Hello,
I am an architect, and proportion is a very important issue in facades. When I use the wonderful Perspective Correction module combined with the Lens Correction module, I get truly orthogonal results. The problem is that these are out of proportion. A square window becomes a rectangle.
Is this possible to achieve using the implemented features? Or would that need extra dev work?
(other softwares which can achieve the square proportion are PTLens, or Hugin, but they require lots of user fiddling and fall out of Darktalbe workflow)
I am not talking about cropping the image, not about he aspect ration of the overall document dimensions. I am talking of the proportion of the perspective correction. Below, I attach the result fromm PTLens: notice the square proportion of each “window”.
Your windows do look square (I did not measure them, though).
If you mean your image doesn’t look like one, see the above comment. Then, I guess PTLens and/or Hugin are showing you the properly cropped final image. In DT all you need to do is crop the processed image.
If, on the other hand, you mean that you shoot squares and after perspective correction they are not squares then there may well be something for the developers here.
I do mean that I [quote=“bc_the-path, post:5, topic:12668”]
shoot squares and after perspective correction they are not squares then there may well be something for the developers here.
[/quote] !
The 240 moucharabiehs of Paris Institut du Monde Arabe are all perfect squares. They are transformed to rectangles, mainly at the top of image, by the perspective correction. Seems like a bug.
Wow, I thought that being an experienced user I wouldn’t learn anything new. Was I ever wrong! For years I’ve been been correcting the resulting lopsided dimensions in Gimp after a perspective correction in Darktable (or even leave the perspective correction to Digikam which also introduces dimensional issues). Thank you ever so much!!!