How to set ‘ignore_label’？

[QL111111]

There is a “ignore” parameter in your code.
lovasz_loss=lovasz_softmax(tf.nn.softmax(logits),labels,classes='all',per_image=False,ignore=ignore_label)
How do I set this parameter?

[jianlong-yuan]

When the image is croped, it need be padded. The padding area is the ignore label.