Help me import edited 'versions' of images from Picasa

[digiKamUser]

CONTENTS DELETED

The author has deleted this message.

[Gilles Caulier-4]

Hi,

The versionning is stored in XMP digiKam namespace :

http://www.exiv2.org/tags-xmp-digiKam.html

Look ImageHistory tag.

In source code, the method which export history to XML data is this one :

https://cgit.kde.org/digikam.git/tree/libs/dimg/imagehistory/dimagehistory.cpp#n491

An example of exported history is given below (with resize tool used) :

$ exiv2 -px DSC03712_1.JPG 

Xmp.tiff.Software                            XmpText    13  digiKam-4.2.0

Xmp.tiff.ImageWidth                          XmpText     3  800

Xmp.tiff.ImageLength                         XmpText     3  533

Xmp.xmp.CreatorTool                          XmpText    13  digiKam-4.2.0

Xmp.exif.PixelXDimension                     XmpText     3  800

Xmp.exif.PixelYDimension                     XmpText     3  533

Xmp.digiKam.ImageHistory                     XmpText   1647  <?xml version="1.0"?>

<history version="1">

    <file uuid="e854d7e092d41bc00c1e537af3e7296dafe85809797bbf3f3ff93a48b8d07a5d" type="original">

        <fileParams filePath="/" fileHash="afe85809797bbf3f3ff93a48b8d07a5d" fileSize="12812288" creationDate="2014-07-13T14:52:45"/>

    </file>

    <filter filterName="digikam:LocalContrastFilter" filterDisplayName="Local Contrast Filter" filterVersion="2" filterCategory="reproducible">

        <params>

            <param name="functionId" value="0"/>

            <param name="highSaturation" value="100"/>

            <param name="lowSaturation" value="100"/>

            <param name="randomSeed" value="2940933007"/>

            <param name="stage[0]:blur" value="11"/>

            <param name="stage[0]:enabled" value="true"/>

            <param name="stage[0]:power" value="30"/>

            <param name="stage[1]:enabled" value="false"/>

            <param name="stage[2]:enabled" value="false"/>

            <param name="stage[3]:enabled" value="false"/>

            <param name="stretchContrast" value="true"/>

        </params>

    </filter>

    <file uuid="9265806dd2ed9a362fdd2d9d83da1d3cafe85809797bbf3f3ff93a48b8d07a5d">

        <fileParams fileName="DSC03712.JPG" filePath="/Users/gilles/Pictures/Photos/SALAGOU/2014-07-13/" fileHash="fdb610f5d23b875e575d7fb3d32df0b1" fileSize="4562194"/>

    </file>

    <filter filterName="transform:resize" filterDisplayName="Resize" filterVersion="1" filterCategory="reproducible" branch="true">

        <params>

            <param name="height" value="533"/>

            <param name="width" value="800"/>

        </params>

    </filter>

</history>

Xmp.digiKam.ImageUniqueID                    XmpText    64  a50d3eaae1bc5da03c0c7d159bb30649fdb610f5d23b875e575d7fb3d32df0b1

Gilles Caulier

2017-02-06 10:29 GMT+01:00 g0rak 1 <[hidden email]>:

Hey all,

I'm new to Digikam and looking to move from Picasa.  I've been impressed by Digikam's non-destructive versioning and want to use it to retain my Picasa edits by:

- exporting all edited photos from Picasa

- adding '_v1' to their filenames

- adding Digikam's versioning XML to 'ImageHistory' field in the XMP tag of each edited image

Digikam should then link the edited version with the original, and then hide the original in the thumbnail browser as the original 'version'.

Does anyone know where I can find the specification for Digikam's versioning XML, so I can work out how to write my own XML into the images?  I can see the basic structure after performing a resize etc., but ideally I want to keep things simple and record each edited version as 'Edited by Picasa' without having to work out what the edit actually was.  

