Pretty new at Hugin...can't figure out how to get images into proper order

[Lucinda Q. Lovelace]

Hi, I have used Hugin a few times in the past, with fairly good results. Currently I am driving myself batty trying to figure out how to do something very simple, actually 2 things--one being, how to rotate images uploaded into the program if that's possible at all...and the other being, how to put Image A to the left or right side of Image B! I have two photos that I need to stitch in a vertical scene. Apparently I can't sit the "higher up" one on top of the other (rotated). So, I tried using the originals that are not rotated. BUT...for some weird reason no matter which way I upload them (A first, B second, or B first and A second) they are out of order. I even went to the listing of the two images and pulled them backwards as you would do with layers in an art program. That didn't work either. I made 5 or 6 control points that seemed to match and thought that would take care of the final output. NOPE. They stitched backwards! Isn't there some simple way to get images lined up so that they can stitch correctly? I'm looking around in vain for some way to maybe drag & drop them into order. In older builds of Hugin I never had that problem. Advice Needed!! Thanks- Lucinda

[Frederic Da Vitoria]

2016-09-28 21:19 GMT+02:00 Lucinda Q. Lovelace <eos.godde...@gmail.com>:

Hi, I have used Hugin a few times in the past, with fairly good results. Currently I am driving myself batty trying to figure out how to do something very simple, actually 2 things--one being, how to rotate images uploaded into the program if that's possible at all...and the other being, how to put Image A to the left or right side of Image B! I have two photos that I need to stitch in a vertical scene. Apparently I can't sit the "higher up" one on top of the other (rotated). So, I tried using the originals that are not rotated. BUT...for some weird reason no matter which way I upload them (A first, B second, or B first and A second) they are out of order. I even went to the listing of the two images and pulled them backwards as you would do with layers in an art program. That didn't work either. I made 5 or 6 control points that seemed to match and thought that would take care of the final output. NOPE. They stitched backwards! Isn't there some simple way to get images lined up so that they can stitch correctly? I'm looking around in vain for some way to maybe drag & drop them into order. In older builds of Hugin I never had that problem. Advice Needed!! Thanks- Lucinda

In the Fast Preview, Move/Drag tab,

- move the images with the left mouse button

- turn the panorama using the right mouse button; or you can try to play with the "Roll" control

--

Frederic Da Vitoria
(davitof)

Membre de l'April - « promouvoir et défendre le logiciel libre » - http://www.april.org

[Lucinda Q. Lovelace]

-------------------------------

I think I found what I need, it's in the  Move/Drag area under 'displayed images' there are boxes with 0 and 1...I figured out how to move the images around using those. It HAS been too long since I used Hugin, lol, some things have changed. Now to try and get the control points in again

thank you

[bugbear]

Lucinda Q. Lovelace wrote:

>
> I think I found what I need, it's in the Move/Drag area under 'displayed images' there are boxes with 0 and 1...I figured out how to move the images around using those. It HAS been too long since I used Hugin, lol, some things have changed. Now to try and get the control points in again

You need to trust Hugin more...

If you do the control points, Hugin will sort everything out for
you automatically (most of the time...)

BugBear

[Krystal]

Well, that was what surprised me... Oftentimes I have used another small pano program that does sort everything out nicely, IF all the ducks are in a row (such as lighting and not too much distortion in original images). That was why I turned once again to Hugin after yonks...i remembered the control points. I did finally get the two images in line that I was asking about, even though they were horizontal rather than vertical. But unfortunately they did not stitch well at all. I would have to know lots more about projection than I currently do. Then maybe it would have gone off well. I have also been advised to take many shots of one scene for better overlapping. This scene had only 2, but I will remember that tip!

One thing is for certain, I had no end of difficulty trying to find control points amid complex tree branches! Simpler scenes like buildings would surely be a better workflow.

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[Frederic Da Vitoria]

2016-09-29 18:51 UTC+02:00, Krystal <eos.godde...@gmail.com>:

> Well, that was what surprised me... Oftentimes I have used another small
> pano program that does sort everything out nicely, IF all the ducks are in
> a row (such as lighting and not too much distortion in original images).
> That was why I turned once again to Hugin after yonks...i remembered the
> control points. I did finally get the two images in line that I was asking
> about, even though they were horizontal rather than vertical. But
> unfortunately they did not stitch well at all. I would have to know lots
> more about projection than I currently do. Then maybe it would have gone
> off well. I have also been advised to take many shots of one scene for
> better overlapping. This scene had only 2, but I will remember that tip!
>
> One thing is for certain, I had no end of difficulty trying to find control
> points amid complex tree branches! Simpler scenes like buildings would
> surely be a better workflow.
>

>> Lucinda Q. Lovelace wrote:
>>
>>> I think I found what I need, it's in the Move/Drag area under
>>> 'displayed
>>> images' there are boxes with 0 and 1...I figured out how to move the
>>> images
>>> around using those. It HAS been too long since I used Hugin, lol, some
>>> things have changed. Now to try and get the control points in again
>>
>> You need to trust Hugin more...
>>
>> If you do the control points, Hugin will sort everything out for
>> you automatically (most of the time...)

