RF-DETR-Large for Nine-Class PCB Surface Defect Detection: An Empirical Evaluation of RF-DETR-Large on DsPCBSD+ with Three-Stage Continuation Training

We report the best observed project result on the DsPCBSD+ nine-class PCB surface defect detection benchmark using RF-DETR-Large. Starting from a COCO-pretrained RF-DETR-L checkpoint, we apply a three-stage continuation training recipe: an initial retained stage at 640 × 640 for global epochs 1–3,...