Convert mask to polygon

[zkyseu]

Hi, I have a question that how you convert the instance mask to polygon in your code? I find that codes used to generate polygons ：

polygons = example['image/object/segmentation'].to_tensor(
        default_value=vocab.PADDING_FLOAT,
        shape=[None, max_points * 2])

but this codes do not contain instance mask from the given label. so how do you convert given instance mask label to a polygon? Thanks!

[saxenasaurabh]

The coco dataset provides the polygons. Please see https://cocodataset.org/#format-data

[gg22mm]

Do you have a more detailed explanation, just switching between datasets?