Clarify Segmentation A workflow

[danielmwatkins]

The Segmentation A algorithm has two main parts, which currently get separated into a few functions.

1. k-means segmentation
2. binarization of the k-means result
3. morphological operations on the binarized result
4. merging the binarized k-means result and the morphological operations result

There also seems to be an issue where landmask pixels get unmasked, so on the way toward clarifying the algorithm we can address that issue.

[danielmwatkins]

Here is an image with the Julia output on top and the matlab output underneath:

You can see a couple things here: first, both the Julia and Matlab versions have issues. They both have areas of black pixels where the landfast ice is. The julia version has some differences in the central Arctic.

We can also note that it would be wise to only compare the ocean regions - the percent agreement over land doesn't matter.