Thanks for all the suggestions. The following website:
http://sites.google.com/site/bpederse/caliwms gave me an idea of how to
treat the JPEG artifacts.
Going back to our previous discussion, the OpenJPEG implementation of
JPEG2000 creates very clean (at the boundary of data/nodata) compressed
ima
Le samedi 29 janvier 2011 22:40:20, Marius Jigmond a écrit :
> The link should work for another day or so (automatic server purge). I
> can re-upload it if you don't get the chance to download it. Warning:
> 1.2GB.
> https://www.twdb.state.tx.us/filetxfr/emaillinkdownload.aspx?id=&FileTransf
> erID
The link should work for another day or so (automatic server purge). I
can re-upload it if you don't get the chance to download it. Warning:
1.2GB.
https://www.twdb.state.tx.us/filetxfr/emaillinkdownload.aspx?id=&FileTransferID=289562464
-marius
--
Sent from Ubuntu
On Sat, 2011-01-29 at 22:25
Le samedi 29 janvier 2011 22:17:45, Marius Jigmond a écrit :
> Just realized that earlier I hit the wrong reply button (apologies).
>
> The COPY_SRC_OVERVIEWS yielded a wild result. Here's what I did:
> 1. gdaladdo -ro s70rgb321.tif 2 4 8 16 32 64 128 (note: input GTiff is 3
> band with nodata=0 a
Just realized that earlier I hit the wrong reply button (apologies).
The COPY_SRC_OVERVIEWS yielded a wild result. Here's what I did:
1. gdaladdo -ro s70rgb321.tif 2 4 8 16 32 64 128 (note: input GTiff is 3
band with nodata=0 and no mask)
2. gdal_translate -co COMPRESS=JPEG -co TILED=YES -co JPEG_
Le samedi 29 janvier 2011 20:28:02, Marius Jigmond a écrit :
> Thanks Even. I ran some more tests but that didn't quite work for me. I
> still get those noisy pixels after gdal_translate (in QGIS I set value 0
> for transparency and those pixels stand out). However, I noticed the
> following:
>
>
Le samedi 29 janvier 2011 15:47:43, Marius Jigmond a écrit :
> Hi Everyone,
>
> I am having some trouble figuring out why adding JPEG compression to a
> RGB GeoTIFF results in Nodata pixel triplets becoming data pixel
> triplets. Is this expected behavior due to the noisy nature of JPEG
> compress
Hi Everyone,
I am having some trouble figuring out why adding JPEG compression to a
RGB GeoTIFF results in Nodata pixel triplets becoming data pixel
triplets. Is this expected behavior due to the noisy nature of JPEG
compression or to the fact that these are border Nodata triplets? I know
certain
