|Posted on Wednesday, August 07, 2002 - 12:49 pm: |
Is it possible to use this program in order to stitch photos of a vertical element? I took pictures of a building, from top to bottom. I have tried to use PanoramaFactory to stitch them together, but I always get a warping of the image, making the building look like a balloon. I have tried setting the camera properties to Swing camera, but this had no effect. Is it possible to do this kind of stitching with this program?
|Posted on Wednesday, August 07, 2002 - 10:35 pm: |
Yes it is possible to create vertical panoramas using The Panorama Factory, although the method is a little awkward.
Robert Diefenbach, a Panorama Factory user, wrote the following description of the process (reproduced with permission):
Here's the process I followed to make a "vertical panorama" in Panorama Factory (PF). The component images are four horizontal images I'd made in the Painted Church, starting at the ceiling and tilting down with each succeeding shot and overlapping each by about 30%. If I had
been using Quickstitch, I could have brought the four images into four different "rows" of images, positioned one above the other. But PF only provides for one row, so the images needed to be brought into that single row.
When I loaded the four images into PF, they looked like this.
Then I rotated the images 90 degrees counterclockwise. I used a button available in PF to do the rotation, but could also have done that in ACDSee, PhotoShop, or any halfway decent image management program . After rotation, they looked like this.
This gave me four images, arranged in a single row, to be stitched together. Here is the result.
Rotating it back, 90 degrees clockwise, gave this final image: a "vertical panorama."
So that's how you can "stitch vertically" using Panorama Factory.
The Painted Church, BTW, is near Captain Cook on the island of Hawaii
Additional notes from John:
- You should perform the initial image rotation of your imported images with the rotate buttons on Wizard Step 1 or with the rotate commands in the Edit menu.
- You should perform the final image rotation with the Rotate command in the New image menu. You have to exit the Wizard by clicking the Done button before applying the Rotate command.
- The effect described as "warping of the image, making the building look like a balloon" can be seen in Robert Diefenbach's final image. The columns appear to bow outward. This effect is a consequence of the reprojection used by The Panorama Factory to show an image that is much wider than one captured by a conventional camera. This warping effect is explained in more detail in the FAQ Why do straight lines get turned into curves?.
- You may be able to reduce or eliminate the ballooning effect by using the new Perspective projection option on Wizard Step 4. This option was added in The Panorama Factory V4 release.
(Message edited by jstrait on January 31, 2006)
|Posted on Thursday, August 08, 2002 - 9:02 pm: |
Note also that the "ballooning" effect will be the same no matter how many pictures you take. It is a result of a perspective effect that we do not normally notice.
If you stand in the center of a pair of railroad tracks and look first one way and then the other along the tracks, you'll see that they appear to converge in both directions. In other words, they appear farthest apart right in the middle where you are standing.
Believe it or not, this is the same ballooning effect as we see in panoramic photographs. We are just not used to looking in both directions at once!
The degree of ballooning is determined by where you stand in relation to your subject. The effect can be minimized by standing farther away from your subject and using a zoom lens.
Post Number: 3
|Posted on Sunday, October 12, 2003 - 6:00 pm: |
John et al:
I believe the balooning effect can be reduced or eliminated by pre adjusting the perspective of the photos as I did for the "spam can" photo posted under http://www.panoramafactory.com/discus/messages/10/63.html
Post Number: 4
|Posted on Sunday, October 12, 2003 - 6:33 pm: |
Using the photos posted in the discussion of balooning effect, I applied my proceedure, and got what I think would be a solution to the balooning.
Take a look and tell me what you think.
|Posted on Thursday, May 20, 2004 - 7:38 pm: |
But it doesn't seem to be possible to get a quicktime output right?
Or is it?
Post Number: 95
|Posted on Wednesday, May 26, 2004 - 10:53 am: |
I'm sorry to say that you are correct. You cannot generate a Quicktime image from this kind of vertical panorama.
The geometry of this type of image is different from the geometry expected by the Quicktime viewer. I think this may also be true of other viewers (Zoom viewer, PTViewer, etc.)
Images produced this way are either cylindrical or equirectangular (spherical) projections, but the projections are rotated 90 degrees from what the viewers expect. If you were somehow able to get the panorama into one of the viewers, it would not be displayed properly.
I'm sorry, I wish I had a better answer for you.
|Posted on Friday, May 20, 2005 - 11:19 am: |
Have I missed something?
How do I warp a single image? The only way I've been able to do this is to import 2 copies of the same image and set the overlap to 100 percent min and max. Only then can I use the stitch button and get the warp.
Post Number: 187
|Posted on Friday, May 20, 2005 - 11:42 am: |
I'm afraid I don't understand the question. How is this related to vertical stitching? Maybe _I_ missed something. :-)
The Panorama Factory does not provide for warping single images, only for multiple images as part of stitching. The warping is part of the stitching process required to make overlapping images match properly as the camera is turned in different directions.
Why do you want to warp individual images?
|Posted on Friday, May 20, 2005 - 11:59 am: |
John, Thanks for the reply, sorry it was confusing.
I'm trying to make partial qtvr panos from single wide angle images so I would like to use PF to warp to cylindrical and correct some barrel distortion at the same time. Then I can save as QTVR.
My technique of importing 2 duplicate images as described above works fine for me but I'd prefer not to do this as I intend asking others to do it and want to keep things simple.
|Posted on Friday, May 20, 2005 - 12:40 pm: |
Hi John and others
I do apologise. I've only just realised I posted my question under the vertical stitching thread. No wonder it was confusing. This is the first time I've used this forum. Sorry to mess up. Trevor.
Post Number: 1
|Posted on Sunday, July 13, 2008 - 1:12 am: |
Odd... it doesn't support multiple rows, and that's the whole reason I decided to try it. According to the help files:
Required for multi-row stitching in The Panorama Factory.
So you MUST check Spherical as the projection type to stitch-multiple rows seems to mean you can stitch multiple rows IF you click that box... aparantly not.
Post Number: 367
|Posted on Sunday, July 13, 2008 - 10:02 am: |
Starting in V4.0, multi-row stitching is supported in The Panorama Factory with a multi-step procedure described here: Multi-row stitching with The Panorama Factory V4.
This forum thread started long ago, in the time of The Panorama Factory V2. This could explain why it might lead you to believe that multi-row stitching is not possible.