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Old 25-08-2015, 09:22 PM
konstantinos75
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konstantinos75 is offline
 
Join Date: Oct 2014
Location: Athens,Greece
Posts: 60
Hi

I have found these three methods which describe how to make a synthetic L in Pixinsight.

I need to experiment now.


synthetic luminance method 1
===============================

R frames stack -> master R frame
G frames stack -> master G frame
B frames stack -> master B frame

Align R,G,B frames

ImageIntegration tool
- Combination = Average
- Normalization = additive with scaling
- Weights = Noise evaluation
- Scale estimator = iterative k-sigma
- Generate integrated image = enabled
- Evaluate noise = enabled
- Pixel rejection = No rejection
- Clip low range = disabled
- Clip high range = disabled



synthetic luminance method 2
===============================

R frames stack -> master R frame
G frames stack -> master G frame
B frames stack -> master B frame

Align R,G,B frames

pixel math: master R+master G+master B



synthetic luminance method 3
=============================
synL1 = ImageIntegration( red1 green1 blue1 )
synL2 = ImageIntegration( red2 green2 blue2 )
...
synLn = ImageIntegration( red(n) green(n) blue(n) )

finalLuminance = WinsorizedSigmaClipping ( L1, L2...Ln, synL1, synL2..., synLn) // sigma =4, Normalization = scale zero offset

LRGB = LRGBCombinationTool ( finalLuminance/RGB) // L=0,5, Sat=0,38-4,5
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