I'm not sure if it's possible to define a generic 'version' in the XML without specifying a 'filter' and 'parameters' (e.g. a resize with coordinates, etc.), but would like to find out.

If I can get this to work I will happily share my script with the community as there might be others looking to move from Picasa who would like to maintain their edits alongside their originals.

Thanks for your help, 

Simon

[digiKamUser]

Hey Gilles,

Thank you for replying.  I checked out the namespace link but it didn't give any info on what are the acceptable names for the filters.  For the source code however I could at least what the other filter categories are, such as 'doucmentedHistory.  

Based on this, can I just make up my own filter name, and provide no parameters?  

E.g. below I have made a filter named 'picasa:Picasa', display name 'Edited by Picasa', filter version '1', with a category 'documentedHistory'.

<?xml version="1.0"?>.

<history version="1">.

  <file uuid="4d13dbbff40ae5501c42e6314b8b8f52" type="original">.

    <fileParams fileName="20170103_094034.jpg" filePath="/Users/simon/Photos/2016/Holiday/" fileHash="8838978dccc24c1763b6996fe94bb019" fileSize="4401586" creationDate="2017-01-03T09:40:34"/>.

  </file>.

  <filter filterName="picasa:Picasa" filterDisplayName="Edited by Picasa" filterVersion="1" filterCategory="documentedHistory">.        

    <params>.

    </params>.

  </filter>.

</history>.

If you think it is acceptable to make up filter names, then I will be happy to give this a try.

Kind regards,

Simon

On 7 February 2017 at 05:09, Gilles Caulier <[hidden email]> wrote:

Hi,

The versionning is stored in XMP digiKam namespace :

http://www.exiv2.org/tags-xmp-digiKam.html

Look ImageHistory tag.

In source code, the method which export history to XML data is this one :

https://cgit.kde.org/digikam.git/tree/libs/dimg/imagehistory/dimagehistory.cpp#n491

An example of exported history is given below (with resize tool used) :

$ exiv2 -px DSC03712_1.JPG 

Xmp.tiff.Software                            XmpText    13  digiKam-4.2.0

Xmp.tiff.ImageWidth                          XmpText     3  800

Xmp.tiff.ImageLength                         XmpText     3  533

Xmp.xmp.CreatorTool                          XmpText    13  digiKam-4.2.0

Xmp.exif.PixelXDimension                     XmpText     3  800

Xmp.exif.PixelYDimension                     XmpText     3  533

Xmp.digiKam.ImageHistory                     XmpText   1647  <?xml version="1.0"?>

<history version="1">

    <file uuid="e854d7e092d41bc00c1e537af3e7296dafe85809797bbf3f3ff93a48b8d07a5d" type="original">

        <fileParams filePath="/" fileHash="afe85809797bbf3f3ff93a48b8d07a5d" fileSize="12812288" creationDate="2014-07-13T14:52:45"/>

    </file>

    <filter filterName="digikam:LocalContrastFilter" filterDisplayName="Local Contrast Filter" filterVersion="2" filterCategory="reproducible">

        <params>

            <param name="functionId" value="0"/>

            <param name="highSaturation" value="100"/>

            <param name="lowSaturation" value="100"/>

            <param name="randomSeed" value="2940933007"/>

            <param name="stage[0]:blur" value="11"/>

            <param name="stage[0]:enabled" value="true"/>

            <param name="stage[0]:power" value="30"/>

            <param name="stage[1]:enabled" value="false"/>

            <param name="stage[2]:enabled" value="false"/>

            <param name="stage[3]:enabled" value="false"/>

            <param name="stretchContrast" value="true"/>

        </params>

    </filter>

    <file uuid="9265806dd2ed9a362fdd2d9d83da1d3cafe85809797bbf3f3ff93a48b8d07a5d">

        <fileParams fileName="DSC03712.JPG" filePath="/Users/gilles/Pictures/Photos/SALAGOU/2014-07-13/" fileHash="fdb610f5d23b875e575d7fb3d32df0b1" fileSize="4562194"/>

