Author Topic: How do I combine two master lights  (Read 21319 times)

Offline Jim_

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Re: How do I combine two master lights
« Reply #15 on: 2012 October 29 13:27:30 »

[/quote]
 if you want to apply any process at a 50% strength (or any strength) then you can just create an image with all pixel values = 0.5 and use that as a mask.
[/quote]

The mask part is no problem.
They're actually almost easier to make in PI than PS.

How would I create an image with varying pixel values?
I've got PI opened and been searching but can't find anyway to do it.

Offline pfile

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Re: How do I combine two master lights
« Reply #16 on: 2012 October 29 13:39:54 »
if your image is mono, jut clone it by dragging the top tab in the view to the desktop, then stretch and smooth it as i've described above.

if your image is color, extract the lightness (Image > Extract > Lightness ) or click the 5th icon over on the toolbar (kind of an RGB gradient with a small grey square overlaying the corner), then stretch/smooth.

there isn't really any way to 'paint' a mask in PI.

Offline Nocturnal

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Re: How do I combine two master lights
« Reply #17 on: 2012 October 29 13:56:55 »
Right, when I mask it's never to attennuate the process everywhere. It's always some mask to hide certain features. My saturation curve is almost always masked with a processed extracted L like Rob described. I generally don't worry about the wavelet smoothing but it's a good trick.
Best,

    Sander
---
Edge HD 1100
QHY-8 for imaging, IMG0H mono for guiding, video cameras for occulations
ASI224, QHY5L-IIc
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Offline Jim_

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Re: How do I combine two master lights
« Reply #18 on: 2012 October 29 14:00:38 »
pfile,

So you really can't set a percentage for the image then?
I understand about changing the mask with the histogram, but you mentioned being able to apply the process at 50% by creating an image with all pixel values = .5.
Is that done in pixel math?

Offline pfile

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Re: How do I combine two master lights
« Reply #19 on: 2012 October 29 16:09:03 »
right, if you create an image of the same dimensions as your target image, and set every pixel in that new image to 0.5, and then use the new image as a mask for the target image, you will apply any process to the image at 1/2 strength as long as the mask is applied and active.

i think it got lost upthread, but sander replied that if you go into pixelmath, set the RGB/K expression to simply "0.5" (but without quotes), then in the dropdown set the mode to "create new image" and "greyscale" and drag the triangle onto your image, it will create a new image with all pixels set to 0.5.


Offline Jim_

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Re: How do I combine two master lights
« Reply #20 on: 2012 October 29 18:03:24 »
hahahahahahaha

You're right...sorry sander I missed you're post.
I didn't know there was an extra drop down box in pixel math.
Very cool though.
I can't wait to play around with this later...

Thanks for putting up with a newbie   = ))

Jim

Offline pfile

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Re: How do I combine two master lights
« Reply #21 on: 2012 October 29 18:12:23 »
no problemo... here's a screenshot...


Offline Nocturnal

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Re: How do I combine two master lights
« Reply #22 on: 2012 October 29 18:23:18 »
No problem Jim, we're happy you're trying PI.
Best,

    Sander
---
Edge HD 1100
QHY-8 for imaging, IMG0H mono for guiding, video cameras for occulations
ASI224, QHY5L-IIc
HyperStar3
WO-M110ED+FR-III/TRF-2008
Takahashi EM-400
PIxInsight, DeepSkyStacker, PHD, Nebulosity

Offline Jim_

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Re: How do I combine two master lights
« Reply #23 on: 2012 October 30 13:37:39 »
I'm now a full fledged PI member.
I purchased it about a week ago   = ))

Offline Nocturnal

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Re: How do I combine two master lights
« Reply #24 on: 2012 October 30 14:41:43 »
Great!
Best,

    Sander
---
Edge HD 1100
QHY-8 for imaging, IMG0H mono for guiding, video cameras for occulations
ASI224, QHY5L-IIc
HyperStar3
WO-M110ED+FR-III/TRF-2008
Takahashi EM-400
PIxInsight, DeepSkyStacker, PHD, Nebulosity

Offline Juan Conejero

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Re: How do I combine two master lights
« Reply #25 on: 2012 November 06 06:57:24 »
Quote
...IMO lack of layering is a weakness of PI...

Don't take this as an official announcement, but see below... :)

Juan Conejero
PixInsight Development Team
http://pixinsight.com/

Offline Nocturnal

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Re: How do I combine two master lights
« Reply #26 on: 2012 November 06 07:04:55 »
And thus it begins....
Best,

    Sander
---
Edge HD 1100
QHY-8 for imaging, IMG0H mono for guiding, video cameras for occulations
ASI224, QHY5L-IIc
HyperStar3
WO-M110ED+FR-III/TRF-2008
Takahashi EM-400
PIxInsight, DeepSkyStacker, PHD, Nebulosity

Offline resonance

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Re: How do I combine two master lights
« Reply #27 on: 2012 November 06 07:23:14 »
Ok...now I want to see who will continue to say that photoshop is better ;)

Offline Nocturnal

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Re: How do I combine two master lights
« Reply #28 on: 2012 November 06 07:56:39 »
Ok...now I want to see who will continue to say that photoshop is better ;)

I've never really paid attention to that sentiment :-) PI was better when it came out of beta 6 years ago.
Best,

    Sander
---
Edge HD 1100
QHY-8 for imaging, IMG0H mono for guiding, video cameras for occulations
ASI224, QHY5L-IIc
HyperStar3
WO-M110ED+FR-III/TRF-2008
Takahashi EM-400
PIxInsight, DeepSkyStacker, PHD, Nebulosity

Offline Jim_

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Re: How do I combine two master lights
« Reply #29 on: 2012 November 06 09:33:19 »
Quote
...IMO lack of layering is a weakness of PI...

Don't take this as an official announcement, but see below... :)



SWEET!!!!!