Re: Extracting Exif data and thumbnails from image files

[David Gibbs <david@xxxxxxxxxxxx>]

Rob Dixon wrote:
>> Information about exif can be found at http://www.exif.org.
> Many thanks - I had forgotten this - will investigate.

Google is your friend :)

>> Thumbnails can't be 'extracted', as far as I know ...
> I thought that I had read that they are stored in the header of the
> image file but I cannot remember where!

I'm no expert, but I don't think so ... there always is a delay when I
pull up a thumbnail view in Windoze on folder while it builds the
thumbnails.

Of course I could be wrong.

>> you have to create
>> your own smaller sized version of the image.   I'm not sure you could do
>> it easily in RPG, although I suspect there are a number of C libraries
>> you could investigate porting that should be easy enough to call or bind.
> I think that it would be too slow do create them repeatedly on the fly. 
> I already have ceated my own in IrfanView in batch on my PC and stored
> them in the IFS, but wondered if this was unnecessary step.

First time, yes ... but if you stored the thumbnails in a cache, or
along side the original, it would only be a one time hit.

david

-- 
David Gibbs
david@xxxxxxxxxxxx

Receipt of this message does not grant you permission to send me
Unsolicited Commercial Email