New answers tagged image-mosaic
Assuming that you are using ArcGIS, here is an option if you don't script and don't mind pushing a lot of buttons.. Create a new empty polygon feature with the projection of your referenced images Edit the polygon to draw a rectangle around the good part of each image individually, excluding the border areas Use this polygon as the mask in 'extract by ...
If the images are scanned images, I think you will need to crop them in order to remove the border. This can be accomplished with any image software or even microsoft paint.
Top 50 recent answers are included