Boundary-Enhanced Segmentation of Pig Point Clouds in Commercial Housing Environments
This study addresses the challenges of ambiguous boundaries, local adhesion, and erroneous segmentation between pigs and background in commercial pig barns by proposing a boundary-aware point cloud segmentation method. The approach employs an Octree Transformer backbone to effectively integrate fine-grained local geometric details with global semantic context. It introduces soft-distance boundary pseudo-labels for continuous boundary supervision and incorporates a novel bidirectional cross-boundary semantic module to explicitly model interactions between boundary cues and semantic features. Experimental results demonstrate that the proposed method significantly outperforms state-of-the-art models on a comprehensive dataset, achieving superior performance in segmentation accuracy, mean Intersection over Union (mIoU), and boundary delineation, thereby providing high-quality point cloud inputs for precision livestock farming.