1. I let Hugin Create control points
2. I optimized using following steps (checking at each step that
standard deviation was improving):
1. Positions (incremental, starting from anchor)
2. Positions and translation
3. Positions, translation and view
4. Positions, translation and barrel
5. Positions, translation, view and barrel
3. I previewed the results: things were completely off.
4. I deleted a few control points which were obviously on reflections,
as well as control points which could not work (for example a
control point on the sea horizon or on moving objects such as cars,
beware of boats, some moored boats are actually moving slightly)
5. I added a few vertical lines and a few horizontal lines
6. I reset all images and ran point 3 again: better, but some buildings
were still skewed and some image borders did not match enough to my
taste
7. I added control points on faraway points (characteristic points on
the mountains, faraway buildings...) and removed "duplicated"
control points (control points placed by Hugin which were so close
together that I couldn't see both numbers at the same time)
8. I reset all and ran point 3 again: definitely better
9. I removed all automatically generated control points which were
between 2 other close control points. I deliberately removed more
aggressively control points close (to the camera) than remote
control points, trying to give more weight to the far image. The
reasoning here is that parallax errors will be very frequent because
the camera was moved a lot; because of this, matching both close
objects and distant objects at the same time is impossible, I choose
first if I prefer my images to match in close objects or in distant
objects. Because of your use case, I decided that matching the
horizon was preferable.
10. I reset all and ran point 3 again: what I saw seemed good, except
that at some point I stopped seing the seaward part (and I did not
notice it was missing). Actually, images 4, 5 & 6 are there, but
they are seen from the side. I attach this version as 0_1 - 330_1 -
v1.pto
11. In an attempt to fix things, I tried to add vertical and horizontal
lines in images where they were missing and to add control points
between images 8 & 9, but results were close to the previous one.
12. So I decided to change strategy: I removed all control points on
buildings, keeping only control points on the ground.
13. Because I had eliminated the buildings from the problem, I reasoned
that translation was maybe not a useful parameter and I optimized
using following steps (checking at each step that standard deviation
was improving):
1. Positions (incremental, starting from anchor)
2. Positions and view
3. Positions, translation and view
4. Positions and barrel distorsion (standard deviation was worse
here so that I did not apply this step)
5. Positions, view and barrel
6. Everything without distorsion. I repeated this last step until
standard deviation stopped improving.
14. The result seems pretty good IMO (0_1 - 330_1 - v2.pto)Here is what I would do now: I would have generated the panorama using the option "Normal panorama with layered TIFF output", loaded the result in Gimp or a similar tool and worked with layers and masks in order to keep from each image the best ground level and get straight-looking buildings.
I suggest taking intermediate photos: - between 5 & 6 (not enough overlap),- and between 6 & 7, and 7 & 8 to try to create more control points there (because it is impossible to put control points close to the horizon on those).
Also, maybe taking more than one picture from each place (like you did with 0 & 1 and 3 & 4) would improve the end result. At least it would give you more options in the final Gimp step.
I hope I was clear enough in my explanations. Le 02/08/2024 à 09:10, Sam Rhoads a écrit :
Thanks again David. I will open that PTO file tomorrow and let you know whether or not I would like you to send me that 189 MB file.Of possible interest to everyone, I got a MacBook Pro today and will try using Hugin and my images with it, and tell everyone later what happens.Had sushi for dinner. Sam.On Aug 1, 2024, at 8:10 PM, David W. Jones <[email protected]> wrote: On that panorama, I selected the images in my file manager and ran Hugin's Generate PTO tool. I use Linux, I don't know if Windows has that capability.Then I went to the panorama preview, clicked on the Assistant button, then clicked on the align button, and got a 360-deg panorama.I think if you open the PTO in Hugin, you should get the same pano. Hugin may tell you that alignment or control points have changed, or something like that, but I think that's something you can ignore.I think I added some points manually, because there were a couple of image pairs that didn't have any control points.Adding horizontal lines to the images that have horizons, then running Align again, should level the images in the panorama. I didn't try that in the PTO file I sent. It improved things quite a bit in my first try at the panorama, but that one only gave me a 180-deg panorama.I have