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Re: [PanoToolsNG] Hugin and HDR from a single RAW file

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  • Huy Hoang
    Just try it with a set taken this morning, the sun was very bright and my camera was pointing directly to it so without enfuse, one side would be undexposed
    Message 1 of 7 , Apr 1, 2008
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      Just try it with a set taken this morning, the sun was very bright and my camera was pointing directly to it so without enfuse, one side would be undexposed and the other is super overexposed.
      http://picasaweb.google.com/sillyxone/Panorama/photo#5184409804177189922

      At first, I converted the RAW into a 16-bit TIFF, then fed it to Autopanog and Hugin, no problem at all, but I don't know how to extract different exposures out of the final TIFF file to feed to Enfuse, so it's just sitting there. Beside, I heard that RAW file store in linear mode while TIFF applies the gamma so there are some clipping in the highlight and shadow. I don't think I will follow this direction.

      So, I converted three 8-bit TIFF from RAW for each shot, put those with the same exposure in same directory as an exposure set. Using the same .PTO file for all three exposures, Hugin had no problem creating three identical panoramas at 3 exposures. Enfuse obviously had no problem blending the panoramas together.

      So far so good, I'm happy with the result. Probably I will write a small shell script to speed up the process to make the experiment process easier.

      thanks for the guide,

      --huy



      ----- Original Message ----
      From: Bruno Postle <bruno@...>
      To: PanoTools NG <PanoToolsNG@yahoogroups.com>
      Sent: Tuesday, April 1, 2008 11:22:33 AM
      Subject: Re: [PanoToolsNG] Hugin and HDR from a single RAW file

      On Tue 01-Apr-2008 at 07:39 -0700, Huy Hoang wrote:

      >do you think Hugin is (or will) able to work on 16bit TIFF file?
      >Since Enfuse is part of Enblend package, maybe it would be more
      >useful if Hugin can take the TIFF16, stitch, apply enblend and
      >enfuse altogether.

      Yes you can create 16bit images from your RAW data, stitch them with
      hugin/enblend to 16bit output, and then run this tool that merges
      faked brackets with enfuse.

      Though I don't think you will get the results you are expecting, do
      make sure that your 16bit input images are not clipped and that they
      have a gamma of 2.2.

      --
      Bruno



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    • Keith Martin
      ... My instinct, such as it is, would have been to make 16-bit TIFFs from the RAW file. Is this overkill when Enfusing? k
      Message 2 of 7 , Apr 2, 2008
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        Sometime around 1/4/08 (at 15:57 -0700) Huy Hoang said:

        >So, I converted three 8-bit TIFF from RAW for each shot, put those
        >with the same exposure in same directory as an exposure set. Using
        >the same .PTO file for all three exposures, Hugin had no problem
        >creating three identical panoramas at 3 exposures. Enfuse obviously
        >had no problem blending the panoramas together.

        My instinct, such as it is, would have been to make 16-bit TIFFs from
        the RAW file. Is this overkill when Enfusing?

        k
      • Huy Hoang
        can Enfuse automatically create 8-bit HDR from a single 16-bit TIFF? If so, what s the point of creating fake bracketing files to feed to it? I heard
        Message 3 of 7 , Apr 2, 2008
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          can Enfuse automatically create 8-bit "HDR" from a single 16-bit TIFF? If so, what's the point of creating fake bracketing files to feed to it? I heard Photomatix can do that? May be I should just stitch the TIFF16 with Hugin then feed the output TIFF16 to Photomatix ... nah, I'm all about "poor man's HDR".

          --huy

          --------------------------
          it's not the software that's free; it's you



          ----- Original Message ----
          From: Keith Martin <keith@...>
          To: PanoToolsNG@yahoogroups.com
          Sent: Wednesday, April 2, 2008 3:59:58 AM
          Subject: Re: [PanoToolsNG] Hugin and HDR from a single RAW file

          Sometime around 1/4/08 (at 15:57 -0700) Huy Hoang said:

          >So, I converted three 8-bit TIFF from RAW for each shot, put those
          >with the same exposure in same directory as an exposure set. Using
          >the same .PTO file for all three exposures, Hugin had no problem
          >creating three identical panoramas at 3 exposures. Enfuse obviously
          >had no problem blending the panoramas together.

          My instinct, such as it is, would have been to make 16-bit TIFFs from
          the RAW file. Is this overkill when Enfusing?

          k



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