AfterShot Pro Perspective Correction [zPerspector Plugin]

[Tadjio]

Now that I have tried the zPerspector Plugin and compared it with Perspective Correction in PaintShop Pro, I think it is great.
Attached is a quick ASP sample of Sherborne Abbey that I tried in both programs.

Sherborne Abbey AfterShot Pro Perspective

The controls are very different in use compared with PSP, which relies on dragging the corners, but I think they work very well.
My only concern is that in PSP I usually have to apply a 'Deform', eg reduce the Height to 95%, to get the right perspective, but I don't know how to do this in ASP. Any suggestions?

[DaveQ]

A GREAT Plug-in! I have run a couple of images through it and it performs fantastically. Thank you so much.

[andysalay]

My only concern is that in PSP I usually have to apply a 'Deform', eg reduce the Height to 95%, to get the right perspective, but I don't know how to do this in ASP. Any suggestions?

Unfortunately (if the plugin is more or less unchanged port from B5), there is no such function.
I have a discussion with TinTin in the past, I would welcome nonlinear resize in zPerspector.

Because by intensive perspective correction the relative size of some objects is changed - quite noticeably, I think this can be corrected by nonlinear resizing.

Non linear resize tool example

Please note the uneven resize of upper and lower half of the image. This is normal and expected of course.

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But after precise application of non linear resizing, the differences should be eliminated. And because on my example the zPerspector settings are symmetrical according to vertical axis, after perspective correction I can use resize along this vertical axis.

I do not have corrected preview, because I realized the example software is somewhat lame and does not enable to set pivot point of resize.
But it should be obvious from the link, what the software does.

What do you think?

Regards,
Andy Salay

[bananahead]

What about if you change all four vertical sliders equally ? (Andy has just changed the top two)

[Tadjio]

My only concern is that in PSP I usually have to apply a 'Deform', eg reduce the Height to 95%, to get the right perspective, but I don't know how to do this in ASP. Any suggestions?

Unfortunately (if the plugin is more or less unchanged port from B5), there is no such function.
I have a discussion with TinTin in the past, I would welcome nonlinear resize in zPerspector.What do you think?
Regards,
Andy Salay

I read through your links and I think what you are looking for is PaintShop Pro as an External Editor
PSP has extensive Pick/Deform and Warp Tools - here is an example of the Pick Tool dialogue:

PSP Pick/Deform Tool

In practice I only adjust either the ScaleX(%) or ScaleY(%) to say 95% until the result looks right!

[bobm185]

I'm new to ASP and Bibble plug-ins - so I hope you don't mind this question. I've installed the Corel plug-ins (with the .afzplug extension) without any problems. I can't install the Bibble plug-ins (.bzplug). How are you checking out the zPerspector plug-in in ASP? Any help would be appreciated! Bob

[DaveQ]

I'm new to ASP and Bibble plug-ins - so I hope you don't mind this question. I've installed the Corel plug-ins (with the .afzplug extension) without any problems. I can't install the Bibble plug-ins (.bzplug). How are you checking out the zPerspector plug-in in ASP? Any help would be appreciated! Bob

Tintin provided the download link on the previous page: http://support.bibblelabs.com/forums/vi ... 98&t=19780

[bobm185]

Thank you DaveQ. I missed the detail and assumed it referred to the Bibble version. I got my "af" and "b" extensions mixed up. Thanks again - Bob

[Tadjio]

Coming to ASP after using PaintShop Pro (PSP) for a long time, the major feature I miss from PSP is Perspective Correction.
If we had a comparable feature in ASP, this would reduce the need to call PSP as an External Editor.

I have now been using the zPerspector PlugIn a lot for Perspective Correction in ASP and the more I use it, the more I prefer it to the facility in PSP

There is one pair of controls, however, that seem to me to be counter-intuitive: The Lower Left Corner and Lower Right Corner Up/Down sliders. They should move in the opposite direction!

[tintin]

There is one pair of controls, however, that seem to me to be counter-intuitive: The Lower Left Corner and Lower Right Corner Up/Down sliders. They should move in the opposite direction!

all the 8 sliders are implemented to move the corners out by turning the mouse wheel upward and to the inner when turning the mouse wheel downward.
changing this for just that both sliders would break the ui somehow.

br,
tintin

[Tadjio]

There is one pair of controls, however, that seem to me to be counter-intuitive: The Lower Left Corner and Lower Right Corner Up/Down sliders. They should move in the opposite direction!

all the 8 sliders are implemented to move the corners out by turning the mouse wheel upward and to the inner when turning the mouse wheel downward.
changing this for just that both sliders would break the ui somehow.
br,
tintin

It's difficult to explain other than by doing it! I am talking about the slider, not the mouse wheel.
Moving the upper-left corner up/down is fine :-

• Mouse wheel up, drag slider up, all increase the numerical value and move the corner up.

however...
Moving the lower-left corner up/down is odd :-

• Mouse wheel up moves the corner outward (down) as I would expect.
  Slider up moves the corner inward (up) which is wrong to me (and reduces the numerical value).

I can live with it, but I still feel it is counter-intuitive when using the slider!

[Tadjio]

Moving the lower-left corner up/down is odd :-

• Mouse wheel up moves the corner outward (down) as I would expect.
  Slider up moves the corner inward (up) which is wrong to me (and reduces the numerical value).

I can live with it, but I still feel it is counter-intuitive when using the slider!

I haven't made myself clear - when I say 'slider up' I am using the arrow keys (not dragging the slider, which works ok).
Let me just try and explain this another way:
Using the arrow keys on the top row sliders 'move upper-left corner left/right' and 'move upper-right corner left/right' work in equal and opposite ways, so why don't 'move upper-left corner up/down' and 'move lower-left corner up/down'?

I give up - I think this is going to be too difficult to change...

[gareth]

The mouse wheel and keys work the same ( push/up = bigger , more positive value )

You are right that it might be more logical for the mouse wheel (pull) and arrow(down) to move down on on the lower up/down sliders
but that logic would not work with left and right so I think it is better to stay with up = bigger number!