Hi Andrea, 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. 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) 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