Index

From Pixels to Structure: Analysis of Lightweight Vision-Language Models for Document OCR and Structured Output Generation

Investigation on Object Detection in Industrial Settings Centered on Extended Reality Platforms Through Generation and Utilization of Synthetic Data from CAD Models

Privacy-Preserving Structured Chest X-Ray Report Generation using Multimodal Large Language Models within a Federated Learning Framework

This thesis investigates how federated learning can be applied to train vision-language models in the medical domain while preserving patient privacy. The work focuses on enabling multi-institutional collaboration without sharing sensitive data, supporting the development of secure and scalable AI solutions for healthcare.

Comparative Study of traditional and Deep learning Binarization Methods for Historical Document Processing

The aim of this thesis is to present a fairer and more practical comparison between traditional and deep learning-based binarization methods. Models chosen from both selections will be applied to historical document datasets and evaluated against the ground truth, focusings on their practical application, measuring their impacts on OCR performance and binarization quality, and developing a transparent and usable framework for the evaluation and comparison of binarization methods. This will make it possible to compare each method’s results directly in terms of text recognition quality.

Experimental Setup and Resources

Traditional methods:
Otsu and Sauvola.

Deep Learning-Based Models:

SAE (Selectional Autoencoders): to evaluate how well a compact encoder-decoder model learns pixel-level binarization for historical documents DeepOtsu: A U-Net-based enhancement model followed by Otsu thresholding for final binarization.
ROBIN (U-Net Variant): A representative of U-Net-based segmentation models to assess their performance in direct binary mask prediction.

Datasets

DIBCO (2009–2022): Benchmark dataset comprising printed and handwritten degraded documents
HisDB: Historical manuscript datasets with realistic degradation patterns. Technologies and Tools

Evaluation Metrics:

F-measure,
PSNR,
DRD,
NRM,
and OCR accuracy for practical evaluation.

Milestones
1. Literature Review: Study existing binarization techniques mentioned in the models
sections, particularly focusing on their application to historical documents.
2. Dataset Preparation: Collect and preprocess publicly available datasets. Align ground
truth masks and normalize formats for consistent evaluation
3. Model Implementation and Integration: Implement or modify binarization models
using PyTorch; create a single pipeline that includes both deep learning and traditional
models.
4. Evaluation and Comparison: Compare results with common metrics (F-measure,
PSNR, DRD, NRM) and visually compare outputs to quantitative results. The binarized
images can then be fed into an OCR system to evaluate the performance of the OCR
5. Analysis and Interpretation Discuss the strengths and limitations of each technique for
different types of degradation.
6. Documentation and Reporting: Compile all documentation (results and analysis) into a
report.