[Insight-users] one problem of searching stars from sky

[Kishore Mosaliganti]

Hi Tao,

A connected components image filter connects all pixels that are
connected in the foreground and gives it a unique label. So, you end
up with a set of distinctly labeled foreground objects.

Look at itkConnectedComponentImageFilter.


Kishore

On Wed, Oct 28, 2009 at 1:56 PM, Tao Dai <uniquedai at gmail.com> wrote:
> Dear Luis and ITK list:
>
> I am working on one project and trying to do some work like "finding
> stars":  Assuming there're lots of stars (difference size/brightness) in the
> night sky, I wanna extract those stars and calculate areas and brightness
> for each.
>
> What I am doing first is a binary thresholding
> (itk:BinaryThresholdImageFilter) and it works well.  However, I don't know
> how to define a cluster of bright points which make a single star. I don't
> know if this make me clear. Let's try another way to clarify: how to know
> which points are from the same star? any examples available in ITK?
>
> Thanks for any input.
>
> Tao
>
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