Re: [APML] Gradient and Vignette removal software

["Mike Unsold" <mike@mlunsold.com>]

Hi Nicola

An erosion filter could be used to remove stars and leave the background
component but it may also alter the background to much. I was thing more
along the lines of a wavelet approach.

Mike

----- Original Message -----
From: "Nicola Montecchiari" <nmontec@libero.it>
To: <astro-photo@seds.org>
Sent: Thursday, June 27, 2002 7:38 AM
Subject: Re: [APML] Gradient and Vignette removal software


>
> Mike Unsold wrote:
> > Hi Chris
> >
> > Could you send me an image that has a gradient or vignetting that needs
> > removed. I would be interested in trying to remove the gradient. Other
> > tools exist for removing stars from images besides Gaussian blurs.
> > Gaussian blurs only spread star light out over several pixels and do not
> > remove star light.
>
>
> Yes, I'd believe that an erosion filter could be useful here...
>
> Nicola
>
>
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