This is normal. This may be because there are several decoders possible
for
decoding JPEG2000 encoded image which may vary slightly. Also, there is a
possibility that the commercial tool may have appended its own information to
the image.
--
Nishit Jain
IIT Guwahati
"Real success is finding your lifework in the work that you love."
> Message: 1
> Date: Thu, 16 Jun 2005 08:06:16 -0000
> From: "eflame1979" <eflame1979@efla...>
> Subject: Query in Image compression using jpeg 2000
>
> It is normal get a file size smaller than the initial image after jp2
> compression. But using a commercial tool save the jp2 image as a the
> format of the original image increases the final file size of the image
> to be greater than the original image. Is this normal?
>
> eg
> initial file size, format uncompressed tiff: 300kb
> after jp2 compression of 1bit/pixel : 4kb
> after using commercial tool to save the jp2 image back to tiff: 321kb
>
> 300kb -> 321kb??
> why is there an increase in file size? Is it a common phenomenon?
> Can anyone explain?
>
> Thank you.
> -Arvin
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