of the workflow
Mar 2021 to Feb 2022
Funder: Small and Medium Business Technology Information Promotion Agency, South Korea
Role: Project Developer

Investigated webcam-based expression analysis and an emotion-aware decision-support prototype using multi-region landmark extraction and machine-learning models.

Research objectives & contributions
  • Curate a custom webcam dataset with diverse facial expressions and recording conditions.
  • Extract face, hand, and body landmarks with MediaPipe.
  • Train and benchmark multiple machine-learning approaches for real-time emotion recognition.
  • Explore integration with a digital-twin prototype; this research is not presented as a clinically validated diagnostic system.

Research projects summarize the broader work and responsibilities. Manuscript titles, acceptance status, and publication links are presented separately under Publications.