created dedicated method to get intersection
created dedicated method to get intersection

crs4/ome_seadragon,crs4/ome_seadragon,crs4/ome_seadragon,lucalianas/ome_seadragon,lucalianas/ome_seadragon,crs4/ome_seadragon,lucalianas/ome_seadragon,lucalianas/ome_seadragon