Author Topic: New Tool: LinearFit  (Read 16357 times)

Offline Carlos Milovic

  • PTeam Member
  • PixInsight Jedi Master
  • ******
  • Posts: 2172
  • Join the dark side... we have cookies
    • http://www.astrophoto.cl
Re: New Tool: LinearFit
« Reply #15 on: 2010 September 13 08:09:33 »
Sander, not always, but usually it works better with stretched images.
Regards,

Carlos Milovic F.
--------------------------------
PixInsight Project Developer
http://www.pixinsight.com

Offline Jordi Gallego

  • PixInsight Addict
  • ***
  • Posts: 279
Re: New Tool: LinearFit
« Reply #16 on: 2010 September 15 11:09:39 »
Very interesting tool Juan ;)
Jordi Gallego
www.astrophoto.es

Offline Niall Saunders

  • PTeam Member
  • PixInsight Jedi Knight
  • *****
  • Posts: 1456
  • We have cookies? Where ?
Re: New Tool: LinearFit
« Reply #17 on: 2010 September 22 17:16:27 »
Quote
I thought HDRWT should only be applied on non-linear images, right?

A fair comment - but I think that the point being made was that application of HDWRT to a linear image will result in a non-linear image.

As Carlos says, if you get the image out of the 'confines' of its original linear space first, HDWRT has more 'meat' to work its magic on.
Cheers,
Niall Saunders
Clinterty Observatories
Aberdeen, UK

Altair Astro GSO 10" f/8 Ritchey Chrétien CF OTA on EQ8 mount with homebrew 3D Balance and Pier
Moonfish ED80 APO & Celestron Omni XLT 120
QHY10 CCD & QHY5L-II Colour
9mm TS-OAG and Meade DSI-IIC

Offline Carlos Milovic

  • PTeam Member
  • PixInsight Jedi Master
  • ******
  • Posts: 2172
  • Join the dark side... we have cookies
    • http://www.astrophoto.cl
Re: New Tool: LinearFit
« Reply #18 on: 2010 September 22 17:38:15 »
Yes, but it will still be linear locally. This means, some processes like Deconvolutions still have some meaning with HDRWT applied to raw/linear data. I think Juan made an example of this some time ago.
Regards,

Carlos Milovic F.
--------------------------------
PixInsight Project Developer
http://www.pixinsight.com

Offline José Manuel Pérez Redondo

  • Newcomer
  • Posts: 18
Re: New Tool: LinearFit
« Reply #19 on: 2010 December 10 11:47:28 »
Joan, Vicent and the other pi-workers:

Thanks for this fantastic HDRcomposition. I didn't see at September but I work with it today. Fantastic progres for my images!!

Thanks

José Manuel Pérez Redondo