thumbnail extraction (JPEG)

[thomas kern]

Hello,

i dont know how to extract the thumbnail of an image?
is there a good way to do that cos there arent many articles on the internet
:/
thank you
thomas

 

[thomas kern]

hehe thx chad but i wasnt talking about that (i am not that much noob)

i want to extract the thumbnail from the image.
there is a thumbnail stored in the JPEG i want to extract due to speed
reasons
(much faster than)

with GetThumbnailImage, i have the problem that i have to load the Image
first, thats
a problem because my images have a size of about 2MB each.

regards and thx
thomas

 

[thomas kern]

At any rate, you might be able to use the ImageCodecInfo object

to enumerate through the specific features of the image/jpeg
MIME type and get a binary stream, but I don't know much
about that, so you're on your own.

ok thx anyway.
a digital camera creates a thumbnail of the jpeg and store it in the jpeg
itself.
just have to find out, where and how to get it )

regards
thomas

 

[Stan]

Looks like Chad was right, you just aren't looking (reading) hard enough,

http://msdn.microsoft.com/library/d...emdrawingimageclassgetthumbnailimagetopic.asp

"If the Image object contains an embedded thumbnail image, then this method
retrieves the embedded thumbnail and scales it to the requested size. If the
Image object does not contain an embedded thumbnail image, this method
creates a thumbnail image by scaling the main image."

 

[Michael Mayer]

I wanted to do the same at one point, but never got around to it. I've
saved these two bookmarks to help out, should I ever get around to it. If
you get it working, I'd be greatful if you can e-mail me the results!
http://www.codeproject.com/cs/media/photoproperties.asp
http://www.ba.wakwak.com/~tsuruzoh/Computer/Digicams/exif-e.html

Mike Mayer
http://www.mag37.com/csharp/
(e-mail address removed)