I have orthophotos that are in .sid format. I have converted them to
tif/tfw with the lizardtech software, but they have black borders. I
would like to remove these borders so that I can use the orthophotos
in a tiled mosaic of the whole area of interest. Any thoughts
suggestions, or help would
This is not working, and I am sure that this is my fault. What next?
On Tue, Sep 15, 2009 at 8:46 PM, Travis Kirstine
wrote:
> gdal has a utility called nearblack
>
> http://www.gdal.org/nearblack.html
>
>
>
> 2009/9/15 stephen sefick :
>> I have orthophotos that are in .sid format. I have conv
stephen sefick wrote:
> I have orthophotos that are in .sid format. I have converted them to
> tif/tfw with the lizardtech software, but they have black borders. I
> would like to remove these borders so that I can use the orthophotos
> in a tiled mosaic of the whole area of interest. Any though
Hamish wrote:
> I may be dreaming, but I seem to remember writing a script to do that
> some time ago (maybe March?) to crop the blank edges off the NOAA BSB
> format nautical charts. try searching the archives and wiki.
>
> see also the image classification modules, r.mask, and "g.region zoom=".
So, I found the odd crs that the orthophotos were in used gdalwarp to
reproject the tiffs then wrote a script to bring all of the
orthophotos in and reclassed 0 as NULL, and poof the black border
disappeared. Now I need to combine the red, blue, and green images
into one single orthophoto for disp
> Now I need to combine the red, blue, and green images into one single
> orthophoto for display.
just use d.rgb or GUI equivalent.
If you must, use r.composite to combine them but it is recommended to not
do that if you can help it due to ...
> What would you use the three color bands for anyw
