[Darktable-users] Crop and rotate

[Francisco Cribari]

It would be nice if the crop and rotate module of Darktable included an
AUTO straightening option (for vertical and horizontal lines) similar to
that in Lightroom 5. Is that feasible? Thank you. Best, Francisco

[David Vincent-Jones]

Right click and drag/draw the line

David

Post by Francisco Cribari
It would be nice if the crop and rotate module of Darktable included an
AUTO straightening option (for vertical and horizontal lines) similar to
that in Lightroom 5. Is that feasible? Thank you. Best, Francisco
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...

[Robert William Hutton]

It would be nice if the crop and rotate module of Darktable included an AUTO straightening option (for vertical and
horizontal lines) similar to that in Lightroom 5. Is that feasible? Thank you. Best, Francisco

Have you tried right clicking and dragging a line? This will work vertically and horizontally.

Cheers,

Rob

[Pascal Obry]

Post by Robert William Hutton

It would be nice if the crop and rotate module of Darktable included an AUTO straightening option (for vertical and
horizontal lines) similar to that in Lightroom 5. Is that feasible? Thank you. Best, Francisco

Have you tried right clicking and dragging a line? This will work vertically and horizontally.

I think the OP is speaking about auto perspective adjustment as he
mentioned explicitly Lr5 :)

[Francisco Cribari]

Thank you, Robert. Yes, I have. However, oftentimes I need two vertical
lines to do the proper straightening. Sometimes I even need two vertical
and two horizontal lines. I use the keystone option in the crop and rotate
module. It would be nice if there was an option that did that (or at least
tried to do that) automatically. I have no idea whether that is feasible,
though. For an example in LR 5, see this video (4m40s, that's where you
will find the example) by Thomas Leuthard:

.


On Fri, Oct 25, 2013 at 1:24 PM, Robert William Hutton <

Post by Francisco Cribari

Post by Francisco Cribari
It would be nice if the crop and rotate module of Darktable included an

AUTO straightening option (for vertical and

Post by Francisco Cribari
horizontal lines) similar to that in Lightroom 5. Is that feasible?

Thank you. Best, Francisco
Have you tried right clicking and dragging a line? This will work
vertically and horizontally.
Cheers,
Rob

[Ulrich Pegelow]

Hi,

one idea might be to indroduce some of the functionality of ShiftN into
a darktable module (see http://www.shiftn.de). ShiftN is a Windows
program but can be used under Linux with wine. Works very well to
automatically adjust perspective corrections. The latest version has
been released with sources under the LGPL 3. So at least one could learn
from that program.

Could be a nice GSOC project, BTW.

Ulrich

Post by Francisco Cribari
Thank you, Robert. Yes, I have. However, oftentimes I need two vertical
lines to do the proper straightening. Sometimes I even need two vertical
and two horizontal lines. I use the keystone option in the crop and
rotate module. It would be nice if there was an option that did that (or
at least tried to do that) automatically. I have no idea whether that is
feasible, though. For an example in LR 5, see this video (4m40s, that's
http://youtu.be/ZSNlplqlWrY .
On Fri, Oct 25, 2013 at 1:24 PM, Robert William Hutton

Post by Francisco Cribari
It would be nice if the crop and rotate module of Darktable

included an AUTO straightening option (for vertical and

Post by Francisco Cribari
horizontal lines) similar to that in Lightroom 5. Is that

feasible? Thank you. Best, Francisco
Have you tried right clicking and dragging a line? This will work
vertically and horizontally.
Cheers,
Rob

...

[Stefano Fornari]

[Francisco Cribari]

Stefano: That's what I use. My question is whether it is possible to
implement an option for *automatic* straightening and perspective similar
to that of LR 5. Thank you. Best, Francisco


On Sat, Oct 26, 2013 at 7:04 PM, Stefano Fornari

Post by unknown
Isn't the keystone guidelines of the crop&rotate plugin what you are
looking for?
Ste

Post by Francisco Cribari
Thank you, Robert. Yes, I have. However, oftentimes I need two vertical
lines to do the proper straightening. Sometimes I even need two vertical
and two horizontal lines. I use the keystone option in the crop and rotate
module. It would be nice if there was an option that did that (or at least
tried to do that) automatically. I have no idea whether that is feasible,
though. For an example in LR 5, see this video (4m40s, that's where you
http://youtu.be/ZSNlplqlWrY .
On Fri, Oct 25, 2013 at 1:24 PM, Robert William Hutton <

Post by Francisco Cribari
It would be nice if the crop and rotate module of Darktable included

an AUTO straightening option (for vertical and

Post by Francisco Cribari
horizontal lines) similar to that in Lightroom 5. Is that feasible?

