Hi Etienne and Jan,
For what it's worth, I would also use a gdalwarp gauss interpolation method.
I've found that the gdaladdo gauss interpolation provides the best anti-aliased
downsampling, especially for rasters that contain many small nodata holes
surrounded by valid data. Cubic and
Hi folks, just a general question: I opened this thread asking to
implement a few gdaladdo filters in gdalwarp, and am happy to see that
happen now. Would it be possible to add a few new filters to
gdalwarp/gdaladdo? I'm thinking about the gauss filter for gdalwarp, and
the unsharp mask filter
The patch works successfully - it was a build environment problem.
On Mon, Apr 8, 2013 at 3:17 AM, John Twilley math...@gmail.com wrote:
Thank you, Etienne, for writing this code. I greatly appreciate it!
I updated my svn checkout, then applied your patch with no errors. I
tried to warp
I have committed new warping methods average and mode to trunk, this will
be part of gdal-1.10
On Tue, Apr 9, 2013 at 10:01 AM, Etienne Tourigny
etourigny@gmail.comwrote:
The patch works successfully - it was a build environment problem.
On Mon, Apr 8, 2013 at 3:17 AM, John Twilley
Le mardi 09 avril 2013 19:06:28, Etienne Tourigny a écrit :
I have committed new warping methods average and mode to trunk, this will
be part of gdal-1.10
Hi Etienne,
It would be good if you could extend the autotest suite to add tests for those
new warping methods. For that, you can likely
Le mardi 09 avril 2013 20:34:40, Even Rouault a écrit :
Le mardi 09 avril 2013 19:06:28, Etienne Tourigny a écrit :
I have committed new warping methods average and mode to trunk, this will
be part of gdal-1.10
Hi Etienne,
It would be good if you could extend the autotest suite to add
Hi Even,
Thanks for your input
On Tue, Apr 9, 2013 at 3:34 PM, Even Rouault
even.roua...@mines-paris.orgwrote:
Le mardi 09 avril 2013 19:06:28, Etienne Tourigny a écrit :
I have committed new warping methods average and mode to trunk, this will
be part of gdal-1.10
Hi Etienne,
It
On Tue, Apr 9, 2013 at 6:50 PM, Even Rouault
even.roua...@mines-paris.orgwrote:
Le mardi 09 avril 2013 20:34:40, Even Rouault a écrit :
Le mardi 09 avril 2013 19:06:28, Etienne Tourigny a écrit :
I have committed new warping methods average and mode to trunk, this
will
be part of
Thank you, Etienne, for writing this code. I greatly appreciate it!
I updated my svn checkout, then applied your patch with no errors. I tried
to warp my landcover files which use color tables (which is why mode is so
important to me) and they did not work. Here is the output:
Please upload your file to the ticket (or just a small subset if the file
is sensitive, or a way to generate a similar file, or send it to me).
It is probably because of the color table which I have not tested for.
Etienne
On Mon, Apr 8, 2013 at 3:17 AM, John Twilley math...@gmail.com wrote:
I have implemented mode and average warping algorithms, based on those used
in overview creation.
http://trac.osgeo.org/gdal/ticket/5049
This code has been tested on a few datasets (see attachments) with all
datatypes (Byte, Int, Float) but not all cases have been looked into (e.g.
color tables,
Hello Jan,
There hasn't been a lot of response to your question, so I take the liberty
to give you my thoughts, for what they are worth.
My first guess was that you need something like a bilateral
filterhttp://en.wikipedia.org/wiki/Bilateral_filter.
Noise (detail) reduction is combined with edge
Jan,
I can't speak the development request, but you may be able to do some
sharpening using the Kernel object in a VRT. I've used
Coefs-0.111 -0.111 -0.111 -0.111 2 -0.111 -0.111 -0.111 -0.111/Coefs
to apply sharpening to satellite imagery.
And a few years ago I found that using
Perhaps I should clarify a bit what I meant, I haven't had any reactions
until now, positive or negative, and it is important for me.
I use Gdalwarp and gdaladdo extensively for goereferencing and tiling
large historical maps serieses (raster scans). To display them
efficiently, I need to
I'm interested in this feature request as well. Adding the mode resampling
algorithm to gdalwarp would be very beneficial to my projects, right up
there with being able to access the warp API from Python. Is this at all
possible? Should I submit a feature request on Trac, or what? Just let me
Hi devs,
Would it be possible to add the gauss and other interpolations to
gdalwarp? At the moment I georeference large scans to 2000*2000 tiles at
the most detailed scale, and then create 2000*2000 tiles at resolutions
of 2, 4 6 etc times the original scale, using gdaladdo and gauss or
Hi devs,
Would it be possible to add gauss and other interpolations to gdalwarp?
At the moment I georeference large scans to 2000*2000 tiles at the most
detailed scale, and then create 2000*2000 tiles at resolutions of 2, 4 6
etc times the original scale, using gdaladdo and gauss or other
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