PCA + Segmentation
Anybody has worked with Principal Component Analysis layers to do segmentation before?
I ran the PCA algorithm and created 3 layers and one of them looks very promising to discern urban boundaries. However, when I use multi-threshold or multi-resolution segmentation it doesn't give me any good objects back. I also tried using the PCA layer as a base for unsupervised classification and I didn't get the results I hoped. Best I could do is to run unsupervised on the PCA layer that I liked and also include another layer (like Red or NIR), then run a segmentation. it's ok but not great.
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