In my classified raster image I have 3 different green colors and there are also other colors in the image. I would like to remove the green areas or make them transparent. Is there a way to do this automatically for multiple images?
Solved
Removing green colored areas in Raster
Best answer by gio
@fluusha
You can remove or replace colors using a rasterexpression evaluator.
4 expressions, one to grab the colors and replace with transparency channel and 3 to "preserve" the rest.
Like this.
Here green RGB 153,192,30 is removed and replaced by full transparency.
Turning
in
You can have it read content of a folder dynamically and process the images in those folders.
+19- Contributor
Can you define the "green" with some specific R, G, B values or ranges of R, G, B?
+15- Contributor
- Best Answer
@fluusha
You can remove or replace colors using a rasterexpression evaluator.
4 expressions, one to grab the colors and replace with transparency channel and 3 to "preserve" the rest.
Like this.
Here green RGB 153,192,30 is removed and replaced by full transparency.
Turning
in
You can have it read content of a folder dynamically and process the images in those folders.
Reply
Most helpful members this week
Enter your E-mail address. We'll send you an e-mail with instructions to reset your password.