New feature: Shear + Trapezodial + Rotate

[Stephan Weber]

Hi,

we have so far 3 numerical transformations, which I often use for small rotations. However, I think a clean shearing is not available.

The best would be a new entry for shearing (maybe also for trap) in which the horizontal and vertical shearing angle can be defined.

I personally, made a little implementation for this in my own picture editor program, and the easiest way for users to do ALL of this (rot, shear, trap or any mix) is actually to define an angle for each edge of the picture (top, left, right, bottom).

If all angles are identical, you get a clean rotation, if you have the same angle e.g. for left and right you get a shearing, etc.

And if e.g. in your pano only the trees or buildings on the left are not vertical, then you need only a correction angle for the left edge.

Many standard picture editors can do a linear transformation based on 4 edge points, but making this with 4 angles (optionally with an expansion factor) is often much easier as you can see from these examples.

These ugly things happen usually for extreme panos or hand-held panos, but it would be nice to do this quickly and directly in PTGUI.

Bye Stephan

[PTGui Support]

Hi Stephan,

I'll add this to the wish list.

Kind regards,

Joost Nieuwenhuijse
www.ptgui.com

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