On the way to victory!

Hi again,

Just spent many hours with the Exif spec and a downloaded picture.

I managed to follow through the picture file using Exif specs, and

a) I can strip out the Exif specific parts, leaving only standard JPEG data 
(not sure if it needs some new headers instead)

b) I found the thumbnail inside the picture. HOWEVER - the thumbnail is 
uncompressed :-) It is a raw 128x96 image. Lots of Exif fields describing how 
to reconstruct this image. It is, as is needed for thumbnail preview, in the 
beginning of the Exif file.

Since the thumbnail is raw, you could slap on .ppm headers and use that, most 
viewer programs don't mind. I think the CL18 driver does that.

Tomorrow I will try stripping the Exif to bare JPEG and see if my viewer apps 
stop crashing :-)

All the best!
Dennis