Version: 1.4.0 OS: Linux Here is link to Metadata Working Group specification (=MWG) http://www.metadataworkinggroup.org/pdf/mwg_guidance.pdf 1. Please start with a jpg image without comment in any metadata field. 2. On command line : exiftool -MWG:Description="Julie" image.jpg 3. The field EXIF:ImageDescription and XMP:Description have been written. 4. When image.jpg is opened in Digikam, the caption (in French "légende") is empty. In section 3.1.3 "It (the consumer) MUST reconcile between different forms of metadata in the image.", and in section 5.2, the listed tags are Exif:ImageDescription IPTC:Caption XMP-dc:description[“x-default”]. Digikam MUST reconcile tags, and prefer EXIF value. Reproducible: Didn't try Steps to Reproduce: 1. Please start with a jpg image without comment in any metadata field. 2. On command line : exiftool -MWG:Description="Julie" image.jpg 3. The field EXIF:ImageDescription and XMP:Description have been written. Actual Results: 4. When image.jpg is opened in Digikam, the caption (in French "légende") is empty. Expected Results: In section 3.1.3 "It (the consumer) MUST reconcile between different forms of metadata in the image.", and in section 5.2, the listed tags are Exif:ImageDescription IPTC:Caption XMP-dc:description[“x-default”]. Digikam MUST reconcile tags, and prefer EXIF value. OS: Linux (x86_64) release 2.6.35-25-generic Compiler: cc
Created attachment 57554 [details] File with XMP-dc:Description
Additional steps: 5. I added the IPTC caption to my image file, using command line : exiftool -IPTC:Caption-Abstract="Julie" 20050417_0013.jpg (now the tags are synchronized : Exif:ImageDescription IPTC:Caption XMP-dc:description[“x-default”] ) 6. Inside digikam, I did (in French) "Album/Lire à nouveau les métadonnées à partir des images". Probable translation is "Album/Reread metadata from image files". 7. Digikam is silently causing data loss by removing IPTC:Caption and XMP-dc:description.
NOTE : In your jpg test image, Exif description is patched but not XMP : [gilles@localhost test]$ exiv2 -pa 267262.jpg |grep Julie Exif.Image.ImageDescription Ascii 6 Julie [gilles@localhost test]$ exiv2 -pa 267262.jpg Exif.Image.ProcessingSoftware Ascii 14 digiKam-1.4.0 Exif.Image.ImageDescription Ascii 6 Julie Exif.Image.Make Ascii 24 OLYMPUS IMAGING CORP. Exif.Image.Model Ascii 17 u40D,S500,uD500 Exif.Image.Orientation Short 1 top, left Exif.Image.XResolution Rational 1 314 Exif.Image.YResolution Rational 1 314 Exif.Image.ResolutionUnit Short 1 inch Exif.Image.Software Ascii 32 Version 1.0 Exif.Image.DateTime Ascii 20 2005:04:17 15:03:10 Exif.Image.YCbCrPositioning Short 1 Co-sited Exif.Image.ExifTag Long 1 828 Exif.Photo.ExposureTime Rational 1 1/60 s Exif.Photo.FNumber Rational 1 F4.1 Exif.Photo.ExposureProgram Short 1 Auto Exif.Photo.ISOSpeedRatings Short 1 100 Exif.Photo.ExifVersion Undefined 4 2.21 Exif.Photo.DateTimeOriginal Ascii 20 2005:04:17 15:03:10 Exif.Photo.DateTimeDigitized Ascii 20 2005:04:17 15:03:10 Exif.Photo.ComponentsConfiguration Undefined 4 YCbCr Exif.Photo.ExposureBiasValue SRational 1 0 EV Exif.Photo.MaxApertureValue Rational 1 F3.1 Exif.Photo.MeteringMode Short 1 Multi-segment Exif.Photo.LightSource Short 1 Unknown Exif.Photo.Flash Short 1 Yes, auto, red-eye reduction Exif.Photo.FocalLength Rational 1 11.5 mm Exif.Photo.MakerNote Undefined 5070 (Binary value suppressed) Exif.MakerNote.Offset Long 1 1274 Exif.MakerNote.ByteOrder Ascii 3 II Exif.Olympus.SpecialMode Long 3 Normal Exif.Olympus.Quality Short 1 High Quality (HQ) Exif.Olympus.Macro Short 1 Off Exif.Olympus.BWMode Short 1 Off Exif.Olympus.DigitalZoom Rational 1 None Exif.Olympus.FocalPlaneDiagonal Rational 1 715/100 Exif.Olympus.LensDistortionParams