Straighten vertical lines

[chris...@caribsurf.com]

Would it be possible to add a feature that would make straightening a pano much easier. I saw this on another software program and wish that PTGui would also have it. That is, a tool that you use to connect a line in order to trace a known vertical. Once you do this on a lamp post, edge of a building or wall, the software automatically snaps the pano to exactly vertical! Simple. Can you please add this feature?

http://www.barbados360.org/

[Franco Furger]

On Saturday, September 6, 2014 6:35:50 PM UTC+2, chris...@caribsurf.com wrote:

Would it be possible to add a feature that would make straightening a pano much easier. I saw this on another software program and wish that PTGui would also have it. That is, a tool that you use to connect a line in order to trace a known vertical. Once you do this on a lamp post, edge of a building or wall, the software automatically snaps the pano to exactly vertical! Simple. Can you please add this feature?

http://www.barbados360.org/

I would second this feature request. If there is one problem I run into quite often is disconnected (more or less) vertical lines. Clearly, it also has to do with picture quality, but still. One doesn't always have a tripod and a panorama head handy.

-Franco

[chris...@caribsurf.com]

Thanks for the endorsement of my suggestion. I think you are talking about something a bit different however. Sounds like you need a tripod for sure. If not, try adding control points to those verticals. Finally, if the verticals are misaligned due to lack of tripod, try the mask tool. Force (green mask) the entire vert you want to show. You can make up the difference in another part of the scene where the hard line stitching is not as crucial like a flat wall or shrubs. I personally never release a pano unless it has a dead straight horizon. But I still have trouble with the verts. My suggestion (not my idea mind you) would make this process easier, faster and much more precise. Seams like a simple no-brainer upgrade.

http://www.barbados360.org/

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[Willy Kaemena]

There is absolutely no need for a leveled tripod !!!

Set simply 2-3 vertical control points and the pano will be 100% leveled...... If you have any vertical structures around.:-)

A leveled tripod might be useful in a rolling hills landscape without vertical features and no clear visible horizon

Sent from my iPhone 

Willy Kaemena

  

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[chris...@caribsurf.com]

True, tripod is not needed. But if you are careless about how you hold the camera for each individual shot, it could get messy. Would you expand on the 'vertical control points'? It sounds like to feature I was asking about. That would be a great help.

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[John Houghton]

On Sunday, September 7, 2014 1:22:14 PM UTC+1, chris...@caribsurf.com wrote:

But I still have trouble with the verts. My suggestion (not my idea mind you) would make this process easier, faster and much more precise. Seams like a simple no-brainer upgrade.

I've never had any trouble using the vertical line control points for levelling a panorama.  It is also quick and very precise.  It only takes around 40 seconds, so there's not much scope for saving a significant amount of time by drawing lines instead.  You still have to click two points on each of at least two vertical features.  Moreover, one has the option when using the optimizer of enabling the vertical line control points to contribute to the general process of aligning the images with each other as  an alternative to simply levelling the panorama without affecting the alignment of the images with each other.

John

[Willy Kaemena]

Have a look here at the examples

http://www.kaemena360.net/Forenfotos/360-Cities-Vertical-Alignment-of-Panoramas-with-PTGui.pdf

Sent from my iPhone 

Willy Kaemena

  

[Jim Watters]

On 2014-09-07 8:01 AM, Franco Furger wrote:

If there is one problem I run into quite often is disconnected (more or less) vertical lines. Clearly, it also has to do with picture quality, but still. One doesn't always have a tripod and a panorama head handy.

-Franco

If the lines are vertical, then vertical control points can be used to align the two images. If there are straight lines that are not vertical or horizontal then there is the option to add straight line control points (CP type = new line) and Optimize using Panorama Tools Optimizer.

This was the last feature of Panotools that has not been added to PTGui. PTGui now has many features that Panotools does not support, like Viewpoint correction. Those features can not be used with Panotools optimizer. Remember straight line control points will try to force the line to be straight in the output projection. So this works best for Rectilinear images not Equirectangular panoramas.

Some day I might use my own advise and restitch this pano and get rid of all the broken lines.
https://www.360cities.net/image/new-brunswick-camplain-mountain

But I am still hoping that this feature will get added and work even if the output projection is Equirectangular.

-- 
Jim Watters
http://photocreations.ca

[DennisS]

PTGui already has this feature. Go to the control point tab. Select the same image for the left and right windows. Click on the top of the vertical feature in the left image then click on the bottom of the vertical feature in the right image. This is no more difficult than drawing a vertical line.

 

When I do monopod work I manually edit the project file to include vertical control points. Most of the work I do does not have any vertical features. Editing the project file takes less than 30 seconds and is part of my normal workflow.

 

Dennis