VASSNet: A Vessel-Aware Appearance-Structure Synergistic Network with Hierarchical Semantic Optimization for Retinal Vessel Segmentation
Retinal vessel segmentation underpins risk assessment for ocular and systemic diseases. Existing encoder-decoder networks remain constrained by domain-specific appearance shifts, weak responses from small vessels, and cross-level semantic misalignment, leading to missed distal branches, topological discontinuities, and...