SShort 6 0 0 0 0 0 0 Exif.Olympus.CameraType Ascii 6 D4221 Exif.Olympus.CameraID Undefined 32 OLYMPUS DIGITAL CAMERA Exif.Olympus.Equipment Undefined 156 (Binary value suppressed) Exif.Olympus.CameraSettings Undefined 662 (Binary value suppressed) Exif.Olympus.RawDevelopment Undefined 30 2 0 0 0 7 0 4 0 0 0 48 49 48 48 11 1 3 0 1 0 0 0 0 0 0 0 0 0 0 0 Exif.Olympus.ImageProcessing Undefined 324 (Binary value suppressed) Exif.Olympus.FocusInfo Undefined 3638 (Binary value suppressed) Exif.Photo.FlashpixVersion Undefined 4 1.00 Exif.Photo.ColorSpace Short 1 sRGB Exif.Photo.PixelXDimension Long 1 800 Exif.Photo.PixelYDimension Long 1 600 Exif.Photo.InteroperabilityTag Long 1 6352 Exif.Iop.InteroperabilityIndex Ascii 4 R98 Exif.Iop.InteroperabilityVersion Undefined 4 1.00 Exif.Photo.FileSource Undefined 1 Digital still camera Exif.Photo.CustomRendered Short 1 Normal process Exif.Photo.ExposureMode Short 1 Auto Exif.Photo.WhiteBalance Short 1 Auto Exif.Photo.DigitalZoomRatio Rational 1 1.0 Exif.Photo.SceneCaptureType Short 1 Standard Exif.Photo.GainControl Short 1 Low gain up Exif.Photo.Contrast Short 1 Normal Exif.Photo.Saturation Short 1 Normal Exif.Photo.Sharpness Short 1 Normal Exif.Image.PrintImageMatching Undefined 528 (Binary value suppressed) Exif.Thumbnail.Compression Short 1 JPEG (old-style) Exif.Thumbnail.XResolution Rational 1 72 Exif.Thumbnail.YResolution Rational 1 72 Exif.Thumbnail.ResolutionUnit Short 1 inch Exif.Thumbnail.JPEGInterchangeFormat Long 1 6476 Exif.Thumbnail.JPEGInterchangeFormatLength Long 1 8458 Iptc.Application2.Program String 7 digiKam Iptc.Application2.ProgramVersion String 5 1.4.0 Iptc.Application2.DateCreated Date 8 2005-04-17 Iptc.Application2.TimeCreated Time 11 15:03:10+00:00 Xmp.xmp.CreatorTool XmpText 13 digiKam-1.4.0 Xmp.xmp.CreateDate XmpText 19 2005-04-17T15:03:10 Xmp.xmp.MetadataDate XmpText 19 2005-04-17T15:03:10 Xmp.xmp.ModifyDate XmpText 19 2005-04-17T15:03:10 Xmp.tiff.Software XmpText 13 digiKam-1.4.0 Xmp.tiff.DateTime XmpText 19 2005-04-17T15:03:10 Xmp.exif.DateTimeOriginal XmpText 19 2005:04:17 15:03:10 Xmp.photoshop.DateCreated XmpText 19 2005-04-17T15:03:10 Gilles Caulier
Git commit be683c328a9df0a418a407e3a56dc5bf73b14f14 by Gilles Caulier. Committed on 15/03/2011 at 09:54. Pushed by cgilles into branch 'master'. do not forget to handle Exif.Image.Description when comment is scanned from Exif metadata BUGS: 267262 M +15 -3 libkexiv2/kexiv2exif.cpp http://commits.kde.org/libkexiv2/be683c328a9df0a418a407e3a56dc5bf73b14f14
I have encountered a problem with the last commit here: From my camera, the Exif ImageDescription field is always set to "SONY DSC", so all new photos have this annoying comment. No problems with other manufacturers? We could install a blacklist, marking "SONY DSC" as nonsense content.
Git commit 2ff60c357314ed68d3e1481a6a0b45ee785d6a2e by Marcel Wiesweg. Committed on 17/04/2011 at 12:09. Pushed by mwiesweg into branch 'master'. Add blacklist for nonsense values in Exif.Image.ImageDescription (Sony cameras) CCBUG: 267262 M +7 -1 libkexiv2/kexiv2exif.cpp http://commits.kde.org/libkexiv2/2ff60c357314ed68d3e1481a6a0b45ee785d6a2e
All of my captions in digiKam are coming up as "OLYMPUS DIGITAL CAMERA " for my Olympus Stylus 1030SW. Any chance that this string can be blacklisted too?
Sure. I believe there's a release freeze for KDE atm, will commit later.
Git commit cb33be41841e62bff20f447ae4e3d42979584df9 by Marcel Wiesweg. Committed on 04/07/2012 at 21:43. Pushed by mwiesweg into branch 'master'. Blacklist nonsense value in Exif.Image.ImageDescription for Olympus cameras M +1 -0 libkexiv2/kexiv2exif.cpp http://commits.kde.org/libkexiv2/cb33be41841e62bff20f447ae4e3d42979584df9