[Insight-users] Re: Problem with lossless JPEG compression in GDCMImageIO

[Pechin Lo]

I'm using ITK 3.2.0
Should I switch to 3.4 and try again?

On 9/25/07, Mathieu Malaterre <mathieu.malaterre at gmail.com> wrote:
>
> On 9/25/07, Steve M. Robbins <steve at sumost.ca> wrote:
> > On Mon, Sep 24, 2007 at 11:50:05PM +0200, Pechin Lo wrote:
> > > After some tweaking around, I found out that JPEG compression works
> provided
> > > that the minimum difference between two pixels is 2.
> > > For example, if I have an image that only consists of n and n+1, the
> saved
> > > image will only contains the value n.
> > > However, if the image consists of value n and n+2, then the saved
> image will
> > > contains both n and n+2.
> > > In other words, the image will stores fine if I multiply it by a
> factor of
> > > 2.
> > >
> > > Can someone please tell me why is this happening?
> >
> > I'm not familiar with the code in question, but is it possible
> > that you're using a lossy JPEG compression?
>
> Hi all,
>
>
>   Could you please let me know if you are using ITK 3.2 / ITK 3.4 or CVS ?
>
> Thanks
>
> --
> Mathieu
> Ps: 3.4 and CVS should *not* produce this weird behavior.
>



-- 
Pechin Lo Chien Pau
Ph.d. Student
Department of Computer Science (DIKU)
University of Copenhagen
Universitetsparken 1, Office S226
DK-2100 Copenhagen, Denmark
Phone: +45 3532 1433
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