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Panorama Question (2 images)
Hello to all!.

I just downloaded some panorama software (Panorama Factory). In some way it works really very nice..

There is just one thing. A straight line from left side to the right side, especially in the foreground, becomes a curve. I know this is due to perspective..

But wouldnt it look much more natural if an area similar to the sketches below would be used. Especially the second one would resemble the surface of a cylinder and I think a persective close to what we see in reality could be achieved. The complete frame must remain rectangle of course, so the rest of the frame would be filled with some appropriate colour or some nice pattern. It would of course work only with view angles somewhat smaller than 180 deg. Is there any panoroma software available which can do that?.

Thank youG L.

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Comments (5)

Look at autostitch. Then see if you can try Adobe Elements. I've got both and using the same set of photos they often give me different looking pano's. In elements I think you can change the perspective to a different type..

Have you tried fiddling with the distortion in PP using adobe?.

I'm gonna have to sell some of this stuff so I can buy more stuff! Mummm, more stuff!..

Comment #1

I'm not all that well versed in the perspective thing, but using PTgui, when I point down or up from level and have that sort of stitch, I try to swtich between a rectangular and cylindrical perspective stitch..

One or the other will be closer to what one wants, and then further one can increase the frame around the stitch, to move the stitched image up down in the larger frame to adjust the distortion (to a degree). After that's set, and the image is written, a crop will be needed..

After that, if further perspective correction is necessary, that can be done in PS (such as to correct verticals)..

As for close shorelines (for example) in a 180 deg. view, I haven't figured out how to correct for the curve it takes on..

...Bob, NYC.

Galleries: http://www.pbase.com/btullis..

Comment #2

G L wrote:.

Hello to all!I just downloaded some panorama software (Panorama Factory). In someway it works really very nice.There is just one thing. A straight line from left side to the rightside, especially in the foreground, becomes a curve. I know this isdue to perspective.But wouldnt it look much more natural if an area similar to thesketches below would be used. Especially the second one wouldresemble the surface of a cylinder and I think a persective close towhat we see in reality could be achieved. The complete frame mustremain rectangle of course, so the rest of the frame would be filledwith some appropriate colour or some nice pattern.

Is thereany panoroma software available which can do that?Thank youG L.

No answer to your question here, but like Stainedsilver said, use Autostitch instead of Pano factory..

Saw it mentioned here on one of the forums, does a much better job in stitching, I think..

Ren..

Comment #3

G L:.

In a normal pano the only horizontal line that can be straight is the horizon, or whatever is perpendicular to the axis of rotation. As you note, all other lines will curve due the perspective difference as you rotate the back of the camera relative to the scene. This is "correct" perspective; it looks funny because we can't normally view the world as a combination of views as we rotate out heads. For panos up to about 90 degrees HFOV, you can use a rectilinear projection that will compensate for this and render the horizontals straight. But as the image approaches the 90 degree limit, objects in the picture get stretched horizontally, which can be objectionable depending on the subject..

While the curved lines are a "correct" representation, there is nothing to say that you have to make your pano that way. For creative or personal preference reasons you can have the pano projected in a manner similar to what you illustrate. You would essentially be moving the center portion of you pano up to higher latitudes on a sphere, so that when projected on a cylinder (using a cylindrical projection) the image would warp as you illustrate. Any pano software that has the ability to adjust the location of the panorama before it is stitched would allow you to do this. I know that PTGui and PTAssembler have editor windows that would permit you to easily move the pano around to your liking, and probably other pano packages (Hugin?, AutoPano pro?) would provide this capability as well. It has been a long time since I have used Pano Factory, but I don't recall an easy way to manipulate the pano in this way, but I could be wrong..

It would be easy to download the trial version of PTGui and try it out to see if it does what you have in mind..

Davehttp://www.pbase.com/dsjtecserv..

Comment #4

Thank you all for your quick and helpful answers. I have already downloaded the panorama sotware you recommended and am trying it out..

Thanks againG L..

Comment #5

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