Re: [Gdcm2] Buffer problem in Qt environment

[Mathieu M. <mat...@gm...>]

Sylvain,

On Tue, Jun 2, 2009 at 4:54 PM, Sylvain ADAM<syl...@ho...> wrote:
> Okay... My mistake... I haven't quite looked at what I've done.
>
> Actually the code is working when I'm instanciating a char* like this:
>
> char *buffer = new char[gimage.GetBufferLength()];
>
> I'm still trying to find the right format for my QImage, though, 'cause I've
> token an RGB16 format, I can see my dicom image but it's weird.

Everything is fine since you are passing the *whole* buffer. You can
see the 'char*' as if it was simply a generic void* pointer in C.
GetBufferLength (see documentation) will return the size of
dimX*dimY*sizeof(pixel=)*numberofpixel

So simply do:

QImage *imageQt = new QImage(buffer2, dimX, dimY, QImage::Format_RGB888);

You should be extremely careful on how you write this code, as it is
the most error-prone part. You absolutely need to check the value from
image.GetPixelFormat().GetNumberOfSamples and
image.GetPhotometricInterpretation to avoid doing any kind of mistake.


> By the way, does everyone know if there's a way to access the dicom pixel
> information for a known location (i, j) ?

Yes, build a QImage and use the API :)


HTH
-- 
Mathieu