Thanks again for the help. I fear my scans are not very good for the task, but they are what I have for now. For now I have radically shrunk the areas of interest while I find a systemic method for going about this. The image adjustments are promising, and I am trying to find a balance of adjustments that make selections easier. I am half blind (missing the left visual field) and trained as a historian, both work against me just now. When I get an outflow worthy of scrutiny I will repost. Thank You again. I have wanted to undertake this project for some time while I recovered, but I lost computer skills in the stroke also and I am just now getting them back. Your help was awesome! I do not need more detail than your example, but I have an area of a[[roximately one square mile to do.