cityscapes annotations problem

[jxlijunhao]

Hi,
I'm not understand why you set all instance id to 1,
cleaned_db_instance_annotation = np.stack(cleaned_db_instance_annotation, axis=2) instance_annotation = cleaned_db_instance_annotation.copy() instance_annotation[instance_annotation != 0] = 1

[Wizaron]

Hey,

instance_annotation is a numpy array of shape (image_height, image_width, number_of_instances) and stores instance annotations as a one-hot vector at each channel.
semantic_annotation is a numpy array of shape (image_height, image_width) and stores semantic class indexes.

cleaned_db_instance_annotation at line 149 is a numpy array of shape (image_height, image_width, number_of_instances) and each channel stores instance annotations with their semantic class index.

Therefore, I converted cleaned_db_instance_annotation to one-hot instance_annotation at line 153.

Also, I did not experiment with cityscapes dataset yet. There may be bugs in dataset creation procedure.

Thanks.