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Adaptive Interpolatory Curve Subdivision with Learned Local Angles
Hassan Ugail, Newton Howard
Curve subdivision is pivotal in computer graphics for generating smooth geometric objects from control polygons. Interpolatory subdivision is especially attractive because the refi…
A Heisenberg Lift Descriptor for Order Sensitive Online Handwriting Recognition
Hassan Ugail, Newton Howard
Online handwriting recognition systems typically represent pen trajectories through fixed-length Euclidean shape descriptors that capture the spatial outline of each stroke, but ar…
Training Deep Visual Networks Beyond Loss and Accuracy Through a Dynamical Systems Approach
Hai La Quang, Hassan Ugail, Newton Howard +3
Deep visual recognition models are usually trained and evaluated using metrics such as loss and accuracy. While these measures show whether a model is improving, they reveal very l…
Handcrafted Feature-Assisted One-Class Learning for Artist Authentication in Historical Drawings
Hassan Ugail, Jan Ritch-Frel, Irina Matuzava
Authentication and attribution of works on paper remain persistent challenges in cultural heritage, particularly when the available reference corpus is small and stylistic cues are…