CLRecogEye : Curriculum Learning towards exploiting convolution features for Dynamic Iris Recognition

TL;DR

This paper introduces CLRecogEye, a curriculum learning approach that leverages convolutional features and spatio-spatial-temporal representations for robust dynamic iris recognition, addressing challenges like variations and reflections.

Contribution

It proposes a novel pipeline using 3D-CNNs and curriculum training to learn discriminative iris features, improving robustness over traditional point-to-point methods.

Findings

Enhanced recognition accuracy under challenging conditions

Effective spatio-spatial-temporal feature modeling

Robust embeddings through curriculum learning

Abstract

Iris authentication algorithms have achieved impressive recognition performance, making them highly promising for real-world applications such as border control, citizen identification, and both criminal investigations and commercial systems. However, their robustness is still challenged by variations in rotation, scale, specular reflections, and defocus blur. In addition, most existing approaches rely on straightforward point-to-point comparisons, typically using cosine or L2 distance, without effectively leveraging the spatio-spatial-temporal structure of iris patterns. To address these limitations, we propose a novel and generalized matching pipeline that learns rich spatio-spatial-temporal representations of iris features. Our approach first splits each iris image along one dimension, generating a sequence of sub-images that serve as input to a 3D-CNN, enabling the network to capture both spatial and spatio-spatial-temporal cues. To further enhance the modeling of spatio-spatial-temporal feature dynamics, we train the model in curriculum manner. This design allows the network to embed temporal dependencies directly into the feature space, improving discriminability in the deep metric domain. The framework is trained end-to-end with triplet and ArcFace loss in a curriculum manner, enforcing highly discriminative embeddings despite challenges like rotation, scale, reflections, and blur. This design yields a robust and generalizable solution for iris authentication.Github code: https://github.com/GeetanjaliGTZ/CLRecogEye