Adding transparency to grayscale image using GDAL?

Asked Jan 19 '17 at 17:14

Active Jan 20 '17 at 02:00

Viewed 104 times

I have some binary mask image with 255 and 0 values and I want 0 values become transparent.

How can I do this?

Seems it work, but I'm not sure if it the best method:

gdal_translate -a_nodata 0 -of PNG src.png dst.png

edited Jan 20 '17 at 02:00

PolyGeo

asked Jan 19 '17 at 17:14

mrgloom

1

gdal_translate with a_nodata is the best way. – Logan Byers Jan 19 '17 at 18:55
@LoganByers, please expand your comment into an answer explaining why a_nodata is the best way. – Fezter Jan 19 '17 at 23:26

0 Answers0