[Gdal-dev] collarclip

[Stephen Woodbridge]

Craig Miller wrote:
> A while back, someone posted to the list that they had written a small
> utility to clip the collars off of their Soviet Topo maps.  I have a few
> spurious DRGs (compressed paletted GeoTiffs) that need their collars clipped
> and was wondering if this utility is available somewhere.
> 
> Thanks,
> Craig
> 
> Craig Miller
> www.spatialminds.com 

Hi Craig.

That would be me. The utility was less than sucessful as an automated 
clipping tool and the code had to be tuned to look for specific patterns 
for a class of images. I did ok identifying some corners but rarely got 
all corners identified correctly.

I have been to busy lately to revisit it. The approach that I finally 
came up with was to create a database if the image files and wrote an 
ajax web application that views the image (these were all gif) and 
allows the user to select the corner points and writes them to the 
database (I have like 16K images to clip eventually). then a wrote a 
perl script that read the corner info from the DB and generated gdal 
commands to clip and reproject the images.

As I said, I hope to get back to this, but have been too busy over the 
last 3 month to even think about it.

-Steve