    </file>

    <filter filterName="transform:resize" filterDisplayName="Resize" filterVersion="1" filterCategory="reproducible" branch="true">

        <params>

            <param name="height" value="533"/>

            <param name="width" value="800"/>

        </params>

    </filter>

</history>

Xmp.digiKam.ImageUniqueID                    XmpText    64  a50d3eaae1bc5da03c0c7d159bb30649fdb610f5d23b875e575d7fb3d32df0b1

Gilles Caulier

2017-02-06 10:29 GMT+01:00 g0rak 1 <[hidden email]>:

Hey all,

I'm new to Digikam and looking to move from Picasa.  I've been impressed by Digikam's non-destructive versioning and want to use it to retain my Picasa edits by:

- exporting all edited photos from Picasa

- adding '_v1' to their filenames

- adding Digikam's versioning XML to 'ImageHistory' field in the XMP tag of each edited image

Digikam should then link the edited version with the original, and then hide the original in the thumbnail browser as the original 'version'.

Does anyone know where I can find the specification for Digikam's versioning XML, so I can work out how to write my own XML into the images?  I can see the basic structure after performing a resize etc., but ideally I want to keep things simple and record each edited version as 'Edited by Picasa' without having to work out what the edit actually was.  

I'm not sure if it's possible to define a generic 'version' in the XML without specifying a 'filter' and 'parameters' (e.g. a resize with coordinates, etc.), but would like to find out.

If I can get this to work I will happily share my script with the community as there might be others looking to move from Picasa who would like to maintain their edits alongside their originals.

Thanks for your help, 

Simon

[Gilles Caulier-4]

well parameters will populate the database with these information.

For the moment, it's just informative, but in the future, the goal is to be able to apply same filter on another image by copy and paste from GUI.

So, yes, it can be acceptable, but take a care. Work on test database, in case of you break something.

Your feedback can be interesting if it work to improve import rules in digiKam.

Gilles Caulier

2017-02-10 1:25 GMT+01:00 g0rak 1 <[hidden email]>:

Hey Gilles,

Thank you for replying.  I checked out the namespace link but it didn't give any info on what are the acceptable names for the filters.  For the source code however I could at least what the other filter categories are, such as 'doucmentedHistory.  

Based on this, can I just make up my own filter name, and provide no parameters?  

E.g. below I have made a filter named 'picasa:Picasa', display name 'Edited by Picasa', filter version '1', with a category 'documentedHistory'.

<?xml version="1.0"?>.

<history version="1">.

  <file uuid="4d13dbbff40ae5501c42e6314b8b8f52" type="original">.

    <fileParams fileName="20170103_094034.jpg" filePath="/Users/simon/Photos/2016/Holiday/" fileHash="8838978dccc24c1763b6996fe94bb019" fileSize="4401586" creationDate="2017-01-03T09:40:34"/>.

  </file>.

  <filter filterName="picasa:Picasa" filterDisplayName="Edited by Picasa" filterVersion="1" filterCategory="documentedHistory">.        

    <params>.

    </params>.

  </filter>.

</history>.

If you think it is acceptable to make up filter names, then I will be happy to give this a try.

Kind regards,

Simon

On 7 February 2017 at 05:09, Gilles Caulier <[hidden email]> wrote:

Hi,

The versionning is stored in XMP digiKam namespace :

http://www.exiv2.org/tags-xmp-digiKam.html

Look ImageHistory tag.

