[MS4W-Users] Fwd: Remove GDAL overviews from a tiff? (Mark Volz)

[Jeff McKenna]

Hi Mark,

A trick to remove corrupt overviews is to just run 'gdal_translate' on 
the corrupted tif.  Such as the following command:

   gdal_translate corrupt.tif new.tif

If you then run 'gdalinfo' on your new tif, you can see that the 
"Overviews" are removed (and the file size is back to original).

-jeff


-- 
Jeff McKenna
MapServer Consulting and Training Services
http://www.gatewaygeomatics.com/



>
> Hello,
>
> I used gdaladdo in the MS4W / GDAL to create JPEG overviews for a tiff
> image.  I noticed that the adding the overview failed and may have
> corrupted my image.  Presuming that only the overviews are corrupt, is
> there a way to remove the overviews to try to save the "original" image?
>
> Thanks
>
> Sincerely,
> Mark Volz, GISP
> Lyon County GIS Coordinator
> 504 Fairgrounds
> Rd<https://www.google.com/maps/?daddr=504%20Fairgrounds%20Rd,%20Marshall,%20MN%2056258?z=6>
> Marshall, MN
> 56258<https://www.google.com/maps/?daddr=504%20Fairgrounds%20Rd,%20Marshall,%20MN%2056258?z=6>
> Ph:  (507) 532-8218 <tel:%28507%29%20532-8218>
> Fax: (507) 532-8217 <tel:%28507%29%20532-8217>
> http://lyonco.org/
> http://geomoose.lyonco.org/
>
>
>