[Author Prev][Author Next][Thread Prev][Thread Next][Author Index][Thread Index]

Re: [APML] Vignetting remove !

Hi Dom,

This is my try with PI's DBE (it surely could be improved):

The synthetic background:
http://pleiades-astrophoto.com/tmp/dcantin_apml/image000982_background.jpg

The final image after background subtraction, curves and histograms:
http://pleiades-astrophoto.com/tmp/dcantin_apml/image000982_pi.jpg

Your original image for comparison:
http://pleiades-astrophoto.com/tmp/dcantin_apml/image000982.jpg

The process icons:
http://pleiades-astrophoto.com/tmp/dcantin_apml/image000982.pi-psm

Obviously, the treetops line has not been properly modelized by DBE. This is
because the transition between the treetops and the sky is too abrupt. This
could be avoided with a mask, or by putting a lot of DBE samples covering
the treetops. However I like the bright halo surrounding the treetops; it
adds a touch of mystery :)

My try is far from optimal. The linearized division method of Carlos Milovic
would probably give better results. Better curves could also be defined.

Regards,

Juan

----- Original Message -----
From: Dominic Cantin
To: APML
Sent: Friday, April 08, 2005 10:58 PM
Subject: [APML] Vignetting remove !


Hi all !

I want to know if it's possible to remove the vignetting on my image here
http://www.spacew.com/gallery/image000982.html

I'm not an expert then if someone could help me , I can post a high
resolution on my site to let you try something.

I have Photoshop , Pixlnsight and Picture Window pro .. I tried but I can't
figure how to remove the vignetting here.

Let me know if you're interesed to give a try and give the "recipe"

Thanks for the help !



Dominic Cantin
http://astrosurf.com/aurores
http://spacew.com/gallery/DominicCantin
http://www.pbase.com/dominiccantin




Lèche-vitrine ou lèche-écran ? Yahoo! Magasinage.




_______________________________________________
Astro-Photo mailing list
Astro-Photo@seds.org
http://seds.org/mailman/listinfo/astro-photo


_______________________________________________
Astro-Photo mailing list
Astro-Photo@seds.org
http://seds.org/mailman/listinfo/astro-photo