[KPhotoAlbum] Raw workflow

Miika Turkia miika.turkia at gmail.com
Tue Aug 28 05:15:12 BST 2012

On Mon, Aug 27, 2012 at 10:02 PM, Robert Krawitz <rlk at alum.mit.edu> wrote:
> On Mon, 27 Aug 2012 20:58:16 +0300, Miika Turkia wrote:
>> On Mon, Aug 27, 2012 at 6:59 PM, Robert Krawitz <rlk at speakeasy.net> wrote:
>>> On Mon, 27 Aug 2012 07:48:22 +0300, Miika Turkia wrote:
>>>> On Sun, Aug 26, 2012 at 10:43 PM, Robert Krawitz <rlk at speakeasy.net> wrote:
>>>>> The kpa manual states:
>>>>> "A few settings are recommended for a RAW workflow. First is to enable
>>>>> the using of the embedded thumbnail. This will give a tremendous speed
>>>>> boost over decoding each raw file each time they are viewed (check also
>>>>> the minimum dimension configuration to ensure decent quality). Second
>>>>> one is for the New Image Finder to automatically stack the developed
>>>>> versions over the RAW file (developed image must be on same directory as
>>>>> the original). This requires regular expressions as described in ."
>>>>> The last is obviously a reference to the new image finder settings, but
>>>>> it doesn't explain clearly what the search regexp and file replacement
>>>>> texts should be.  This would benefit greatly from an example (I haven't
>>>>> figured out what they need to be myself!").
>>>> The reference points to chapter "New Image Finder Settings" where the
>>>> regular expressions I used at the time of writing are shown. Is the
>>>> link missing from your manual? It is working on HTML and PDF version
>>>> from docs.kde.org. Anyway, what I currently have is:
>>>> Search: (_(v){0,1}([0-9]){1,2}){0,1}\.(jpg|JPG|tif|TIF|png|PNG)
>>>> Orig: .NEF;.CR2;.JPG;.jpg;.ORF
>>> I currently have
>>> Search: _[0-9]{4}\.(jpg)
>>> Orig: .cr2;.crw;.jpg
>>> but still get two copies of each image.
>> _1234.jpg is the suffix that matches your regex and should be replaced
>> with cr2, crw or jpg. If you have the JPGs already in the database and
>> try to match RAWs you need to add the raw into the regex. Following is
>> my guess of what you need as search:
>> (_[0-9]{4}){0,1}\.(jpg|cr2|CR2|crw|CRW)
> OK, I guess I'll know in a few hour, when it's done importing
> everything.
> Evidently I don't understand what the Orig and Search are supposed to be
> fore.  I didn't see .NEF or .CR2 in the Search, so it wasn't evident to
> me that they should have been in there.

This is because I work on RAW. Thus there is no such case for me that
JPG exists in KPA and RAW should be found.

There are at least two places to get the information regarding this feature:
- Right click on the "File version search regexp:" or "Original file
replacementtext:" and select "What's this?"
- The manual that is available in Khelpcenter and as PDF/HTML from KDE docs

Seems that this is not clear enough currently and all the help in
improving these is appreciated.

> The stacking is complex enough that I think a few examples and use cases
> would be appropriate.  RAW+JPEG is common enough (specifically, most
> cameras that provide RAW files provide the option for RAW only,
> RAW+JPEG, or JPEG only) that that example should be provided.

I optimistically introduced the workflows chapter to describe
different workflows for different needs. Currently there is only one
and another (panorama workflow) in the works. So if you or anyone else
is interested in writing a flow, I'll be just happy to include it.

>> This works so that for each new image found, whatever matches the
>> search regex is replaced with the original replacement text (in your
>> case first cr2, if not found with crw, and finally with jpg). So in
>> your current regex only the files ending with _1234.jpg are matched
>> and this part is replaced with e.g. .cr2
> This still isn't clear.  If I want the JPEG files to be at the top of
> the stack, what do I need to have in the orig box?

The newly found image goes to the top of the stack (IIRC). I don't
think there is any way to have the specific image automatically on the

> Also, some cameras (like the original Rebel, and others that used the
> .crw format) named the files differently: crw_xxxx.crw for the RAW,
> img_xxxx.jpg for the JPEG.  I assume (since I didn't specify crw or img
> in the regexp) that that would do the right thing, since it won't try to
> match those prefixes?

The prefix should also changed. Following example should handle the
case you describe above properly. However, combining this with your
other renaming convention will also have to be figured out. BTW for
testing purposes I suggest you set up a test directory with a few
images only and start KPA with -c <test-dir> parameter. This way it'll
take only a few seconds to see whether the config works or not.
Search regex: crw_([0-9]*)\.crw
Replace text: img_\1.jpg

This will change both the prefix and suffix from the existing file and
use whatever is between the parentheses in the middle. Thus when a new
file crw_1234.crw is found it will be changed to img_1234.jpg. And if
this JPG file is found in KPA DB, autostacking will occur.

>> BTW I do see the reference to the chapter describing these regexes in
>> git - both on my clone and web version. In the workflows.docbook
>> <xref linkend="opt-search-new" />
> Did you inspect the installed documentation in the KHelpCenter browser
> (not just the source file)?

Yes, I have inspected the KHelpCenter both from GUI and
workflows.docbook files installed. (Systemwide 4.2 from Dominik's PPA
repository and GIT version from my own compile.) Now the question is,
how does the reference disappear in your version.


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