I normally use exiftool to compare what imaging is producing. The htmldump is quite useful. I thought you had to create the tag in Java, but if you can use other tools and it's easier for you, then that might be the best option.
Otherwise you can create pretty much any other metadata tag you'd like with some Java coding. ________________________________ From: andrea antonello <andrea.antone...@gmail.com> To: Commons Users List <user@commons.apache.org> Sent: Thursday, 26 April 2018 7:15 PM Subject: Re: [imaging] Comment tag problem Hi Bruno, > The EXIF tags in imaging should match what's in this page: > https://sno.phy.queensu.ca/~phil/exiftool/TagNames/EXIF.html > > Which contains the XPComment and UserComment tags you mentioned, but no > equivalent to the other comment one. this is quite inetersting. Actually I have been told that the command: exiftool -comment='mycomment' creates exaclty the comment I am not able to reproduce. Do you know what that is? > If you really need to match that tag, then I think you should be able to > create your own custom metadata entry. > > I think [1] the ExifRewriter and its test class have some code that shows how > to rewrite metadata. Find the directory (TiffOutputDirectory.java) with the > metadata fields, perhaps remove the UserComment/XPComment if necessary, and > then add a new field (TiffOutputField.java), with your metadata tag > (TagInfo.java) I will try again. I tried already that path, but since it asks me for a tag (integer) I then end up to have it named as the tag I am trying to substitute... Thanks, Andrea > > > Hope that helps, > Bruno > > > [1] > https://github.com/apache/commons-imaging/blob/master/src/main/java/org/apache/commons/imaging/formats/jpeg/exif/ExifRewriter.java > > ________________________________ > From: andrea antonello <andrea.antone...@gmail.com> > To: Commons Users List <user@commons.apache.org> > Sent: Thursday, 26 April 2018 1:46 AM > Subject: Re: [imaging] Comment tag problem > > > > Hi Bruno, > thanks for your reply. > >> I think you tried to include screenshots? If so, it doesn't work very well >> in this mailing list. > > > ohh, I didn't figure and didn't notice. > >> >> Could you try adding as attachment, or upload them, or use plain text to >> describe the issue? I recently had to work on the tags for some TIFF & JPEG >> metadata in [imaging], so hopefully we will be able to locate the right tag. > > > Fantastic. I investigated further but am still not able to solve this. > > The tag I would like to update is one that produces (at least this is > what I read in the imagemagick image info) a section > > Properties: > > and under start section I find > > comment: > GEO-Information,46.5640616313:11.523790723,46.5640616313:11.5093674258,46.5585048222:11.523790723,46.5585048222:11.5093674258,0.000000 > > The most similar result I have been able to produce with the tags is: > > exif:UserComment:GEO-Information,46.5640616313:11.523790723,46.5640616313:11.5093674258,46.5585048222:11.523790723,46.5585048222:11.5093674258,0.000000 > > and > > exif:WinXP-Comments:GEO-Information,46.5640616313:11.523790723,46.5640616313:11.5093674258,46.5585048222:11.523790723,46.5585048222:11.5093674258,0.000000 > > both not the same as what i am looking for. > > > I have been able to print the following information through an > application called exifprobe: > > @0x0000002=2 : <JPEG_COM> length 137: > ''GEO-Information,46.5640616313:11.523790723,46.5640616313:11.5093674258,46.5585048222:11.523790723,46.5585048222:11.5093674258,0.000000\0'' > @0x000008d=141 : <JPEG_APP0> 0xffe0 length 16, 'JFIF' > @0x0000096=150 : Version = 1.1 > @0x0000098=152 : Units = 'dots/inch' > @0x0000099=153 : Xdensity = 96 > @0x000009b=155 : Ydensity = 96 > @0x000009d=157 : XThumbnail = 0 > @0x000009e=158 : YThumbnail = 0 > @0x000009e=158 : </JPEG_APP0> > @0x000009f=159 : <JPEG_DQT> length 67 > @0x00000e4=228 : <JPEG_DQT> length 67 > @0x0000129=297 : <JPEG_SOF_0> length 17, 8 bits/sample, > components=3, width=1608, height=901 > @0x000013c=316 : <JPEG_DHT> length 31 table class = 0 table id = 0 > @0x000015d=349 : <JPEG_DHT> length 181 table class = 0 table id = 1 > @0x0000214=532 : <JPEG_DHT> length 31 table class = 1 table id = 0 > @0x0000235=565 : <JPEG_DHT> length 181 table class = 1 table id = 1 > @0x00002ec=748 : <JPEG_SOS> length 12 start of JPEG data, 3 > components 1448808 pixels > @0x006b1a4=438692 : <JPEG_EOI> JPEG length 438694 > > So I think this (JPEG_COM) is not an exif tag as I had been told. I am > guessing this is reflected by the library's ComSegment class, but I > could not find any documentation or testcase which would tell me what > it is and how to rewrite/update it. > > Any help is most appreciated, > Thanks, > > Andrea > > > > >> >> CheersBruno >> >> >> From: andrea antonello <andrea.antone...@gmail.com> >> To: Commons Users List <user@commons.apache.org> >> Sent: Wednesday, 25 April 2018 1:56 AM >> Subject: [imaging] Comment tag problem >> >> Hi, I need some help to find the right tag to use to recreate a tag in a >> jpeg file. >> >> Here is the output of the info given by ImageMagick: >> >> >> >> The tag I need should be under "Properties" >> and be named: comment >> >> I have tried to use user_comment and xpcomment, but they produce something >> different, like: >> >> >> >> Can anyone tell me which tag I can use to generate the "comment" tag? >> >> Thanks for any hint, >> Best regards, >> Andrea >> >> >> > > --------------------------------------------------------------------- > To unsubscribe, e-mail: user-unsubscr...@commons.apache.org > For additional commands, e-mail: user-h...@commons.apache.org > > --------------------------------------------------------------------- > To unsubscribe, e-mail: user-unsubscr...@commons.apache.org > For additional commands, e-mail: user-h...@commons.apache.org > --------------------------------------------------------------------- To unsubscribe, e-mail: user-unsubscr...@commons.apache.org For additional commands, e-mail: user-h...@commons.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: user-unsubscr...@commons.apache.org For additional commands, e-mail: user-h...@commons.apache.org