Thank you. Best, Francisco
Have you tried right clicking and dragging a line? This will work
vertically and horizontally.
Cheers,
Rob

--
friend, is grey, but green is life's glad golden tree." --Goethe (Faust)
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--
Ste

...

[unknown]

--f46d0444023e34bf7704e9ac0c25
Content-Type: text/plain; charset=ISO-8859-1

Isn't the keystone guidelines of the crop&rotate plugin what you are
looking for?

Ste

Post by Francisco Cribari
Thank you, Robert. Yes, I have. However, oftentimes I need two vertical
lines to do the proper straightening. Sometimes I even need two vertical
and two horizontal lines. I use the keystone option in the crop and rotate
module. It would be nice if there was an option that did that (or at least
tried to do that) automatically. I have no idea whether that is feasible,
though. For an example in LR 5, see this video (4m40s, that's where you
http://youtu.be/ZSNlplqlWrY .
On Fri, Oct 25, 2013 at 1:24 PM, Robert William Hutton <

Post by Francisco Cribari

Post by Francisco Cribari
It would be nice if the crop and rotate module of Darktable included an

AUTO straightening option (for vertical and

Post by Francisco Cribari
horizontal lines) similar to that in Lightroom 5. Is that feasible?

Thank you. Best, Francisco
Have you tried right clicking and dragging a line? This will work
vertically and horizontally.
Cheers,
Rob

--
friend, is grey, but green is life's glad golden tree." --Goethe (Faust)
------------------------------------------------------------------------------
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Explore tips for MPI, OpenMP, advanced profiling, and more. Get the most
from
the latest Intel processors and coprocessors. See abstracts and register >
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_______________________________________________
Darktable-users mailing list
https://lists.sourceforge.net/lists/listinfo/darktable-users

...

--
Ste

--f46d0444023e34bf7704e9ac0c25
Content-Type: text/html; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable <div dir="ltr"><div>Isn&#39;t the keystone guidelines of the crop&amp;rotate plugin what you are looking for?<br><br></div>Ste<br></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Fri, Oct 25, 2013 at 6:38 PM, Francisco Cribari <span dir="ltr">&lt;<a href="mailto:***@gmail.com" target="_blank">***@gmail.com</a>&gt;</span> wrote:<br> <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Thank you, Robert. Yes, I have. However, oftentimes I need two vertical lines to do the proper straightening. Sometimes I even need two vertical and two horizontal lines. I use the keystone option in the crop and rotate module. It would be nice if there was an option that did that (or at least tried to do that) automatically. I have no idea whether that is feasible, though. For an example in LR 5, see this video (4m40s, that&#39;s where you will find the example) by Thomas Leuthard:�<a http://youtu.be/ZSNlplqlWrY http://youtu.be/ZSNlplqlWrY <div class="gmail_extra"><div class="im"><br><br><div class="gmail_quote">On Fri, Oct 25, 2013 at 1:24 PM, Robert William Hutton <span dir="ltr">&lt;<a href="mailto:***@helms-deep.cable.nu" target="_blank">***@helms-deep.cable.nu</a>&gt;</span> wrote:<br>

<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div>On 25/10/13 17:20, Francisco Cribari wrote:<br>
&gt; It would be nice if the crop and rotate module of Darktable included an AUTO straightening option (for vertical and<br>
&gt; horizontal lines) similar to that in Lightroom 5. Is that feasible? Thank you. Best, Francisco<br>
<br>
</div>Have you tried right clicking and dragging a line?  This will work vertically and horizontally.<br>
<br>
Cheers,<br>
<br>
Rob<br>
<br>
</blockquote></div><br><br clear="all"><div><br></div>-- <br></div>Francisco Cribari-Neto, email: <a href="mailto:***@gmail.com" target="_blank">***@gmail.com</a> - &quot;All theory, my friend, is grey, but green is life&#39;s glad golden tree.&quot; --Goethe (Faust)
</div>
<br>------------------------------------------------------------------------------<br>
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Free Intel webinars can help you accelerate application performance.<br>
Explore tips for MPI, OpenMP, advanced profiling, and more. Get the most from<br>
the latest Intel processors and coprocessors. See abstracts and register &gt;<br>
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Darktable-users mailing list<br>
<a href="mailto:Darktable-***@lists.sourceforge.net">Darktable-***@lists.sourceforge.net</a><br>
<a href="https://lists.sourceforge.net/lists/listinfo/darktable-users" target="_blank">https://lists.sourceforge.net/lists/listinfo/darktable-users</a><br>
<br></blockquote></div><br><br clear="all"><br>-- <br>Ste
</div>

--f46d0444023e34bf7704e9ac0c25--