Double images on some images after Detect  

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davidmedina
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Double images on some images after Detect

by davidmedina » Tue Jan 03, 2017 5:19 pm

I am new at this and on the trial. The images were shot with the SonyA7II and 55mm f1.8 at f11.

After running detect some of the images shows a superimposed image. I have to click on the green icon for Preview to fix it. and If I create the actual pano, the pano is fine. (see attached image.

I have tried 5 panos and it happened in 3 of them.
I ran the same panos in Photoshop and on PTGui without any problems.

Why is doing this? What am I doing wrong?

Thanks
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Annis
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Re: Double images on some images after Detect

by Annis » Tue Jan 03, 2017 5:28 pm

Hello and welcome to the forum,

Before rendering, your images aren't blended unless you activate quick preview.

When they aren't blended, areas where the panorama isn't stitched well (because of lack of details, repetitive patterns or parallax) or with objects in movement across several photos (people, cars, boats etc) will show up as ghosts or doubled.

So you should check the control points between those images to work on the stitching to see if it can be improved, or you could end up with stitching errors at the end.

http://www.kolor.com/wiki-en/action/vie ... ck_Preview
http://www.kolor.com/wiki-en/action/vie ... nts_Editor

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Re: Double images on some images after Detect

by davidmedina » Tue Jan 03, 2017 6:18 pm

Yes, I can see now that it is messing up the stitching.

Like I said, I am new at this and I am evaluating various Pano software to decide which one should I buy. I am glad that the software shows visually the mistakes, but I have no idea how to fix that or keep it from happening. I wish there were a series of video tutorials that would help me.

As far as stitching quality, what should I be looking for? This pano tells me is 2.94

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Re: Double images on some images after Detect

by Annis » Wed Jan 04, 2017 2:01 pm

The RMS is only an indication of the quality of the control points that Autopano considers correct, you need to check the stitching with your eyes too.
Have a look at out page on the RMS: http://www.kolor.com/wiki-en/action/vie ... _RMS_value

As for improving stitching, well the first thing to consider is the shooting before stitching. How did you shoot the panorama? What type of panorama is it?
What camera, what equipment? Did you use a pano-head?

And if you can't reshoot and the issue is caused by failed shooting, then the best you can do is try to compensate as best as possible, because parallax can't be fixed.
To compensate, you need to add or remove control points between the faulty images, to see if the stitching can be improved.
You can also use the Masking Points in Autopano Giga to control the antighosting.

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Re: Double images on some images after Detect

by davidmedina » Wed Jan 04, 2017 5:13 pm

I used a Sony A7II with the Sony/Zeiss 55mm f1.8. Used the Really Right Stuff PG-01 Pano-Gimbal head on a 3 legged Thing Equinox Albert tripod. The lens and the Pano head were adjusted for parallax.

It is not ghosting per se the biggest problem was that the stitching AutoPano Gida did was bad. It cut out a session of the bridge. I only ran into this problem when using AutoPano Giga.

The exact same pano was run through Photoshop and PTgui and on both cases were process perfectly. PTgui preview was on the money. Why the same files would work right on PS or PTgui but failed in AutoPano Giga? That is why it leads me to believe that there must be a setting that need to be change so AutoPano Giga "see" the files like the other apps see it.

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Re: Double images on some images after Detect

by Annis » Wed Jan 04, 2017 9:05 pm

Then the stitching could be difficult because of low details or repetitive patterns.

First, before stitching make sure the images were detected correctly:
Then, you can increase the quality of detection to high.

http://www.kolor.com/wiki-en/action/vie ... p_Settings

Can you share your images?

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Re: Double images on some images after Detect

by davidmedina » Mon Jan 09, 2017 6:15 am

Yes, I love to share the images. How do I do it?

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Re: Double images on some images after Detect

by Annis » Mon Jan 09, 2017 10:22 am



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