In source code, the method which export history to XML data is this one :

https://cgit.kde.org/digikam.git/tree/libs/dimg/imagehistory/dimagehistory.cpp#n491

An example of exported history is given below (with resize tool used) :

$ exiv2 -px DSC03712_1.JPG 

Xmp.tiff.Software                            XmpText    13  digiKam-4.2.0

Xmp.tiff.ImageWidth                          XmpText     3  800

Xmp.tiff.ImageLength                         XmpText     3  533

Xmp.xmp.CreatorTool                          XmpText    13  digiKam-4.2.0

Xmp.exif.PixelXDimension                     XmpText     3  800

Xmp.exif.PixelYDimension                     XmpText     3  533

Xmp.digiKam.ImageHistory                     XmpText   1647  <?xml version="1.0"?>

<history version="1">

    <file uuid="e854d7e092d41bc00c1e537af3e7296dafe85809797bbf3f3ff93a48b8d07a5d" type="original">

        <fileParams filePath="/" fileHash="afe85809797bbf3f3ff93a48b8d07a5d" fileSize="12812288" creationDate="2014-07-13T14:52:45"/>

    </file>

    <filter filterName="digikam:LocalContrastFilter" filterDisplayName="Local Contrast Filter" filterVersion="2" filterCategory="reproducible">

        <params>

            <param name="functionId" value="0"/>

            <param name="highSaturation" value="100"/>

            <param name="lowSaturation" value="100"/>

            <param name="randomSeed" value="2940933007"/>

            <param name="stage[0]:blur" value="11"/>

            <param name="stage[0]:enabled" value="true"/>

            <param name="stage[0]:power" value="30"/>

            <param name="stage[1]:enabled" value="false"/>

            <param name="stage[2]:enabled" value="false"/>

            <param name="stage[3]:enabled" value="false"/>

            <param name="stretchContrast" value="true"/>

        </params>

    </filter>

    <file uuid="9265806dd2ed9a362fdd2d9d83da1d3cafe85809797bbf3f3ff93a48b8d07a5d">

        <fileParams fileName="DSC03712.JPG" filePath="/Users/gilles/Pictures/Photos/SALAGOU/2014-07-13/" fileHash="fdb610f5d23b875e575d7fb3d32df0b1" fileSize="4562194"/>

    </file>

    <filter filterName="transform:resize" filterDisplayName="Resize" filterVersion="1" filterCategory="reproducible" branch="true">

        <params>

            <param name="height" value="533"/>

            <param name="width" value="800"/>

        </params>

    </filter>

</history>

Xmp.digiKam.ImageUniqueID                    XmpText    64  a50d3eaae1bc5da03c0c7d159bb30649fdb610f5d23b875e575d7fb3d32df0b1

Gilles Caulier

2017-02-06 10:29 GMT+01:00 g0rak 1 <[hidden email]>:

Hey all,

I'm new to Digikam and looking to move from Picasa.  I've been impressed by Digikam's non-destructive versioning and want to use it to retain my Picasa edits by:

- exporting all edited photos from Picasa

- adding '_v1' to their filenames

- adding Digikam's versioning XML to 'ImageHistory' field in the XMP tag of each edited image

Digikam should then link the edited version with the original, and then hide the original in the thumbnail browser as the original 'version'.

Does anyone know where I can find the specification for Digikam's versioning XML, so I can work out how to write my own XML into the images?  I can see the basic structure after performing a resize etc., but ideally I want to keep things simple and record each edited version as 'Edited by Picasa' without having to work out what the edit actually was.  

I'm not sure if it's possible to define a generic 'version' in the XML without specifying a 'filter' and 'parameters' (e.g. a resize with coordinates, etc.), but would like to find out.

If I can get this to work I will happily share my script with the community as there might be others looking to move from Picasa who would like to maintain their edits alongside their originals.

Thanks for your help, 

Simon

[digiKamUser]

That's why I'd like to ensure the XML I create follows any standard that Digikam follows, if possible.  Looking at the .picasa.ini files today confirmed my expectations that it'll be too difficult to convert the the non-destructive editing parameters to those that Digikam use.  We have parameters like:

crop=rect64(fc40570fffff5ae)

filters=finetune2=1,0.526316,0.000000,0.000000,00000000,0.000000;

filters=unsharp2=1,3.000000;

I'll either leave the parameters out completely, and at best, try coping the Picasa params as is, just as a reference.  Some clever nut can have a go at converting them later on using the DB or something!

