OCR for Degraded Manuscripts Using AI
Audrey Jordan’s doctoral research investigates the use of AI for Handwritten Text Recognition (HTR) in degraded historical scripts, with a particular focus on data efficient approaches suitable for humanities collections. Audrey’s work recognises an ongoing problem with archival sources because they often contain limited training data and exhibit significant physical deterioration or script variation, making standard AI methods difficult to apply effectively. Further, manual transcription is highly timeintensiveand often restricts the scope of historical research. As the researcherexplains, “Transcribing historical things is a nightmare and [there is] too much [data].With low staff, people will not do it and that rules out history [as a subject of study].”
In response, the research develops data-efficient deep learning techniques tailored to low-resource archival environments. Using approximately 600 labelled manuscript samples, the project applies random augmentation to improve robustness and trains arecurrent neural network (RNN) on word-segmented medieval texts to predict sequential content across entire manuscripts. In experimental trials, the model has outperformed comparable commercial systems.
By adapting AI techniques, the research demonstrates how computational methods can expand access to archival materials while preserving the researcher’s role in interpretation and contextual analysis.
Generative AI vs Perceptual Hashes: Security and Privacy Risks for Image-BasedSexual Abuse Removal Tools
Sophie Hawkes PhD research examines the security and privacy risks associated with perceptual hashing systems used to detect and remove image-based sexual abuse material online. Perceptual hashes are designed to function as irreversible digital fingerprints, enabling platforms to identify harmful content without storing original images. However, the project critically evaluates the robustness of these systems in the context of advances in AI.
By training generative adversarial networks (GANs) on perceptual hash values derived from widely used systems such as Facebook’s PDQ and Apple’s Neural Hash, the research demonstrates that approximate reconstructions of original images can be generated, even using consumer-grade hardware. These findings challenge assumptions about the irreversibility and safety of perceptual hashing technologies and highlight the risk that sensitive image data could be exposed if hash values are compromised.
In response, the project proposes more secure, privacy-preserving alternatives, including private set intersection protocols that enable content matching withoutrevealing underlying image data. By combining adversarial testing with defensive design, the research contributes to broader debates on secure AI deployment, digital privacy, and the responsible governance of automated content moderation systems.
Investigating Techniques for Using GenAI in Code Refactoring and Translation
Nathan Rutherford’s PhD is exploring how AI can help update old software by translating programmes written in old code (C) into newer, safer code (Rust). Many organisations still depend on old code, which can be vulnerable to security problems and is expensive to rewrite manually, so using AI as an automated “translator'” can save significant time and money. His work shows that AI can often produce more natural,human-like translations than traditional tools, potentially improving security, readability, and scalability. However, there are drawbacks to using this approach, such as that AI can sometimes “hallucinate'' incorrect code or produce translations that technically run but don’t behave exactly like the original programme. To address this,the student suggests careful testing, having AI systems review each other’s outputs,and combining AI with established code-analysis tools. Overall, the research presents AI as a useful tool for updating legacy systems while realistically acknowledging that it must be carefully checked and supported by other tools to be trusted.