Error when testing on the Cityscapes dataset

[Definiter]

I tried to test my trained model on the Cityscapes dataset via following command:

python experiments/deeplab/deeplab_test.py --cfg experiments/deeplab/cfgs/deeplab_resnet_v1_101_cityscapes_segmentation_dcn.yaml

However, it gave me this error:

Traceback (most recent call last): File "experiments/deeplab/deeplab_test.py", line 20, in test.main() File "experiments/deeplab/../../deeplab/test.py", line 99, in main test_deeplab() File "experiments/deeplab/../../deeplab/test.py", line 95, in test_deeplab pred_eval(predictor, test_data, imdb, vis=args.vis, ignore_cache=args.ignore_cache, logger=logger) File "experiments/deeplab/../../deeplab/core/tester.py", line 102, in pred_eval evaluation_results = imdb.evaluate_segmentations(all_segmentation_result) File "experiments/deeplab/../../deeplab/../lib/dataset/cityscape.py", line 182, in evaluate_segmentations info = self._py_evaluate_segmentation() File "experiments/deeplab/../../deeplab/../lib/dataset/cityscape.py", line 241, in _py_evaluate_segmentation seg_pred = np.array(Image.open(res_save_path)).astype('float32') File "/home/haowang/software/miniconda2/lib/python2.7/site-packages/PIL/Image.py", line 2410, in open fp = builtins.open(filename, "rb") IOError: [Errno 2] No such file or directory: './output/cityscape/deeplab_resnet_v1_101_cityscapes_segmentation_dcn/leftImg8bit_val/results/frankfurt/frankfurt_000001_059642.png'

I guess there is a bug in ./lib/dataset/cityscape.py, line 179, where

if not pred_segmentations: self.write_segmentation_result(pred_segmentations)

should be

if pred_segmentations: self.write_segmentation_result(pred_segmentations)

[stupidZZ]

Yes. That's a bug. The code should be:

if not (pred_segmentations is None):
   self.write_segmentation_result(pred_segmentations)

Thanks a lot:)