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

[Steve M. Robbins]

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?

-Steve
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