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Synthesized color from Luminance

Started by fblue, 02/19/2008 01:46AM
Posted 02/19/2008 01:46AM | Edited 02/19/2008 01:50AM Opening Post
Hey, what do you think of this photo. I made color subs from luminance subs and combined them to get this.
Just playing around to see what could be done with just luminance. Always fun to play with data, but I have always wondered if it was possible to make a color shot when you did not have all the subs for it.

Attached Image:

fblue's attachment for post 40935

[SIZE="Large"][/SIZE][COLOR="Blue"][/COLOR] Floyd Blue grin
Amateur Imager
Posted 02/19/2008 02:23AM #1
You can synthesize Green from Red & Blue Channels, but nothing beats having REAL data...


Ivan Gastaldo 8)
Coconut Creek, FL

Ivan's Observatory
Lat 26N 16' 48" Long 80W 10' 48"
[COLOR="Red"]Personal Website:[/COLOR] http://www.ivangastaldo.com

CCD Imaging and Processing/Deep Sky - Moderator
I like to complain about everything - Moderator
Posted 02/19/2008 03:58PM #2
Hello Floyd,

it sure would be nice to know how you did it! It may be the only way I will ever get a color image without using my trusted OSC ST-2000 sad

Ciao Floyd

Luca

www.amun-ra.org
Solar Imaging Website
Posted 02/19/2008 04:33PM #3
Hi Floyd.
Yes, it is possible to create a "color" image just by creating red, green, and blue, frames from a luminance image and putting them together. But, I'm sure you realize that it is not a real color image of the object. For example, the image you posted could have a bright orange star and a bright blue star in the frame, but using this method they would both appear to be the exact same color. Every object in the image will have precisely the same color, which will be determined by the ratio at which you mix your RGB data.

I have enjoyed watching as your images get better and better. Keep up the good work!
Cheers,
Tyler

"The expression of the beautiful is in direct ratio to the power of perception acquired by the artist." (Gustave Courbet)