[digiKam-users] image rotation

Hello,

I still have in 6.3 a very old bug with rotation.

I have the setup of "do not show the image accounting with the rotation
flag", else I couldn't know what image to rotate (not every program
knows of this flag).

On the digikam thumbnail view (the most usual), if I see an vertical
image and I clic once on the rotate left icon, the iage is rotated left
by 180° when it should be 90°.

rotating it right restore the right position.

happen before any other edit

jdd
--
http://dodin.org

[Maik Qualmann]

The rotation is executed correctly. If you rotate in preview mode, the
thumbnail from the thumbnail bar may come out of the sync. The thumbnail in
the icon view is correct. It's just a cache issue in the thumbnail bar. I have
a look at it.

Maik

Am Freitag, 4. Oktober 2019, 21:15:39 CEST schrieb [hidden email]:

> Hello,
>
> I still have in 6.3 a very old bug with rotation.
>
> I have the setup of "do not show the image accounting with the rotation
> flag", else I couldn't know what image to rotate (not every program
> knows of this flag).
>
> On the digikam thumbnail view (the most usual), if I see an vertical
> image and I clic once on the rotate left icon, the iage is rotated left
> by 180° when it should be 90°.
>
> rotating it right restore the right position.
>
> happen before any other edit
>
> jdd

Le 05/10/2019 à 19:21, Maik Qualmann a écrit :
> The rotation is executed correctly.

>> I still have in 6.3 a very old bug with rotation.
>>
>> I have the setup of "do not show the image accounting with the rotation
>> flag", else I couldn't know what image to rotate (not every program
>> knows of this flag).
>>
>> On the digikam thumbnail view (the most usual), if I see an vertical
>> image and I clic once on the rotate left icon, the iage is rotated left
>> by 180° when it should be 90°.
>>

I'm sorry to insist on this problem, but it hits me badly.

May be I found the problem?

* the "show image thumbnail according to the rotation tag" seems to be
wrong and do exactly the opposite. If clicked, the image *is not*
rotated. Vertical image (tagged left, bottom) is seen with top to the left.

* the same image, rotated in the editor or in digikam *is* seen vertical
and quoted top, left

thanks
jdd

--
http://dodin.org

[Gilles Caulier-4]

Q : it's RAW images ?

If no, well camera store probably a wrong orientation in Exif metadata. It's a know problem with some camera or phone.

If yes, well, welcome in mess RAW world, where preview JPEG embedded in RAW do not use the same orientation than RAW image data. Of course JPEG embedded do not always have Exif info...

Gilles Caulier

Le mar. 8 oct. 2019 à 09:22, [hidden email] <[hidden email]> a écrit :

Le 05/10/2019 à 19:21, Maik Qualmann a écrit :
> The rotation is executed correctly.

>> I still have in 6.3 a very old bug with rotation.
>>
>> I have the setup of "do not show the image accounting with the rotation
>> flag", else I couldn't know what image to rotate (not every program
>> knows of this flag).
>>
>> On the digikam thumbnail view (the most usual), if I see an vertical
>> image and I clic once on the rotate left icon, the iage is rotated left
>> by 180° when it should be 90°.
>>

I'm sorry to insist on this problem, but it hits me badly.

May be I found the problem?

* the "show image thumbnail according to the rotation tag" seems to be
wrong and do exactly the opposite. If clicked, the image *is not*
rotated. Vertical image (tagged left, bottom) is seen with top to the left.

* the same image, rotated in the editor or in digikam *is* seen vertical
and quoted top, left

thanks
jdd

--
http://dodin.org

Le 08/10/2019 à 10:41, Gilles Caulier a écrit :
> Q : it's RAW images ?

no. Panasonic GX80 jpg
>
> If no, well camera store probably a wrong orientation in Exif metadata.

I don't think so, specially because as soon as I changed this setup, all
worked fine, no more 180° rotation when -90° is required...

it's a very old problem I solved by using gwenview to make the rotation,
so I guess it's something pretty naked is some part of the code, may be
in exiv2?

look at this image:

https://ncloud.zaclys.com/index.php/s/DM58MDDB88tjFgK

seems perfectly normal

may be also it's a problem with my openSUSE Leap distribution?

thanks
jdd

--
http://dodin.org

[Peter Albrecht]

Hello list,

On 08.10.19 11:20, [hidden email] wrote:
> I don't think so, specially because as soon as I changed this setup, all worked
> fine, no more 180° rotation when -90° is required...
>
> it's a very old problem I solved by using gwenview to make the rotation, so I
> guess it's something pretty naked is some part of the code, may be in exiv2?

I am still using digiKam version 5.9.0 (Debian Stretch). With this version, I am
hit by this problem, too:

When I click "Item" > "Rotate" > "Right", the picture is not rotated -90° but
180°. Interestingly, using "Item" > "Auto Rotate/Flip Using Exif Information",
the pictures are rotated correctly. ;)
So having imported all images from camera, the first thing I do is: "select all"
+ "Auto Rotate..."

Maybe this helps in your case, too.


Regards,
        Peter

Le 08/10/2019 à 18:07, Peter Albrecht a écrit :

> Maybe this helps in your case, too.
>
>
at least not to be alone, yes, thanks :-))

jdd


--
http://dodin.org