I have a very old GDAL based tool I wrote that creates JPEG thumbnails
for GeoTiff's. Since the GeoTiff's can be any size and I used a perl
script to compute the aspect ratio so I can center a reduced size image
in a square thumbnail.
I'm looking for any suggestions as to how I can look into
Le vendredi 13 avril 2012 19:53:41, Ethan Alpert a écrit :
This has been running for years. Recently a customer who receives these
started scanning the JPG's for security threats. Turns out that the
JPG's I've been writing have garbage data after the JPEG EOI marker.
This is not garbage,
Ok why does this not happen with multi band jpgs?
From: Even Rouault [mailto:even.roua...@mines-paris.org]
Sent: Friday, April 13, 2012 1:13 PM
To: gdal-dev@lists.osgeo.org
Cc: Ethan Alpert
Subject: Re: [gdal-dev] Problem with garbage bytes of data after EOI marker in
single band JPEG
Le
Ethan,
It only happens if there appears to be a valid mask on the source
image that gets copied by gdal_translate in a CreateCopy() call to the
jpeg driver. There are various reasons a source might or might not
have a mask.
Best regards,
Frank
On Fri, Apr 13, 2012 at 2:31 PM, Ethan Alpert
