Hot answers tagged transparency
I found a solution to my problem: In the transparency tab use the mouse selection tool to add a value from the screen by interactively clicking on a pixel. This will automatically add a new line in the table to the left showing the band characteristics of this pixel. Clicking on apply will then set to transparent all the pixels in the raster with the same ...
See the 'Transparent pixel list' under the Transparency Tab. You could set the ranges for your white pixels in this list and give a 100% transparency.
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