You can make the black surrounds to your warped image transparent by
right clicking on the layer, choosing properties, then selecting
Transparency. Add a new entry to the Transparent Pixel List using the
button with the star, then put 0 in for Red, Green and Blue (or 255 for
white backgrounds).
I'm trying to geo-reference some rasters.
I'm not sure which algorithm to use to get maximum match with known
GCPs, these rasters need to be distorted a lot. I thought tps and cubic
would be best. Can anyone tell me which algorithm is best?
Also, when the raster is placed(georeference complete
