overlapping low and hi rez images

[Steven Nilsen]

Hi,

I've got a rather large panorama (22 photos) that I've been trying to stitch correctly, for a long time now.  I've been learning a lot about hugin as I keep at it, but I've hit a wall.  I have a few gaps in the panorama that are only filled by low-res no-zoom images that covered the whole area with a few shots.  

When I incorperate any of these lower resolution files, I lose substantial detail from the remaining parts of the image.  I have made sure to mask and crop the low res files to only add data to the image in the locations I want, but I still get the issues.  All I need to do to get the change is either include them or not from the incorperated images, I do no re-optimizing or photometric changes, but I lose resolution when the unmasked parts are added.  (JPEG of the images massive - 90 Mb for just sections to make the point, too large to attach)

Any suggestions on how to proceed?

Thanks,

Steven

[Terry Duell]

Hello Steven,

Are you using a new lens for your low res fillers?
Do you see the same problem if you use only one image each side of a gap
and the low res filler?
Would this partial project be small enough to make available?

Cheers,
--
Regards,
Terry Duell

[Bruno Postle]

On Wed 15-Oct-2014 at 13:10 -0700, Steven Nilsen wrote:
>
> I've got a rather large panorama (22 photos) that I've been trying
> to stitch correctly, for a long time now. I've been learning a
> lot about hugin as I keep at it, but I've hit a wall. I have a
> few gaps in the panorama that are only filled by low-res no-zoom
> images that covered the whole area with a few shots.
>
> When I incorperate any of these lower resolution files, I lose
> substantial detail from the remaining parts of the image. I have
> made sure to mask and crop the low res files to only add data to
> the image in the locations I want, but I still get the issues.

I would be tempted to align everything as a single panorama, but
stitch each set of photos as a separate image (by turning on/off
photos and stitching the project twice).

I'd then assemble them as layers in an image editor, with the
high-quality layer on top and the low-quality layer filling in the
holes behind.

I would then blend the two by feathering the edges of the
high-quality layer - enblend seams are not very pretty when blending
a sharp image with a blurred image, so the simple image editor
approach will give nicer results (in this case).

--
Bruno