Auto Orientation [Deskew]

[jotess]

Oh thank you - now I realized that it was about XnConvert, not XnShell. And the same commands as in XnConvert are available also from within XnView.
In my German version, I find "Transformieren" > "Schieflage automatisch korrigieren". Switching the UI language to English, I could verify, that it is the same command. Hint: This is not a good translation. The German term translated back to English would mean something like "Correct slant (or: tilt) automatically". Like turning an image with a horizon that is not horizontal.
What I understand as "deskew" is skewing an image of e.g. a rectangular object that was not photographed orthogonally to appear properly rectangular in the image. Is that what the command should do?

[cday]

In my German version, I find "Transformieren" > "Schieflage automatisch korrigieren". Switching the UI language to English, I could verify, that it is the same command. Hint: This is not a good translation. The German term translated back to English would mean something like "Correct slant (or: tilt) automatically". Like turning an image with a horizon that is not horizontal.

"Correct slant (or: tilt) automatically" is actually an accurate description of the deskew function...

What I understand as "deskew" is skewing an image of e.g. a rectangular object that was not photographed orthogonally to appear properly rectangular in the image. Is that what the command should do?

That would be another type of operation not currently supported by XnView software: the available deskew operation is probably best thought of in the context of straightening an image that has a natural orientation, such as a sightly skewed scan of a book page where the left margin provides a vertical reference. Operation can be easily illustrated by drawing a rectangle using drawing software, rotating the rectangle slightly, saving the slightly skewed image and then applying the deskew operation. I posted an illustrative test image recently but can't immediately find it.

[jotess]

Okay, understood. So a "real" deskew function would be feature request. In my case it's not a scan of a page but a photograph.