DOTGraph: CLIP-Driven Feature Disentanglement and Optimal Transport based Graph Learning for Few-Shot Segmentation

Few-shot semantic segmentation aims to build robust models that segment unseen objects using only a few labeled examples. Existing FSS approaches, which rely on semantic feature matching, often suffer from Background Bias, Pose-Scale Discrepancy Bias, and the inability to capture fine object details. These limitations hinder their ability to generalize to novel categories, especially in scenarios with high intra-class variability and fine-grained object structures. To overcome these challenges, we propose DOTGraph, a novel framework that incorporates CLIP-driven feature Disentanglement and Optimal Transport-based Graph learning for robust few-shot segmentation. We evaluate DOTGraph on PASCAL-5i and COCO-20i, achieving state-of-the-art performance with improvements in various few-shot settings. Our results demonstrate that DOTGraph effectively mitigates Background Bias, improves feature alignment, and enhances fine-grained segmentation. Code is available at https://github.com/shreyab1111/DOTGraph.