Semantic masks values

[GiuseppeT00]

Hi there, first congrats for the amazing work behind the deliver dataset. I would ask you a question about the semantic masks. You have 25 classes, so we expect values in the range [0, 24] in semantic masks, but I see values in range [0, 25].

• Why in the dataset class (deliver.py file), you do sample['mask'][sample['mask']==255]=0, and then sample['mask']-=1?
• I assume that 255 label is for background, since you ignore it, it's right? Thank you in advance!

[1404561326521]

您好，首先祝贺交付数据集背后的出色工作。我想问你一个关于语义掩码的问题。您有 25 个类，因此我们期望语义掩码中的值在 [0, 24] 范围内，但我看到的值在 [0, 25] 范围内。

• 为什么在数据集类（deliver.py 文件）中，您执行sample['mask'][sample['mask']==255]=0，然后sample['mask']-=1？
• 我认为 255 标签是背景，既然你忽略了它，是对的吗？ 先感谢您！ [0, 25]表示的应该是从0到24，不包括25

[jamycheung]

Hi, thanks for your interest.

The dataloader of the DELIVER dataset is correct. You can check that in deliver.py.