[Insight-users] Rescale label image

Dženan Zukić dzenanz at gmail.com
Tue Jun 12 15:06:37 EDT 2012


Of course, when I get back to University tomorrow. Here, it's 9pm :D

On Tue, Jun 12, 2012 at 9:05 PM, Bill Lorensen <bill.lorensen at gmail.com>wrote:

> Just try it
>
> On Tue, Jun 12, 2012 at 3:04 PM, Dženan Zukić <dzenanz at gmail.com> wrote:
> > I have also read that documentation, and looked at the methods of the
> class
> > in docs. However, I could not find anything which deals with sorting.
> >
> > On Tue, Jun 12, 2012 at 6:14 PM, Bill Lorensen <bill.lorensen at gmail.com>
> > wrote:
> >>
> >> /**
> >>  * \class RelabelComponentImageFilter
> >>  * \brief Relabel the components in an image such that consecutive
> >> labels are used.
> >>  *
> >>  * RelabelComponentImageFilter remaps the labels associated with the
> >>  * objects in an image (as from the output of
> >>  * ConnectedComponentImageFilter) such that the label numbers are
> >>  * consecutive with no gaps between the label numbers used.  By
> >>  * default, the relabeling will also sort the labels based on the size
> >>  * of the object: the largest object will have label #1, the second
> >>  * largest will have label #2, etc.
> >>  *
> >>  * Label #0 is assumed to be background is left unaltered by the
> >>  * relabeling.
> >> */
> >>
> >> On Tue, Jun 12, 2012 at 11:43 AM, Dženan Zukić <dzenanz at gmail.com>
> wrote:
> >> > I have an image containing labeled objects. The number of objects is
> >> > about
> >> > 10. However object labels are not consecutive (1,2,3...) as I would
> like
> >> > them to be, but are scaled to 255.
> >> >
> >> > In case of 2 objects, labels would be 0(background), 127, 255.
> >> >
> >> > However ShiftScaleImageFilter does not seem a safe way to switch back.
> >> > There
> >> > is  ChangeLabelImageFilter, but it sorts the labels by object size. Is
> >> > there
> >> > a parameter to make this filter not sort labels? If not, what is the
> >> > easiest
> >> > way to accomplish this?
> >> >
> >> >
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> >> --
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> >
> >
>
>
>
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