I'll let you know how I go.  I have to resurrect Eclipse and Java now.  I had a quick look at writing a Kipi plug-in, but I couldn't work out the language and find doco on how to work with it.  I probably need to look harder.

Cheers,

Simon

On 10 February 2017 at 17:57, Gilles Caulier <[hidden email]> wrote:

well parameters will populate the database with these information.

For the moment, it's just informative, but in the future, the goal is to be able to apply same filter on another image by copy and paste from GUI.

So, yes, it can be acceptable, but take a care. Work on test database, in case of you break something.

Your feedback can be interesting if it work to improve import rules in digiKam.

Gilles Caulier

2017-02-10 1:25 GMT+01:00 g0rak 1 <[hidden email]>:

Hey Gilles,

Thank you for replying.  I checked out the namespace link but it didn't give any info on what are the acceptable names for the filters.  For the source code however I could at least what the other filter categories are, such as 'doucmentedHistory.  

Based on this, can I just make up my own filter name, and provide no parameters?  

E.g. below I have made a filter named 'picasa:Picasa', display name 'Edited by Picasa', filter version '1', with a category 'documentedHistory'.

<?xml version="1.0"?>.

<history version="1">.

  <file uuid="4d13dbbff40ae5501c42e6314b8b8f52" type="original">.

    <fileParams fileName="20170103_094034.jpg" filePath="/Users/simon/Photos/2016/Holiday/" fileHash="8838978dccc24c1763b6996fe94bb019" fileSize="4401586" creationDate="2017-01-03T09:40:34"/>.

  </file>.

  <filter filterName="picasa:Picasa" filterDisplayName="Edited by Picasa" filterVersion="1" filterCategory="documentedHistory">.        

    <params>.

    </params>.

  </filter>.

</history>.

If you think it is acceptable to make up filter names, then I will be happy to give this a try.

Kind regards,

Simon

On 7 February 2017 at 05:09, Gilles Caulier <[hidden email]> wrote:

Hi,

The versionning is stored in XMP digiKam namespace :

http://www.exiv2.org/tags-xmp-digiKam.html

Look ImageHistory tag.

In source code, the method which export history to XML data is this one :

https://cgit.kde.org/digikam.git/tree/libs/dimg/imagehistory/dimagehistory.cpp#n491

An example of exported history is given below (with resize tool used) :

$ exiv2 -px DSC03712_1.JPG 

Xmp.tiff.Software                            XmpText    13  digiKam-4.2.0

Xmp.tiff.ImageWidth                          XmpText     3  800

Xmp.tiff.ImageLength                         XmpText     3  533

Xmp.xmp.CreatorTool                          XmpText    13  digiKam-4.2.0

Xmp.exif.PixelXDimension                     XmpText     3  800

Xmp.exif.PixelYDimension                     XmpText     3  533

Xmp.digiKam.ImageHistory                     XmpText   1647  <?xml version="1.0"?>

<history version="1">

    <file uuid="e854d7e092d41bc00c1e537af3e7296dafe85809797bbf3f3ff93a48b8d07a5d" type="original">

        <fileParams filePath="/" fileHash="afe85809797bbf3f3ff93a48b8d07a5d" fileSize="12812288" creationDate="2014-07-13T14:52:45"/>

    </file>

    <filter filterName="digikam:LocalContrastFilter" filterDisplayName="Local Contrast Filter" filterVersion="2" filterCategory="reproducible">

