HDR ghosts in PTGui 12

[Tom Sharpless]

Normally I let PTGui merge hdr image sets, but it has no automatic deghosting. In this pano, the ghosted people on the lower floor are perfectly well represented by the longest exposure alone, so I thought I could just suppress the other images by masking them or marking them "exclude from panorama". PTGui lets me do both of those things, however neither has the desired effect. Am I missing a trick, or do I need to merge before stitching?

[PTGui Support]

Hi Tom,

I'm sorry but using masks for deghosting is not possible currently; the
masks are used for blending only. The masks of the bracketed images are
combined, then the blender will ignore any areas covered by masks in at
least one of the bracketed sets.

Being able to mask out areas in individual bracketed images would
require more elaborate HDR merging, currently this would result in hard
visible edges around any masked areas.

But I think entirely excluding on of your bracketed images should work
(although this would be a very coarse way of deghosting). In Exposure /
HDR choose 'HDR workflow: Merge to HDR, then blend'.

Kind regards,

Joost Nieuwenhuijse
www.ptgui.com

On 12/06/2022 18:18, Tom Sharpless wrote:
> Normally I let PTGui merge hdr image sets, but it has no automatic

> deghosting. In this pano, <http://tksharpless.net/VCAM/index.html> the

> ghosted people on the lower floor are perfectly well represented by the
> longest exposure alone, so I thought I could just suppress the other
> images by masking them or marking them "exclude from panorama". PTGui
> lets me do both of those things, however neither has the desired effect.
> Am I missing a trick, or do I need to merge before stitching?
>

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[Tom Sharpless]

Thanks, Joost.  

Yes, excluding all but 1 exposure worked in "merge-then-blend" mode. I normally use blend-then-merge.