On 22 Feb 2007 14:57:40 EST, Mike Amling <spamonly@allspam.com> wrote:

>> Not a bad idea, but you do appreciate that a JPG file uses compression
>> so any altered pixels are not necessarily the same after the image is
>> saved.
>
> I think it's OK if they're different, but there would be a problem if
>the compression caused the changes to be lost completely.

Compression does cause total loss of some data. The only way I see to
use the file is to save it, and then use the saved file. If the file
is ever resaved as a jpg, it would most likely be different.

--
Zilbandy