Added edge threshold cut

skimage/graph/graph_cut.py

@@ -0,0 +1,25 @@
+import networkx as nx
+import numpy as np
+
+def threshold_cut(label, rag, thresh):
+
+    #print [rag.edges_iter(data = True)]
+    to_remove = [(x,y) for x,y,d in rag.edges_iter(data = True) if d['weight'] >= thresh]
+    print "edges to remove",len(to_remove)
+
+    rag.remove_edges_from(to_remove)
+
+
+    comps = nx.connected_components(rag)
+    out = np.copy(label)
+    print "comps",len(comps)
+
+    for i, nodes in enumerate(comps) :
+        
+        for node in nodes :
+            for l in rag.node[node]['labels'] :
+                out[label == l] = i
+
+    #print out
+    #print label
+    return out