Ze-Yao Hou

Vision-Based Instance Segmentation of Piezoelectric Crystal Defects Using a Hybrid Bidirectional CNN–Transformer Network

Accurate defect instance segmentation is essential for automated quality inspection of piezoelectric crystals, where scratches, stains, and other surface defects often show large scale variation, irregular morphology, and weak contrast against complex backgrounds. Existing CNN-based segmentation models capture local te...