I'm processing lots of USGS NAIP imagery which overlaps. if I load multiple files into a QGIS project I can clearly see the edges of each tile being that some tiles have a darker or lighter contrast than neighboring tiles.

by using GlobalMapper I'm able to put a fade around all of the edges of the tiles to basically fade them together. but I'm getting away from that method to create a full script to handle my proccess much easier. is there a way to "fade" or "blend" the edges together using gdal or maybe do some type of histogram correction?

  • It sounds like you are essentially trying to do mosaicing with alpha channel blending. The process for this, and a workaround for a known bug, has been asked and answered before.
    – Kersten
    Commented Jul 8, 2015 at 7:14
  • Thank I actually figured out a way to do it using gdalwarp clip and cblend since all of the tiles overlap by about 800 pixels. Commented Jul 9, 2015 at 5:10
  • Can you post your solution and accept it so the rest of us can benefit? Commented Feb 2, 2018 at 18:22
  • My solution didn't work. Commented Mar 13, 2018 at 5:33


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Browse other questions tagged or ask your own question.