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polygon filling - binary image [message #39809]

Wed, 23 June 2004 08:54

Francois
Messages: 8
Registered: May 2004

Junior Member

Hello,

I have a binary image with lines (255) and background (0).
I would like to fill areas closed by lines with a unique ID.
Hence obtaining an image with grey levels going from 1 to
number_of_polygons.

Do you have any hints about how to do this ?

Thank you,

Fran�ois L.

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Re: polygon filling - binary image [message #39906 is a reply to message #39809]

Fri, 25 June 2004 08:39

R.Bauer
Messages: 1424
Registered: November 1998

Senior Member

Francois wrote:

> Hello,
>
> I have a binary image with lines (255) and background (0).
> I would like to fill areas closed by lines with a unique ID.
> Hence obtaining an image with grey levels going from 1 to
> number_of_polygons.
>
> Do you have any hints about how to do this ?
>
> Thank you,
>
> Franï¿œois L.

Dear Franï¿œois

is it something like this what you are looking for?

img=dist(20)
contour,img,/fill,level=findgen(20)

Or is it more like the path_xy example described in the online help by
contour?

cheers
Reimar

--
Forschungszentrum Juelich
email: R.Bauer@fz-juelich.de
http://www.fz-juelich.de/icg/icg-i/
============================================================ ======
a IDL library at ForschungsZentrum Juelich
http://www.fz-juelich.de/icg/icg-i/idl_icglib/idl_lib_intro. html

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Re: polygon filling - binary image [message #39910 is a reply to message #39809]

Sat, 26 June 2004 11:35

Paul Sorenson
Messages: 48
Registered: May 2002

Member

result = label_region(bytscl(-image))

-Paul Sorenson
www.paulsorenson.com

"Francois" <leduc_francois@hotmail.com> wrote in message
news:1088006119.566831@news.drenet.dnd.ca...
> Hello,
>
> I have a binary image with lines (255) and background (0).
> I would like to fill areas closed by lines with a unique ID.
> Hence obtaining an image with grey levels going from 1 to
> number_of_polygons.
>
> Do you have any hints about how to do this ?
>
> Thank you,
>
> Fran�ois L.
>
>

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