a TIFF image of it, if you're interested. It comes to 2274x3494 (not cropped), 189MB. On the left end is one image, then a black area that shades into the next image. I have no idea what caused that.Enjoy your dinner! On 8/1/24 18:48, Sam Rhoads wrote:Thanks David. When my panorama was in that shape, I spent a lot of time with Photoshop “fixing” things. But my real question is whether this one will be “sharper” than the one I produced. Do you think if I open that pto file in Hugin I’ll get the same panorama? I’ll try that in a while. Did you create a tiff image? Right now I have to go buy dinner.Did you let Hugin find control points? Did you add any manually? More questions later. Sam.On Aug 1, 2024, at 6:37 PM, David W. Jones <[email protected]> wrote:I didn't use any horizontal lines in this one. They would have helped fix the wavy horizon.Attaching a screen shot and the PTO file that produced it. Neither of them came out as straight as the original one you produced.On 8/1/24 18:27, Samuel Rhoads wrote:Great David. Please attach it. I'd like to see it.On Thu, Aug 1, 2024 at 6:14 PM David W. Jones <[email protected]> wrote:No problem. I've never made a 360-deg pano. I don't know how to make one at all. So I might simply not be doing it right in the first place. But the second time I tried, I got a 360-deg panorama from it. On 8/1/24 17:39, Samuel Rhoads wrote:I screwed up. I was pretty sure I had only included the *_1 files, but I see that I did include two _3 files by mistake. Sorry 'bout that! But the 12 _1 files: 0_1, 30_1, 60_1 ..., should make a 360 degree pan. On Thu, Aug 1, 2024 at 5:23 PM David W. Jones <[email protected]> wrote: Yes, I used your zip file, the one in the link below. It doesn't have 12 images in it, it has 14. These two images don't have any mountains or ocean in them: 120_3.jpg and 210_3.jpg. The 210_3 image has a part of the same beach that's already covered in the 210_1 image. I think the *_3 images aren't needed, and apparently you removed them from some other zip file you uploaded to Google Drive? I've never made a 360-deg panorama, so I got a 180-degree partial one. On 8/1/24 13:41, Sam Rhoads wrote:David: That’s confusing. The 12 images: 0_1 through 330_1, all have either the ocean or mountains on the horizon. Did you use the zip file that had all 12 images? If some of those 12 images were removed, the panorama wouldn’t have been complete? Sam.On Aug 1, 2024, at 11:48 AM, Gnome Nomad <[email protected]> <mailto:[email protected]> wrote: When I tried the Hugin Assistant, it found control points on all of them. I don't know anything about using Translation. I did eventually get sort-of straight horizon but only after removing two images that were mostly building foundations that had no horizon as part of them.-- David W. Jones[email protected] exploring the landscape of god http://dancingtreefrog.com Sent from my Android device. On Thu, Aug 1, 2024, 11:30 Samuel Rhoads <[email protected]> wrote: Thanks Carl. Any idea why the optimizer tab only shows up then? I spent hours trying to get the optimizer tab to appear There are so many things that I just do not understand. I don’t understand how people learn all these options. SamOn Aug 1, 2024, at 11:25 AM, Carl Ovenschotel <[email protected]> wrote: Indeed it couldn't find points for those images. The Optimizer tab pops up when you have Optimize \ Geometric \ Custom Parameters selected. On Thursday, August 1, 2024 at 2:38:37 AM UTC+2 [email protected] wrote: Carl: Can you tell me a little about your experience? Did Hugin tell you that it couldn’t find any CPs for 120_1 & 150_1? Did the Optimizer tab appear? Did the stitcher report that some images didn’t belong to the set? Sam.On Jul 31, 2024, at 12:31 PM, Carl Ovenschotel <[email protected]> wrote: I tried to make a panorama of your photos but I failed. After years of using Hugin I still don't know what I'm doing. Maybe someone else can give it a go. On Wednesday, July 31, 2024 at 8:45:30 PM UTC+2 [email protected] wrote: To be clear, I am hoping that someone in the community will take the 12 images in this zip file and try to create a panorama using Hugin. When I do that, I get strange error messages that I do not understand. The resulting panorama won’t be satisfactory for SkySafari, but at least I’ll find out what’s causing the errors. Sam.On Jul 30, 2024, at 4:16 PM, Samuel Rhoads <[email protected]> wrote: Trying once again! Forgive an old stupid man, please. 0_1 - 330_1 (2).zip <https://drive.google.com/file/d/1Rx8y_NfMlTnpst-ZdxGfUUkP9kPs2s9B/view?usp=drive_web><Screenshot_2024-08-01_18-32-21.png> <0_1-330_1.pto>--A list of frequently asked questions is available at: http://wiki.panotools.org/Hugin_FAQ---You received this message because you are subscribed to the Google Groups "hugin and other free panoramic software" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. 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0_1 - 330_1 - v1.pto
Description: application/ptoptimizer-script
0_1 - 330_1 - v2.pto
Description: application/ptoptimizer-script
