Projects

Selected research and engineering work.

PriniaXR — Differentially Private Face Recognition
  • Built a differentially private face recognition pipeline integrated into XR environments, balancing privacy with identification performance.
  • Designed end-to-end Python workflows for data preprocessing, model training, evaluation and inference, emphasising privacy-preserving transforms and secure handling of sensitive data.
PyTorch · scikit-learn · Python
Poultryfi — Egg Counting & Grading
  • Developed computer vision models that automated egg counting and quality grading with better-than-human accuracy, reducing manual effort and cost.
  • Built Python batch pipelines to ingest imagery and generate structured production records for downstream reporting; deployed to several small-scale farms.
  • Compressed large object detection models using knowledge distillation and quantisation for optimal performance on edge devices.
PyTorch · TensorFlow · Python · Edge deployment
3D-Motaas — Motion Capture Search Engine
  • Implemented autoencoder-based motion similarity and feature engineering to enable fast retrieval across motion-capture datasets.
  • Created Python tooling to clean, transform and index sequences for repeatable offline/batch inference and querying.
  • Built a horizontally scalable distributed pipeline to parallelise motion processing across machines.
PyTorch · Celery · Docker · Python

Publications

N. Hadjisavvas, B. Paige, A. Tripp · 2025
EurIPS 2025 Workshop: Epistemic Intelligence in Machine Learning
G. E. Raptis, C. Katsini, N. Hadjisavvas, E. Stavrakis · 2024
International Conference on Computer and Applications (ICCA), Cairo, Egypt · pp. 1–6
Real-Time Egg Detection Using Edge Computer Vision
N. Hadjisavvas, N. Nicolaou, E. Stavrakis · 2024
1st International Conference on Accessible Digital Agriculture Technologies (CADAT), Valencia, Spain · pp. 16–22
P. Panagi, S. Karatsiolis, K. Mosphilis, N. Hadjisavvas, A. Kamilaris, N. Nicolaou, E. Stavrakis, V. Vassiliades
Preprint · SSRN