forum.coppermine-gallery.net

No Support => Feature requests => Topic started by: DJMaze on February 25, 2008, 01:26:30 am

Title: Advanced Metadata (Exif, GPS, IPTC, etc.)
Post by: DJMaze on February 25, 2008, 01:26:30 am

(Devs are already informed earlier)
Currently I'm researching Jpeg Metadata for a complete new metadata reader.
Because Exifer (and the other PHP lib PHP JPEG Metadata Toolkit) are old and unmaintained.

Due to that i discovered that Exifer, and even PHP Exif extension, have serious issues with array data.

For example a newer Canon model (EOS/1D maybe?) which has several MakerNote fields that contain a large array with integers.
For example the ColorBalance1 tag contains 692 integers in a EOS 40D MakerNote.
In total the EOS 40D contains 16 arrays from 3 up till 692 entries inside an array!

Or what about the latest and greatest Sony A700?

So you could experience Exifer crashing on that.

However, i wonder how useful some metadata extraction is for people.
Therefore here's a list of options and you decide "which" features you request to be implemented.

Note:
1) Marked as bold is already getting implemented.
2) Strike through will be abandoned

• APP0 => JFIF information http://www.sno.phy.queensu.ca/~phil/exiftool/TagNames/JFIF.html
• APP1 => Exif (including GPS and MakerNotes)
• APP1 => XMP data http://www.sno.phy.queensu.ca/~phil/exiftool/TagNames/XMP.html
• APP2 => ICC_Profile http://www.sno.phy.queensu.ca/~phil/exiftool/TagNames/ICC_Profile.html
• APP3 => Kodak Meta
• APP5 => Ricoh Meta
• APP6 => Jpeg EPPIM
• APP8 => Jpeg SPIFF
• APP10 => PhotoStudio Unicode comment
• APP12 => PictureInfo/Ducky http://www.sno.phy.queensu.ca/~phil/exiftool/TagNames/APP12.html
• APP13 => Photoshop data (formerly IPTC)
• APP14 => Adobe DNG
• APP15 => GraphicConverter
• COM => Comment

Althought IPTC is phasing out, you might still use it?

Title: Re: Advanced Metadata (Exif, GPS, IPTC, etc.)
Post by: Joachim Müller on February 25, 2008, 08:40:04 am

Professional photographers love IPTC, but it has got a serious drawback: lacking unicode support.

Title: Re: Advanced Metadata (Exif, GPS, IPTC, etc.)
Post by: tassu on October 04, 2012, 08:18:54 pm

Time has gone. Is there any development about this?

Title: Re: Advanced Metadata (Exif, GPS, IPTC, etc.)
Post by: tassu on October 26, 2012, 04:27:15 pm

Quote from: Joachim Müller on February 25, 2008, 08:40:04 am

Professional photographers love IPTC, but it has got a serious drawback: lacking unicode support.

I live in Finland, and we have these ä and ö letters. I`ve been facing a lot of problems with those letters when exporting from Lightroom. With several gallery softwares.

BUT, same letters are ok in Facebook? How they have solved it.

Title: Re: Advanced Metadata (Exif, GPS, IPTC, etc.)
Post by: Αndré on October 30, 2012, 02:33:47 pm

Quote from: tassu on October 26, 2012, 04:27:15 pm

same letters are ok in Facebook? How they have solved it.

I guess they convert it to unicode if it isn't already unicode, but that's just an assumption.