fiber diameter

[Paxton Provitera]

Hi all.

I am trying to determine fiber diameter from SEM images which have 100-200
fibers of differeing diameters in random orientations.
The perfect final output would be a list of diameters.

I have looked through the available plugins and have not seen anything that
jumps out as a solution, but before I begin writing a plugin I was hoping
someone might have a better suggestion.

Thanks for your help in advance.

-Paxton

[Gabriel Landini]

On Tuesday 29 May 2007 13:57:32 Paxton Provitera wrote:
> I am trying to determine fiber diameter from SEM images which have 100-200
> fibers of differeing diameters in random orientations.
> The perfect final output would be a list of diameters.

If you could binarise the images, you could do a distance transform of the
fibre and keep the brightest grey value as the width.

Regards,

G.

[Paxton Provitera]

That sounds great, but how do you binarise an image and how do you do a
distance transform?

Sorry about my lack of knowledge in this area.

-Paxton


On 5/29/07, Gabriel Landini <[hidden email]> wrote:

>
> On Tuesday 29 May 2007 13:57:32 Paxton Provitera wrote:
> > I am trying to determine fiber diameter from SEM images which have
> 100-200
> > fibers of differeing diameters in random orientations.
> > The perfect final output would be a list of diameters.
>
> If you could binarise the images, you could do a distance transform of the
> fibre and keep the brightest grey value as the width.
>
> Regards,
>
> G.
>

[Gabriel Landini]

On Tuesday 29 May 2007 15:07:54 Paxton Provitera wrote:
> That sounds great, but how do you binarise an image and how do you do a
> distance transform?

Image>Adjust>Threshold

Process>Binary>Distance Map

Please  read the documentation pages.

G.