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Re: Dynamic range in morphological operations [message #80416] Mon, 04 June 2012 09:21
Fraser Watson is currently offline  Fraser Watson
Messages: 3
Registered: June 2012
Junior Member
Thanks for the link ben. Setting the /UINT keyword did the trick. My dynamic range is well within the allowance of uint space.

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Re: Dynamic range in morphological operations [message #80417 is a reply to message #80416] Mon, 04 June 2012 08:14 Go to previous message
ben.bighair is currently offline  ben.bighair
Messages: 221
Registered: April 2007
Senior Member
On Monday, June 4, 2012 8:01:43 AM UTC-4, (unknown) wrote:
> I'm using MORPH_TOPHAT on a 2D image with a dynamic range of roughly 0-13000 and the IDL morphology functions seem to insist on a grayscale range (0-255). Is there any way around this as I am losing a lot of detail when reducing the dynamic range of my images.
>

Hi,

Does it help to set the PRESERVE_TYPE keyword listed here?

http://idlastro.gsfc.nasa.gov/idl_html_help/MORPH_TOPHAT.htm l

Cheers,
ben

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