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Date Picture Taken of the photo is empty

H Paul
Ranch Hand

Joined: Jul 26, 2011
Posts: 471
    
    4
Hi & Thanks,

Basically, I have a camera photo. I put a label on it and save it.
After I saved, the attribute Date Picture Taken of the photo is empty when I check the photo with window explorer.

What is the issue here?


Tony Docherty
Bartender

Joined: Aug 07, 2007
Posts: 2310
    
  49
The date information is held in the meta data of the file. I'm not sure how this can be set but I know there are free Java libraries for reading the data such as http://code.google.com/p/metadata-extractor/. Sorry I can't be of more help other than suggesting you google for details on how to set the meta data.
H Paul
Ranch Hand

Joined: Jul 26, 2011
Posts: 471
    
    4
Thanks Tony,

Download MetadataExtractor and used it. I noticed:

Before saved (using the code posted) Exif information of the camera photo are there.

After saved (using the code posted) Exif information of the camera photo are NOT longer there.

Is there alternative to using javax.imageio.ImageIO?
Carey Brown
Ranch Hand

Joined: Nov 19, 2001
Posts: 180

Not sure if your creating a platform independent application, but if not, there is a great command line tool (free) called exiftool that you can exec(). I've found this tool to be more robust and complete than metadata-extractor. But of course it's not a java library.
H Paul
Ranch Hand

Joined: Jul 26, 2011
Posts: 471
    
    4
With the java code posted as I need to put a label over the picture, the tag DateTimeOriginal which is Date Taken Picture of the photo jpg file is no longer there.

I try to use exiftool to add that tag (as it's a new tag as the existing one is gone), I could not see what the syntas is.

-To mod the existing tag
exiftool "-DateTimeOriginal+=5:10:2 10:48:0" mypicture.jpg

-To add the new tag DateTimeOriginal, what is the syntax? Could not figure out.
Tony Docherty
Bartender

Joined: Aug 07, 2007
Posts: 2310
    
  49
Read section 5 of the tools FAQ at http://www.sno.phy.queensu.ca/~phil/exiftool/faq.html
H Paul
Ranch Hand

Joined: Jul 26, 2011
Posts: 471
    
    4
1. Thanks Tony & Carey,
2. Used & OK. (use java code to put a label and exif to add dateTimeOriginal)

exiftool -exif:dateTimeOriginal="2014:01:01-00:00:00" A.JPG
 
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