List of datasets with labeled Planet imagery?

Hi everyone,

I'm a software engineer working with neural networks, and I'm interested in doing a project with Planet labs imagery. I'm looking for labeled data sets, similar to ImageNet. I see in this community thread that there are labeled data sets for ships and planes. I also found a Kaggle contest for deforestation. Are there others? 

I see that for the deforestation data set, the Planet team labeled the training and test data sets by hand. I'm also curious if anyone has had success using image segmentation with Planet imagery, or if they've run into difficulties with automated labeling.

Thanks,

Shane