ECW reprojection

BobsnoopyBobsnoopy Global Mapper UserPosts: 3
edited March 2015 in Projection Questions

I'm quite new to GM, and already facing a question:

I've converted Geotiffs to ECW, and that worked fine. My Client now asks me the same ECW files in a different projection. I've used the Configure tool for that, quite straightforward. Now, I need to save those new files, but I couldn't find any way to do that without using the export tool, and choosing a 1:1 ratio for compression. Anyway, it calculates a new compression, so:

- Is there another way to do so without re-compression of the ECW?
- Will I have any quality loss from the export and re-compression - should I start from my TIFF files again to prevent any quality loss? It is quite a time consuming operation, so I wish I had not...

Thanks for your help!



  • BobsnoopyBobsnoopy Global Mapper User Posts: 3
    edited March 2015

    It seems that the quality of the generated reprojected files is OK, but those are more than twice larger than the original ECW, so that's not good at all...
  • BobsnoopyBobsnoopy Global Mapper User Posts: 3
    edited March 2015
    I'm still stuck with that question...
  • SidoySidoy Posts: 16
    How did you do your reprojection sir?
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