IoU
مقياس IoU
Also known as: Intersection over Union, Jaccard Index
IoU (Intersection over Union, also called the Jaccard index) measures overlap between a predicted bounding box and ground truth: divide the intersection area by the union area. A perfect match scores 1.0; complete miss scores 0. Detection benchmarks like COCO report mAP@0.5 (lenient) and mAP@0.5:0.95 (strict, averaged across ten thresholds).…
Definition
IoU (Intersection over Union, also called the Jaccard index) measures overlap between a predicted bounding box and ground truth: divide the intersection area by the union area. A perfect match scores 1.0; complete miss scores 0. Detection benchmarks like COCO report mAP@0.5 (lenient) and mAP@0.5:0.95 (strict, averaged across ten thresholds). FI Tech treats 0.5 IoU as the production threshold for PPE classes — it accepts minor box drift while rejecting wildly misplaced detections. NMS (non-max suppression) also uses IoU to drop duplicate boxes from the same object.