Krystal, I don't understand your answer: AFAIK projection is only
about how the stitching will be shown, changing projection should
never have an influence on stitching quality. What matters for correct
stitching is how the pictures were taken (overlap, parallax...) and
software (control points, optimization... but not projection)

[Krystal]

I think possibly my best next step would be to just try again, creating many photos of the scene rather than maybe only 2. Shooting more photos would stand a greater chance of successfully stitching, as this would give more overlapping. Also I probably should back up more so that I could find control points in the background rather than among tree branches... In other words I think I just had a "dud" scene for stitching... But that's OK, no worries, I will keep trying :D

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[Gnome Nomad]

I've done vertical panos of trees featuring a lot of branches. One was on a fairly windy day, too. I usually shoot for 50% overlap. Hugin did a great job finding control points.

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[Krystal]

50 percent..., thanks for that tip, I think my 2-photo effort was not more than 25 percent overlap, if that. Live And Learn!! And "if at first you don't succeed....etc." Seems to be a matter of giving more overlap so that Hugin can locate those control points.

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[Frederic Da Vitoria]

I believe it is more about spreading the control points than finding them. The more the control points between 2 photos are widely spread, the better the results of the adjustments made by Hugin. Hmm, I feel this last sentence is not pretty, I hope my meaning is clear.

Also, if for some reason it is difficult to find precise control points (for example the branches in the trees have moved), then having more control points can help because averaging more errors will possibly yield a more correct result.

[Krystal]

I understand...I was using the tutorial that is always found (green background?) and in it, we are advised to have at least 6 control points...I think you are right, there should be more than that. My images were filled mostly by the trees, and to be perfectly honest I felt I would go blind trying to figure out where to put the control points to match them both up! LOL - And so in the end I didn't have nearly enough. 8^0

Perhaps moving back a bit will also help, my images were fairly close in, hence not much background except for the ground area.

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[Luís Henrique Camargo Quiroz]

    I think tree branches are of the most difficult things to "assemble" (find control points) for a panorama. Wind moves the branches, and, even in a ideal day (not windy), it is a lot of manual work.

    The most difficult part is the carefull examination of two pictures, sometimes rotated (as when you is shotting upward pointing photos, or the zenith), and often the most you see are in the shadow side of the tree, reducing the recognizable features.

    It's a lot of time and work, but the results are well worth of your efforts,

    Luís Henrique

(click to see a larger file)

 
   

2016-10-05 17:09 GMT-03:00 Krystal <eos.godde...@gmail.com>:

I understand...I was using the tutorial that is always found (green background?) and in it, we are advised to have at least 6 control points...I think you are right, there should be more than that. My images were filled mostly by the trees, and to be perfectly honest I felt I would go blind trying to figure out where to put the control points to match them both up! LOL - And so in the end I didn't have nearly enough. 8^0

Perhaps moving back a bit will also help, my images were fairly close in, hence not much background except for the ground area.

On Wed, Oct 5, 2016 at 2:42 PM, Frederic Da Vitoria <davi...@gmail.com> wrote:

I believe it is more about spreading the control points than finding them. The more the control points between 2 photos are widely spread, the better the results of the adjustments made by Hugin. Hmm, I feel this last sentence is not pretty, I hope my meaning is clear.

Also, if for some reason it is difficult to find precise control points (for example the branches in the trees have moved), then having more control points can help because averaging more errors will possibly yield a more correct result.

2016-10-05 20:26 GMT+02:00 Krystal <eos.godde...@gmail.com>:

50 percent..., thanks for that tip, I think my 2-photo effort was not more than 25 percent overlap, if that. Live And Learn!! And "if at first you don't succeed....etc." Seems to be a matter of giving more overlap so that Hugin can locate those control points.

On Mon, Oct 3, 2016 at 3:31 PM, Gnome Nomad <gnome...@gmail.com> wrote:

I've done vertical panos of trees featuring a lot of branches. One was on a fairly windy day, too. I usually shoot for 50% overlap. Hugin did a great job finding control points.

....

--

--
Luis Henrique Camargo Quiroz
http://luishcq.br.tripod.com - http://www.christusrex.org/www2/cantgreg
http://panoramaslh.net/