Oline A. Ranum
PhD researcher · Centre for Vision, Speech and Signal Processing, University of Surrey
My research focuses on Sign Language Processing, Recognition, and Translation, with a particular interest in spatial grammar and productive constructions.
I'm supervised by Dr. Richard Bowden and Dr. Simon Hadfield.
Selected publications
All projects- WACV 2027
Beyond BLEU: A Case for Redefining Sign Language Translation Benchmarks
An evaluation study across six SLT systems showing that gains in BLEU-4 are not on their own evidence of better sign understanding.
- Annu. Rev. Ling.
Machine Translation for Sign Languages
A review of sign language recognition, translation, and production, balancing technical challenges with ethics and community involvement.
- ECCV 2026
BackTranslation2.0: A Linguistically Motivated Metric to Assess Sign Language Production
A linguistically grounded, agentic metric for text-to-sign translation, validated against native Deaf raters on BSL.
- Under review
What's the Point? Spatial Grammar & Index Resolution for Sign Language Processing
A pose-based index detector and online entity memory that substantially improve pointing-sign recovery in CSLR without retraining the backbone.
- ICML 2024 W
NGT200: Geometric Multi-View Isolated Sign Recognition
A multi-view benchmark for NGT; SE(2)-equivariant Temporal-PONITA improves recognition by 8–22% over SL-GCN.
- LREC-COLING 2024
3D-LEX v1.0: 3D Lexicons for ASL and Sign Language of the Netherlands
A motion-capture dataset of 2,000 signs with semi-automatic phonetic annotation matching expert accuracy.