« Return to Thread: Clouds in hi resolution pano (Celeste 2.0?)

Re: Clouds in hi resolution pano (Celeste 2.0?)

by rlhelinski :: Rate this Message:

This is a good idea, but IMHO it would require the user creating a
mask for each image so that the tools can treat the different regions
separately, perhaps by using alpha channels. Perhaps this could be
manifested in something like the fuzzy select tool in the GIMP.

Also, think of the boundary conditions that could be a show stopper
for something like this. What if you move the sky in the second row to
line up with the first row, but you end up with an area for which you
have no information. In the screenshot, I think this area would be to
the left. What should the tool do then?

Ryan

On Jun 22, 4:16 am, Yuv <goo...@...> wrote:

> Jim Watters wrote:
> > Wow! sounds complicated. I must admit my normal panorama shooting
> > process does not require using Celeste.
>
> > Wouldn't the simple solution be for Celeste to remove points if there is
> > a mixture of cloud and non-cloud points joining two images.
>
> I think I did not explain myself properly. The problem is not bad CP
> on moving clouds. It is the moving sky in relationship with the static
> subject. It could be also a sky of star.
>
> Look at <http://groups.google.com/group/hugin-ptx/web/Screenshot-Fast
> %20Panorama%20preview.png>
>
> The static scene stitches perfectly, but the background sky has moved
> between the row containing the tip of the clock-tower and the row
> below it.
>
> The easy way out is to fiddle with the clone tool or some other image
> editing tool around the seam between the two rows.
>
> The smart way out IMO would be to mask out the static features (the
> top of the clock-tower) from the top row and then shift to correct for
> the cloud movement over time. Probably shifting the whole row is good
> enough, though shifting each composing image proportionally to the
> timestamp difference may be more accurate. This will leave much less
> fiddling in the image editor: mostly where the sky has moved behind a
> static feature, and a little also where the clouds have changed shape
> over time (easy, because no accuracy is required).
>
> Yuv

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« Return to Thread: Clouds in hi resolution pano (Celeste 2.0?)