3 papers
cs.CV2026
Periocular Soft Biometrics: A Survey and Applications to Multimedia Forensics and Disinformation Detection
Fernando Alonso-Fernandez, Kevin Hernandez-Diaz, Josef Bigun
Soft-biometric attributes such as gender, age, and ethnicity provide valuable ancillary evidence when full identity recognition is not feasible, supporting applications in forensic…
cs.CV2026
Explicit Over Implicit: Enhancing CNNs Via Complex Structure Tensor Representations for Periocular Recognition
Kevin Hernandez-Diaz, Josef Bigun, Fernando Alonso-Fernandez
Our study provides evidence that CNNs struggle to extract orientation features effectively. We show that using the Complex Structure Tensor, which contains compact orientation feat…
cs.CV2025
Total Least Square Optimal Analytic Signal by Structure Tensor for N-D images
Josef Bigun, Fernando Alonso-Fernandez
We produce the analytic signal by using the Structure Tensor, which provides Total Least Squares optimal vectors for estimating orientation and scale locally. Together, these vecto…