ValueError: need at least one array to concatenate

[hughlee815]

大佬们： 我在运行test.py的时候报了这个错： Traceback (most recent call last): File "test.py", line 163, in <module> main() File "test.py", line 158, in main result = get_official_eval_result(gt_annos, outputs, current_classes=class_names) File "/home/nio/pointdet/SA-SSD/mmdet/core/evaluation/kitti_eval.py", line 829, in get_official_eval_result gt_annos, dt_annos, current_classes, min_overlaps, compute_aos, difficultys) File "/home/nio/pointdet/SA-SSD/mmdet/core/evaluation/kitti_eval.py", line 698, in do_eval_v2 min_overlaps, compute_aos) File "/home/nio/pointdet/SA-SSD/mmdet/core/evaluation/kitti_eval.py", line 576, in eval_class_v3 rets = calculate_iou_partly(dt_annos, gt_annos, metric, num_parts) File "/home/nio/pointdet/SA-SSD/mmdet/core/evaluation/kitti_eval.py", line 371, in calculate_iou_partly [a["location"][:, [0, 2]] for a in gt_annos_part], 0) File "<__array_function__ internals>", line 6, in concatenate **ValueError: need at least one array to concatenate** 请大佬们帮忙看看，感激不尽

[hughlee815]

Traceback (most recent call last): File "test.py", line 163, in main() File "test.py", line 158, in main result = get_official_eval_result(gt_annos, outputs, current_classes=class_names) File "/home/nio/pointdet/SA-SSD/mmdet/core/evaluation/kitti_eval.py", line 829, in get_official_eval_result gt_annos, dt_annos, current_classes, min_overlaps, compute_aos, difficultys) File "/home/nio/pointdet/SA-SSD/mmdet/core/evaluation/kitti_eval.py", line 698, in do_eval_v2 min_overlaps, compute_aos) File "/home/nio/pointdet/SA-SSD/mmdet/core/evaluation/kitti_eval.py", line 576, in eval_class_v3 rets = calculate_iou_partly(dt_annos, gt_annos, metric, num_parts) File "/home/nio/pointdet/SA-SSD/mmdet/core/evaluation/kitti_eval.py", line 371, in calculate_iou_partly [a["location"][:, [0, 2]] for a in gt_annos_part], 0) File "<__array_function__ internals>", line 6, in concatenate ValueError: need at least one array to concatenate Segmentation fault (core dumped)

[chenxyyy]

遇到了相同的问题, 解决方案如下:

 # /data/SA-SSD-master/mmdet/core/evaluation/kitti_eval.py: line549
def eval_class_v3(gt_annos,
                  dt_annos,
                  current_classes,
                  difficultys,
                  metric,
                  min_overlaps,
                  compute_aos=False,
                  num_parts=50):

# 将num_parts=50 改为num_parts=1