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Re: Homogenity of an area [message #27681]

Mon, 05 November 2001 02:16

Martin Downing
Messages: 136
Registered: September 1998

Senior Member

Hi Moritz,

I guess it depend on *how* homogenous you want it to be. If you want *exact*
then

IF min(array) EQ max(array) THEN print, "homogenous"

where array is the values of the area pixels: e.g. image[indices],or
image[x0:x1,y0:y1]

Otherwise you could test if its variance, skewness etc were sufficiently low

IF variance(array) LT THRESHOLD THEN ........

martin

"Moritz von Schwedler" <mschwedler@gmx.de> wrote in message
news:9s5fo0$10rj0j$1@ID-112900.news.dfncis.de...
> Hello!
>
> How can I test wether an area is homgeneous or not? I am using IDL 5.2.
>
> thanks,
> Moritz
>
>

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