问题
I have an image containing ITPC data and use the following command to extract the IPTC as textual data:
convert image.jpg IPTCTEXT:iptc.txt
The problem is that this seems to be using entities for "special characters":
2#120#Caption="Beschreibung für den Import aus IPTC"
Actually it should be "für" here. But instead of getting the correct entity ü for the "ü" character i get two entities (probably both bytes of the UTF-8 encoded character got transformed to entites separated). And these two entites i cannot parse correctly.
Is there any way to get the correct entity or disable the entities completely returning UTF-8 characters?
Edit: I tried parsing the entities using StringEscapeUtils.unescapeXml in Java but i get two characters ("ü") instead of the "ü" as both entities are unescaped separated.
Edit2: Example image here: http://fs1.directupload.net/images/150615/5eiv6wwf.jpg
回答1:
The most reliable metadata package is IMHO exiv2 (http://exiv2.org/; available in all Linux distros, Windows, and not sure about Mac binaries).
See http://paste.fedoraproject.org/232538/34459066/ for results. ImageMagick is for metadata purposes not that great, I am afraid.
回答2:
I am not sure why you are seeing something different from me. I am running ImageMagick 6.9.1-4 on a Mac under OS X.
If I do this:
identify -format "%[IPTC:2:120]" http://fs1.directupload.net/images/150615/5eiv6wwf.jpg
I get this:
Beschreibung für den Import aus EXIF
And if I hex dump that, I get this:
I think it may be related to your Terminal's locale settings - although I don't know why it still happens when you redirect to a file. Have you tried things like:
LC_CTYPE=C identify -format "%[IPTC:2:120]" http://fs1.directupload.net/images/150615/5eiv6wwf.jpg | od -xc
来源：https://stackoverflow.com/questions/30848923/extract-iptc-using-imagemagick-without-entities-but-utf-8