I have a series of Ortho Images for a corridor which have a white color outside the boundary of the actual Topo area.
I'd like to change this to black to match my screen background.
Is there a way of doing this without creating clip boundaries?
I imagine not as some of the actual topo pixels will be white?
Is my best option getting the images changed by the Aerial LiDAR company to a black background?
You could set the white as the transparent color in the Raster Manager. This would also make any white in the topo area transparent as well unfortunately
Thanks svancleave. I did manage to get this to work. For those of you who wish to do this, I have many ortho photos and each photo has to be adjusted individually. Click on the file name, click right, go to Transperancy, this opens the panel as shown. Adjust the slider on the right of the color bar to the top (white), and click ok. I noticed minimal changes to the actual topo area, and if you look at the boundary between photos you can examine the change. This is what I needed.