Require julia 0.7+

Merge pull request #29 from JuliaImages/teh/v0.7

Get package working on 0.7

Fix mean type, dependencies, PriorityQueue constructors

Merge pull request #21 from mauro3/patch-1

Fixes #20

Initial Release

This package contains multiple image segmentation algorithms written in pure Julia:

1. Seeded region growing
2. Unseeded region growing
3. Felzenswalb graph based segmentation
4. Fast scanning
5. Meanshift segmentation
6. Region splitting using RegionTrees
7. Watershed segmentation
8. K-means wrappers for images
9. Fuzzy cmeans wrappers for images

Documentation can be found here.