def _run_coco_evaluation(coco, coco_res, iou_type='bbox', threshold=None):
if isinstance(coco_eval, UnsupportedPackage):
coco_eval.raise_error("MSCOCOorigBaseMetric")
cocoeval = coco_eval(coco, coco_res, iouType=iou_type)
if threshold is not None:
cocoeval.params.iouThrs = threshold
cocoeval.evaluate()
cocoeval.accumulate()
cocoeval.summarize()
res = cocoeval.stats.tolist()
res_len = len(res)
middle_index = res_len //2
assert res_len == 12 if iou_type != 'keypoints' else 10
res = [res[:middle_index], res[middle_index:]]
return res
