Outline forground in ECW
Sorry in advance! I am probably not using the correct terms for this, lol. I have an ECW that basically contains a potato shaped blob of land. I need to get an outline of the landmass (excluding the background) and save that as a shape file. I have attempted to use BBox/Coverages but the outline was very rough and included some of the background and excluded some of the foreground. Any ideas on how I can get an outline of the landmass?