Update coco_utils.py

coco_utils.py

@@ -89,13 +89,12 @@ def get_coco_api_from_dataset(dataset):
 class CocoEvaluator(object):
     def __init__(self, coco_gt, iou_types):
         assert isinstance(iou_types, (list, tuple))
-        coco_gt = copy.deepcopy(coco_gt)
-        self.coco_gt = coco_gt
+        self.coco_gt = copy.deepcopy(coco_gt)
 
         self.iou_types = iou_types
         self.coco_eval = {}
         for iou_type in iou_types:
-            self.coco_eval[iou_type] = COCOeval(coco_gt, iouType=iou_type)
+            self.coco_eval[iou_type] = COCOeval(self.coco_gt, iouType=iou_type)
 
         self.img_ids = []
         self.eval_imgs = {k: [] for k in iou_types}