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extract exif thumbnail

Posted: 2010-03-23T20:35:56-07:00
by baibaichen
Does IM support extracting exif thumbnail from tiff and jpeg?

I search the forum and documentation but can't find solution.

Thanks
Chang

Re: extract exif thumbnail

Posted: 2010-03-24T05:21:41-07:00
by magick
Assume your EXIF profile is embedded in an JPEG image. Use this command:
  • convert image.jpg thumbnail:thumb.jpg

Re: extract exif thumbnail

Posted: 2010-03-24T19:18:15-07:00
by baibaichen
  • convert image.jpg thumbnail:thumb.jpg
[/quote]

it doesn't work

I took a look at code, it looks like that covert doesn't process the last parameter, it always treat it as output filename.

-Chang

Re: extract exif thumbnail

Posted: 2010-03-24T19:23:44-07:00
by fmw42
can you post a link to an example image so that the IM folks can test with it.

Re: extract exif thumbnail

Posted: 2010-04-05T23:07:56-07:00
by baibaichen
The JPEG file that i used is very popular, and comes from Nikon D70s, I can extract the exif thumbnail from jhead with the same file.

where is the documentation about thumbnail:

thanks

Re: extract exif thumbnail

Posted: 2010-04-06T06:02:02-07:00
by snibgo
"thumbnail:" is documented on http://www.imagemagick.org/Usage/formats/

We don't all have a Nikon D70s, so posting your file will help diagnostics. When I use the command on an image from my camera:

Code: Select all

convert PICT0001.JPG thumbnail:th0001.jpg
I get the expected image, which is the (rather horrible) thumbnail created by my camera.

Re: extract exif thumbnail

Posted: 2010-04-06T09:30:37-07:00
by fmw42
what version of IM are you using? perhaps you need an upgrade to make thumbnail: work properly?