Vessel re-identification via background structure learning
摘要
Object re-identification is a fundamental task in computer vision with wide applications in intelligent transportation and maritime security. In vessel re-identification, however, rainy and foggy conditions often cause severe image degradation, resulting in blurred contours, feature shifts, and identity confusion among vessels with similar appearance colors, which significantly degrades recognition performance. To address these challenges, this paper proposes a background structure-driven joint optimization framework, termed joint structure-prior learning (JSPL). JSPL introduces the residue channel prior (RCP) to model target-background structural relations at the channel level, effectively suppressing rain-fog interference while reducing reliance on color cues. In addition, a background structure enhancement module (BSEM) is designed to strengthen the representation of key contour regions, improving robustness to mixed degradations. Experimental results on VesselReID_Adverse dataset demonstrate that JSPL achieves superior feature extraction capability and environmental adaptability compared with mainstream methods. Ablation studies further verify the effectiveness of the background structure-guided module (BSGM) and BSEM, whose synergistic design enhances the model’s focus on structural identity features.