https://bugs.kde.org/show_bug.cgi?id=489279
--- Comment #6 from Gerry Helfrich <ghelfrich...@yahoo.com> --- Let me give you additional background on my pictures, and what I have been able to uncover since my last note. I have been using Picasa for many years for my photo management and face tagging. But Picasa's ability to write face tag info in the picture metadata region never advanced beyond the experimental stage. So, I have not used it to write this data to the picture metadata. Thus, my face tag info has been contained in the proprietary structure of Picasa. So recently I decided to migrate over to digiKam for my photo management and face tagging. To not lose or have to recreate my face tags in digiKam, I decided to use the exiftool along with the "picasa_faces.config" config_file module available for the exiftool to wrote Picasa proprietary face tag into both the MWGRegion and MPRegion of my pictures. Over the last year I have slowly been using the exiftool/picasa_faces.config tool to update this face tag info into these metadata regions for my 10k+ pictures located in 400 folders+. And now I've been setting up collections for my pictures in digiKam which is when I saw these 2 pictures were missing from digiKam. That gives you some info on my pictures. Now let me give you some info on what I was able determine through my additional testing last evening. Now that you know about my updating face tag regions of my pictures, I started to wonder if the metadata face tag updates weren't somehow related to the issue I was seeing. So, I decided to use the exiftool tool to delete the face tag regions for these 2 pictures to see if digiKam would now discover them. I deleted the face tag region for both these regions and digiKam automatically discovered them within a few seconds. I then used the exiftool/picasa_faces.config tool to write the face tag info back into the metadata regions to see what digiKam would do. I expected digiKam to not discover these 2 pictures again when I did so. To my surprise, digiKam did actually discover these 2 pictures again. So, I was really perplexed because I was seeing different results than what I was expecting. I'm not sure why I did this, but I decided to rename one of these pictures. And as soon as I did, digiKam did not rediscover the picture. I repeated the same exercise for the 2nd picture, except this time I decided to move the picture to a different folder rather than rename it. Once again, after moving the picture, digiKam didn't rediscover the picture. And to be specific, I was using exiftool v12.5 and the latest (2016) version of the picasa_faces.config add-in tool. So, here is the bottom-line of what I saw. Certain pictures, when their face tag info has been updated with the exiftool v12.5 and the (2016) version of the picasa_faces.config add-in tool led to digiKam not discovering the picture. It appears these pictures are actually initially discovered by digiKam, but then not rediscovered by digiKam when something about the picture has changes (ie. rename/move) Then I thought I should retry writing the Picasa face tag info using the latest exiftool v12.8.7. So, I repeated the same steps mentioned above using this latest version. Jumping to the conclusion, when I rewrote the Picasa face tag info with this version of the exiftool, digiKam quickly rediscovered these pictures. And when I moved/renamed these pictures, digiKam rediscovered them as well. So, it appears something about how/what the 12.5 version did to write the Picasa face tag info to the picture metadata face tag regions interferes with certain pictures not being routinely discovered by digiKam. But whatever the exiftool was doing in v12.5 was changed in a later version and no longer interferes with them being routinely discovered by digiKam. I now understand how I can recover when I discover any further pictures digiKam is not rediscovering. What greatly concerns me is I am likely to see additional pictures initially discovered not be rediscovered by digiKam when they are renamed, or more likely moved sometime in the future, probably years down the road. I used the exiftool v12.5 tool to add the Picasa tag into the face tag regions for all 10+ of my pictures. I don't plan to redo writing the Picasa face tag info again using exiftool v12.8.7. Bottom line is this. There is still something in how/what the exiftool v12.5 wrote to the 2 picture face tag metadata regions (and likely more) that trips up the digiKam picture discovery engine. Please let me know how I can help figure out what is going on here. :) -- You are receiving this mail because: You are watching all bug changes.
