Update mean_avg_precision.py

[chenmingxiang110]

In case the best_gt_idx is not found

[weros21]

for idx, gt in enumerate(ground_truth_img):
                iou = intersection_over_union(
                    torch.tensor(detection[3:]),
                    torch.tensor(gt[3:]),
                    box_format=box_format,
                )
                if iou > best_iou:
                    best_iou = iou
                    best_gt_idx = idx

Have you also noticed something strange here that we not verify that best_gt_idx is not used yet ?

I think it is correct

for idx, gt in enumerate(ground_truth_img):
                iou = intersection_over_union(
                    torch.tensor(detection[3:]),
                    torch.tensor(gt[3:]),
                    box_format=box_format,
                )
                if amount_bboxes[detection[0]][idx] == 0 and iou > best_iou:
                    best_iou = iou
                    best_gt_idx = idx