[vtkusers] binary image format

Dženan Zukić dzenanz at gmail.com
Sat Mar 24 03:38:35 EDT 2012


Try this: http://www.vtk.org/Wiki/VTK/Examples/Cxx/Images/ImageValueRange
or this:
http://vtk.1045678.n5.nabble.com/Scale-Image-Values-to-0-1-tp4808465p4809978.html

2012/3/24 oka <oka at bpe.es.osaka-u.ac.jp>

> Dear Zukic,
>
> Thank you for your comment.
> Result is all right.
> I want to judge automatically
> if max pixel value is 1 or 255.
> Is there any easy way to check
> or get  pixel values ?
>
> Best regards,
>
> Oka
>
> > setShift(0)
> > setScale(255)
> >
> > 2012/3/23 oka <oka at bpe.es.osaka-u.ac.jp>
> >
> > > Dear Zukic,
> > >
> > > Thank you for your reply.
> > > I think shiftscale will shift the pixel value
> > > for example,  100 to 200 by SetShift(100).
> > > Greyscale image has 0 and 1 values
> > > and I want to change 1 to 255 remaining
> > > 0 unchanged.
> > > I am not sure how to treat such greyscale
> > > image file.
> > >
> > > Best regards,
> > >
> > > Oka
> > >
> > > > I guess you need to normalize image values then.
> > > > http://www.vtk.org/Wiki/VTK/Examples/Images/ImageShiftScale
> > > >
> > > > On Thu, Mar 22, 2012 at 11:57, oka <oka at bpe.es.osaka-u.ac.jp> wrote:
> > > >
> > > > > Dear vtk users,
> > > > >
> > > > > How can I read binary image format file ?
> > > > > I use MetaIO file, mhd and raw files.
> > > > > How can I describe mhd header for binary image format file
> > > > > (0-1 values only) ?  If 0 and 255 are used
> > > > > for unsigned char type, it is all right, but 0-1
> > > > > image shows a only black image.
> > > > >
> > > > > Best regards,
> > > > >
> > > > > Oka
> > > > > --
> > > > > oka <oka at bpe.es.osaka-u.ac.jp>
> > > > >
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> > > --
> > > oka <oka at bpe.es.osaka-u.ac.jp>
> > >
> > >
>
> --
> oka <oka at bpe.es.osaka-u.ac.jp>
>
>
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