Hi Chaitanya,
thanks, i'll try that when I get back to it tomorrow.
But: I guess I will have to add -vrtnodata aswell, hopefully it will add
pixels to the mask ?
I have already converted all the source TIFFs to lossless compressed
GeoTiff (which don't
produce undesired JPEG artifacts), and made
Oyvind,
One easy method is to create a vrt file with an alpha band for the original
tiff. You can use this to create a compressed raster file that will be
transparent at nodata pixels.
gdalbuildvrt -addalpha
http://www.gdal.org/gdalbuildvrt.html
On Tue, Apr 3, 2012 at 5:26 PM, Oyvind Idland wro
Hello,
I got one problem: I have a bunch of uncompressed TIFF tiles, which I am
converting to compressed GeoTiff. I would
like to mask away the rgb(0,0,0) values.
However, when I use NODATA on my VRT dataset, there are JPEG artifacts
around the edges when rendering.
Is it possible to generate a
Patrick Cannon wrote:
Hello,
Has anyone used the GDAL mask feature?
I would like to mark part of an image as transparent. The area is defined
as a polygon.
I have been trying to find documentation or examples on how to use the mask
feature but, so far no luck.
Could someone please point
Hello,
Has anyone used the GDAL mask feature?
I would like to mark part of an image as transparent. The area is defined
as a polygon.
I have been trying to find documentation or examples on how to use the mask
feature but, so far no luck.
Could someone please point me in the right direction?
