[digiKam-users] Image resolution change

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[digiKam-users] Image resolution change

Northern Colorado Event Photograph
I have digiKam 6.0.0 installed on a 64 bit Win 7 SP1 computer with i5 processor and 8 GB of RAM.

Is there any way to change the resolution of an image (either RAW or JPG or both) using digiKam?

I looked through the documentation (https://docs.kde.org/) and I tried several online searches using different search criteria, but I did not find any results.

Perhaps I missed something.  Can anyone help?
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Re: Image resolution change

Peter Albrecht
Hello,

to change the resolution of a JPG image do the following steps (I am using
digikam 5.9.0 at the moment):

1. open the image in the editor (Menu > Item > Open...)
2. in the menu choose: Transform > Resize ...
3. enter new dimension on the right side
4. click "OK" button in the lower right corner
5. save the image


If you have to change the resolution of several images, you can use the "Batch
Queue Manager":

1. in album view select one or more images
2. in the menu choose: Item > Add to New Queue...
3. select a tool in the lower right corner: Base Tools > Transform > Resize
4. configure new dimensions in the upper right corner
5. click "Run" button in the toolbar


Regards,
        Peter


On 23.08.19 20:33, Northern Colorado Event Photograph wrote:

> I have digiKam 6.0.0 installed on a 64 bit Win 7 SP1 computer with i5
> processor and 8 GB of RAM.
>
> Is there any way to change the resolution of an image (either RAW or JPG or
> both) using digiKam?
>
> I looked through the documentation (https://docs.kde.org/) and I tried
> several online searches using different search criteria, but I did not find
> any results.
>
> Perhaps I missed something.  Can anyone help?
>
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Re: Image resolution change

Remco Viëtor
On vendredi 23 août 2019 23:42:42 CEST Peter Albrecht wrote:

> Hello,
>
> to change the resolution of a JPG image do the following steps (I am using
> digikam 5.9.0 at the moment):
>
> 1. open the image in the editor (Menu > Item > Open...)
> 2. in the menu choose: Transform > Resize ...
> 3. enter new dimension on the right side
> 4. click "OK" button in the lower right corner
> 5. save the image
>
>
> If you have to change the resolution of several images, you can use the
> "Batch Queue Manager":
>
> 1. in album view select one or more images
> 2. in the menu choose: Item > Add to New Queue...
> 3. select a tool in the lower right corner: Base Tools > Transform > Resize
> 4. configure new dimensions in the upper right corner
> 5. click "Run" button in the toolbar

With your procedure, you change the size in pixels, not the resolution...

On the other hand, a digital image doesn't have an intrinsic size in inches,
only a size in pixels, so talking about the resolution (pixels/inch) of a
digital image is a bit meaningless.

Resolution plays a role when printing, in that printers can usually handle up
to 300-360 pixels/inch. Good for paper when viewed from ~30cm, already
overkill for canvas (where ~150 pixels/inch is the maximum), or posters veiwed
from a larger distance...

Remco

>
> On 23.08.19 20:33, Northern Colorado Event Photograph wrote:
> > I have digiKam 6.0.0 installed on a 64 bit Win 7 SP1 computer with i5
> > processor and 8 GB of RAM.
> >
> > Is there any way to change the resolution of an image (either RAW or JPG
> > or
> > both) using digiKam?
> >
> > I looked through the documentation (https://docs.kde.org/) and I tried
> > several online searches using different search criteria, but I did not
> > find
> > any results.
> >
> > Perhaps I missed something.  Can anyone help?