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For questions related to the U-net, a neural network proposed in "U-Net: Convolutional Networks for Biomedical Image Segmentation" (2015) by Olaf Ronneberger et al. for semantic segmentation.
3
votes
Accepted
What is the role of skip connections in U-Net?
You should checkout the original resnet paper which popularized skip connections, or shortcut connections, in the modern literature. See Related Work Section 2 in the paper.
Basically though, residiua …
1
vote
Semantic segmentation CNN outputs all zeroes
Similar to other answers, I don't know Matlab that well but you could try the following steps to debug your problem.
Make sure you can overfit to a single instance
from your dataset, pull out a single …