        <params>

            <param name="functionId" value="0"/>

            <param name="highSaturation" value="100"/>

            <param name="lowSaturation" value="100"/>

            <param name="randomSeed" value="2940933007"/>

            <param name="stage[0]:blur" value="11"/>

            <param name="stage[0]:enabled" value="true"/>

            <param name="stage[0]:power" value="30"/>

            <param name="stage[1]:enabled" value="false"/>

            <param name="stage[2]:enabled" value="false"/>

            <param name="stage[3]:enabled" value="false"/>

            <param name="stretchContrast" value="true"/>

        </params>

    </filter>

    <file uuid="9265806dd2ed9a362fdd2d9d83da1d3cafe85809797bbf3f3ff93a48b8d07a5d">

        <fileParams fileName="DSC03712.JPG" filePath="/Users/gilles/Pictures/Photos/SALAGOU/2014-07-13/" fileHash="fdb610f5d23b875e575d7fb3d32df0b1" fileSize="4562194"/>

    </file>

    <filter filterName="transform:resize" filterDisplayName="Resize" filterVersion="1" filterCategory="reproducible" branch="true">

        <params>

            <param name="height" value="533"/>

            <param name="width" value="800"/>

        </params>

    </filter>

</history>

Xmp.digiKam.ImageUniqueID                    XmpText    64  a50d3eaae1bc5da03c0c7d159bb30649fdb610f5d23b875e575d7fb3d32df0b1

Gilles Caulier

2017-02-06 10:29 GMT+01:00 g0rak 1 <[hidden email]>:

Hey all,

I'm new to Digikam and looking to move from Picasa.  I've been impressed by Digikam's non-destructive versioning and want to use it to retain my Picasa edits by:

- exporting all edited photos from Picasa

- adding '_v1' to their filenames

- adding Digikam's versioning XML to 'ImageHistory' field in the XMP tag of each edited image

Digikam should then link the edited version with the original, and then hide the original in the thumbnail browser as the original 'version'.

Does anyone know where I can find the specification for Digikam's versioning XML, so I can work out how to write my own XML into the images?  I can see the basic structure after performing a resize etc., but ideally I want to keep things simple and record each edited version as 'Edited by Picasa' without having to work out what the edit actually was.  

I'm not sure if it's possible to define a generic 'version' in the XML without specifying a 'filter' and 'parameters' (e.g. a resize with coordinates, etc.), but would like to find out.

If I can get this to work I will happily share my script with the community as there might be others looking to move from Picasa who would like to maintain their edits alongside their originals.

Thanks for your help, 

Simon

[Gilles Caulier-4]

yes i think it's fine.

Gilles Caulier

2017-02-10 1:25 GMT+01:00 g0rak 1 <[hidden email]>:

Hey Gilles,

Thank you for replying.  I checked out the namespace link but it didn't give any info on what are the acceptable names for the filters.  For the source code however I could at least what the other filter categories are, such as 'doucmentedHistory.  

Based on this, can I just make up my own filter name, and provide no parameters?  

E.g. below I have made a filter named 'picasa:Picasa', display name 'Edited by Picasa', filter version '1', with a category 'documentedHistory'.

<?xml version="1.0"?>.

<history version="1">.

  <file uuid="4d13dbbff40ae5501c42e6314b8b8f52" type="original">.

    <fileParams fileName="20170103_094034.jpg" filePath="/Users/simon/Photos/2016/Holiday/" fileHash="8838978dccc24c1763b6996fe94bb019" fileSize="4401586" creationDate="2017-01-03T09:40:34"/>.

  </file>.

  <filter filterName="picasa:Picasa" filterDisplayName="Edited by Picasa" filterVersion="1" filterCategory="documentedHistory">.        

    <params>.

    </params>.

  </filter>.

</history>.

If you think it is acceptable to make up filter names, then I will be happy to give this a try.

Kind regards,

Simon

On 7 February 2017 at 05:09, Gilles Caulier <[hidden email]> wrote:

Hi,

The versionning is stored in XMP digiKam namespace :

http://www.exiv2.org/tags-xmp-digiKam.html

Look ImageHistory tag.

