[Insight-users] Reading DICOM set and writing jpeg

[Mathieu Malaterre]

On Tue, Mar 24, 2009 at 2:16 PM, Eduardo - LNCC <camargo at lncc.br> wrote:
> Hi,
>
> I`m  trying to read set of dicom files, extract one slice and write it in
> jpeg file. But the jpeg file is very strange, it appears in low resolution
> (or something like that).
> Could anybody help me? Sorry for my english

...

>   RescalerType::Pointer rescaleFilter = RescalerType::New();
>   rescaleFilter->SetOutputMinimum(0);
>   rescaleFilter->SetOutputMaximum(255);
>   rescaleFilter->SetInput( ExtractFilter->GetOutput() );

You are rescaling arbitrarily to [0,255] to create baseline JPEG 8bits
(lossy) image. You should instead inspect the histogram of pixel
values to get a better range. Or at least read the Window Center /
Window Width (0028,1050-1051) value to get an idea what is a correct
scalar range.

HTH
-- 
Mathieu