advantages and problems with the JPEG format starting on page 17.
even to a non-expert.
> On Mar 21, 2008, at 12:36 PM, Gabriel Landini wrote:
> > On Friday 21 March 2008, RES08 wrote:
> >> Hello, im extremely new to using imagej and i was just wondering
> >> if it is
> >> better to use images saved as TIFFs or JPEG? At the minute the
> >> images im
> >> using are saved as JPEGs on the camera and computer, however
> >> before using
> >> them in imageJ i save them as TIFFs!
> >
> > Point 4 in here tells you why one should not use jpegs in image
> > analysis:
> >
http://imagejdocu.tudor.lu/imagej-documentation-wiki/faq/what-
> > should-i-do-before-start-using-imagej-in-my-project
> >
> > If you already have jpegs, your images are already lossy and the
> > only solution
> > is to grab images again.
> >
> > Cheers
> >
> > Gabriel
>
> This is conventional wisdom among those of us who endured low
> resolution, low quality images of the past. Without knowing more
> about the application, the imaging setup, and the objects being
> imaged, it's impossible to say.
>
> As a general rule, if you are treating your images as collections of
> pixels which happen to be packed together in a fairly arbitrary way,
> then tiff will be better than jpeg. If, on the other hand, you are
> analyzing large scale structures, then jpeg *may* be appropriate.
>
> --
> Kenneth Sloan
>
[hidden email]
> Computer and Information Sciences +1-205-934-2213
> University of Alabama at Birmingham FAX +1-205-934-5473
> Birmingham, AL 35294-1170
http://KennethRSloan.com/Joel B. Sheffield, Ph.D.