Author Topic: Image processing order.  (Read 3473 times)

Offline Corries

  • Newcomer
  • Posts: 38
Image processing order.
« on: 2014 April 11 21:23:40 »
I'm very new to PixInsight.  With respect to the following processes:

  Alignment and Integration
  Image Calibration
  RGB Channel Combination
  DBE, Colour Calibration
  Histogram Transformation
  LRBG Combination

What would be the best order to do these processes?

Many thanks.

Offline Geoff

  • PixInsight Padawan
  • ****
  • Posts: 908
Re: Image processing order.
« Reply #1 on: 2014 April 11 22:42:48 »
1 Calibration
2 Alignment and integration
3 RGB combo
3 DBE on L and RGB
4 Colour calibration on RGB
5 Histogram stretch on L and RGB
6 LRGB combine
Geoff
Don't panic! (Douglas Adams)
Astrobin page at http://www.astrobin.com/users/Geoff/
Webpage (under construction) http://geoffsastro.smugmug.com/

Offline Corries

  • Newcomer
  • Posts: 38
Re: Image processing order.
« Reply #2 on: 2014 April 11 23:01:06 »
Thanks Geoff,

That's a great help.

T

Offline Josh Lake

  • PixInsight Old Hand
  • ****
  • Posts: 424
Re: Image processing order.
« Reply #3 on: 2014 April 14 17:20:43 »
Yeah, some people DBE their R, G, and B channels separately, but as it was pointed out to me, the RGB data really comprise one image, not three, and DBE handles the multicolor gradients gracefully.

Offline pfile

  • PTeam Member
  • PixInsight Jedi Grand Master
  • ********
  • Posts: 4729
Re: Image processing order.
« Reply #4 on: 2014 April 15 12:12:44 »
josh it's true but the DBE sample parameters may not be "one-size fits all" enough if the gradient brightness in the channels differ too much. that's the reason to do it separately.

rob

Offline Josh Lake

  • PixInsight Old Hand
  • ****
  • Posts: 424
Re: Image processing order.
« Reply #5 on: 2014 April 15 13:54:44 »
Good point, good point.

Offline niteman1946

  • PixInsight Addict
  • ***
  • Posts: 234
Re: Image processing order.
« Reply #6 on: 2014 April 15 17:22:50 »
Rob and Josh,

I too find that doing a DBE to each channel prior to combining works better for me.

Mark