In source code, the method which export history to XML data is this one :

https://cgit.kde.org/digikam.git/tree/libs/dimg/imagehistory/dimagehistory.cpp#n491

An example of exported history is given below (with resize tool used) :

$ exiv2 -px DSC03712_1.JPG 

Xmp.tiff.Software                            XmpText    13  digiKam-4.2.0

Xmp.tiff.ImageWidth                          XmpText     3  800

Xmp.tiff.ImageLength                         XmpText     3  533

Xmp.xmp.CreatorTool                          XmpText    13  digiKam-4.2.0

Xmp.exif.PixelXDimension                     XmpText     3  800

Xmp.exif.PixelYDimension                     XmpText     3  533

Xmp.digiKam.ImageHistory                     XmpText   1647  <?xml version="1.0"?>

<history version="1">

    <file uuid="e854d7e092d41bc00c1e537af3e7296dafe85809797bbf3f3ff93a48b8d07a5d" type="original">

        <fileParams filePath="/" fileHash="afe85809797bbf3f3ff93a48b8d07a5d" fileSize="12812288" creationDate="2014-07-13T14:52:45"/>

    </file>

    <filter filterName="digikam:LocalContrastFilter" filterDisplayName="Local Contrast Filter" filterVersion="2" filterCategory="reproducible">

        <params>

            <param name="functionId" value="0"/>

            <param name="highSaturation" value="100"/>

            <param name="lowSaturation" value="100"/>

            <param name="randomSeed" value="2940933007"/>

            <param name="stage[0]:blur" value="11"/>

            <param name="stage[0]:enabled" value="true"/>

            <param name="stage[0]:power" value="30"/>

            <param name="stage[1]:enabled" value="false"/>

            <param name="stage[2]:enabled" value="false"/>

            <param name="stage[3]:enabled" value="false"/>

            <param name="stretchContrast" value="true"/>

        </params>

    </filter>

    <file uuid="9265806dd2ed9a362fdd2d9d83da1d3cafe85809797bbf3f3ff93a48b8d07a5d">

        <fileParams fileName="DSC03712.JPG" filePath="/Users/gilles/Pictures/Photos/SALAGOU/2014-07-13/" fileHash="fdb610f5d23b875e575d7fb3d32df0b1" fileSize="4562194"/>

    </file>

    <filter filterName="transform:resize" filterDisplayName="Resize" filterVersion="1" filterCategory="reproducible" branch="true">

        <params>

            <param name="height" value="533"/>

            <param name="width" value="800"/>

        </params>

    </filter>

</history>

Xmp.digiKam.ImageUniqueID                    XmpText    64  a50d3eaae1bc5da03c0c7d159bb30649fdb610f5d23b875e575d7fb3d32df0b1

Gilles Caulier

2017-02-06 10:29 GMT+01:00 g0rak 1 <[hidden email]>:

Hey all,

I'm new to Digikam and looking to move from Picasa.  I've been impressed by Digikam's non-destructive versioning and want to use it to retain my Picasa edits by:

- exporting all edited photos from Picasa

- adding '_v1' to their filenames

- adding Digikam's versioning XML to 'ImageHistory' field in the XMP tag of each edited image

Digikam should then link the edited version with the original, and then hide the original in the thumbnail browser as the original 'version'.

Does anyone know where I can find the specification for Digikam's versioning XML, so I can work out how to write my own XML into the images?  I can see the basic structure after performing a resize etc., but ideally I want to keep things simple and record each edited version as 'Edited by Picasa' without having to work out what the edit actually was.  

I'm not sure if it's possible to define a generic 'version' in the XML without specifying a 'filter' and 'parameters' (e.g. a resize with coordinates, etc.), but would like to find out.

If I can get this to work I will happily share my script with the community as there might be others looking to move from Picasa who would like to maintain their edits alongside their originals.

Thanks for your help, 

Simon